An antenna according to an embodiment comprises: a reflector, a transceiver disposed at one side of the reflector; and a support disposed at the other side of the reflector and serving to position the reflector apart from an installation position, wherein the reflector comprises: a reflective layer which reflects electromagnetic waves; a heating layer which is disposed on the lower surface of the reflective layer and generates heat for transfer to the top of the reflective layer; and a heat insulation layer which is disposed on the lower surface of the heating layer and serves to prevent heat generated in the heating layer from being transferred below the heating layer.
H01Q 15/16 - Reflecting surfacesEquivalent structures curved in two dimensions, e.g. paraboloidal
H01Q 1/02 - Arrangements for de-icingArrangements for drying-out
H01Q 19/10 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
2.
MULTIBAND DIPLEXER AND BROADBAND ANTENNA COMPRISING SAME
A multiband diplexer for an antenna to separate a multiband wireless signal includes a first signal passing unit connected to a side of a single feed horn of the antenna and configured to pass a first band signal and a second signal passing unit positioned coaxially with the first signal passing unit and configured to pass a second band signal, and the multiband diplexer is configured to separate the first band signal and the second band signal from a signal received by the single feed horn, in which at least one of the first signal passing unit and the second signal passing unit is configured to suppress a higher order mode.
A septum polarizer according to one embodiment can comprise a waveguide body and a stair-shaped septum, which is arranged in the longitudinal direction inside the waveguide body and divides the waveguide body into two parts, and has stepped parts of different heights so that a higher order mode can be reduced in a preset frequency band. In addition, a septum polarizer according to one embodiment can comprise: a waveguide body having a polygonal cross-section; a stair-shaped septum, which is arranged in the longitudinal direction inside the waveguide body and divides the waveguide body into two parts; and a pleated part arranged on the outer surface of the waveguide body, and
A coaxial polarizer and a multiband antenna comprising same are disclosed. The multiband antenna comprises: a first waveguide; a second waveguide which shares the same axis with the first waveguide and has a greater diameter than the first waveguide; a coaxial polarizer which is provided between the first and second waveguides; a feed horn which is provided at one side of the first and second waveguides; and a reflector which is provided at the other side of the first and second waveguides, wherein the polarizer comprises at least one polarizer fixed to each of the first and second waveguides.
H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
A posture control device for a satellite antenna and an operation method thereof are disclosed. The posture control device for a satellite antenna, according to an embodiment, may comprise: a memory which includes instructions; and a processor which is electrically connected to the memory and executes the instructions, wherein, when the instructions are executed by the processor, the processor performs a plurality of operations comprising: an operation of acquiring first coordinates of a satellite antenna for satellite communication; an operation of calculating a first matrix associated with tilts of the satellite antenna according to environments in which the satellite antenna is installed; and an operation of acquiring second coordinates of the satellite antenna by using the first coordinates and the first matrix.
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 1/28 - Adaptation for use in or on aircraft, missiles, satellites, or balloons
G01S 3/38 - Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
6.
RADOME FOR PREVENTING DEW CONDENSATION AND ICE FORMATION
A radome for preventing dew condensation and ice formation may comprise: a base which includes a flat bottom surface and on which an antenna is disposed; a dome which is open at the bottom thereof and corresponds to the edge of the base so as to cover the antenna; a rotating element which is fixed to the base and rotates about an axis perpendicular to the bottom surface of the base; and an engagement element which is formed to surround at least a part of the inner wall of the dome and comes into contact with the rotating element so as to receive rotating power transmitted therefrom.
H01Q 1/02 - Arrangements for de-icingArrangements for drying-out
H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome
F16H 19/04 - Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary motion and reciprocating motion comprising a rack
Disclosed is a feedhorn. The feedhorn provided in a multi-band antenna using a coaxial waveguide comprises: the coaxial waveguide including a first waveguide that is provided on one side of a reflector and allows a first band signal to pass therethrough and a second waveguide that shares the same axis with the first waveguide, has a larger diameter than the first waveguide, and allows a second band signal to pass therethrough; and a dielectric that is provided between the coaxial waveguide and a sub-reflector on one side of the coaxial waveguide and protrudes radially with respect to the axis of the coaxial waveguide.
A satellite communication device and a method therefor are disclosed. The satellite communication device includes a first processor that generates schedule data about a satellite communication asset, a second processor that is located on a mobile vehicle spaced apart from the first processor and generates a control signal based on the schedule data, and a mediator that dynamically switches a link between at least one antenna and at least one modem based on the control signal.
H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
H04B 7/08 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
A satellite communication device and a method therefor are disclosed. The satellite communication device includes a first processor that generates schedule data about a satellite communication asset, a second processor that is located on a mobile vehicle spaced apart from the first processor and generates a control signal based on the schedule data, and a mediator that dynamically switches a link between at least one antenna and at least one modem based on the control signal.
H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
H04B 7/08 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
A satellite communication device and a method therefor are disclosed. The satellite communication device includes a first processor that generates schedule data about a satellite communication asset, a second processor that is located on a mobile vehicle spaced apart from the first processor and generates a control signal based on the schedule data, and a mediator that dynamically switches a link between at least one antenna and at least one modem based on the control signal.
H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
H04B 7/08 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
An antenna according to an embodiment comprises: a reflector; a transceiver disposed at one side of the reflector; and a support disposed at the other side of the reflector and serving to position the reflector apart from an installation position, wherein the reflector comprises: a reflective layer which reflects electromagnetic waves; a heating layer which is disposed on the lower surface of the reflective layer and generates heat for transfer to the top of the reflective layer; and a heat insulation layer which is disposed on the lower surface of the heating layer and serves to prevent heat generated in the heating layer from being transferred below the heating layer.
A multiband diplexer for an antenna for separating a multiband radio signal, according to an embodiment, may comprise: a first signal passing unit connected to one side of a single feed horn of the antenna and passing a first band signal; and a second signal passing unit arranged coaxially with the first signal passing unit and passing a second band signal, wherein the first band signal and the second band signal may be separated from a signal received by the feed horn, and at least one of the first signal passing unit and the second signal passing unit may be configured to suppress a higher-order mode.
Testing apparatuses, and methods for using such apparatuses to calibrate and test an antenna, include a chamber that includes a lining, the lining being made from a material that is absorptive to radiation at a test wavelength. An adjustable platform is positioned at a first side of the chamber, the adjustable platform being rotatable to change an orientation of a device under test. A probe is positioned at a second side of the chamber, opposite to the first side of the chamber, that measures electromagnetic radiation from the device under test. A vector network analyzer communicates with the device under test and the probe to determine calibration information for the device under test.
H01Q 3/26 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture
A communication system according to one embodiment comprises: a communication device including a tracking unit which rotates with respect to a first axis, a second axis, and a third axis that are orthogonal to each other and which performs radio-wave communication with a moving object moving within the field of view; and a controller for controlling the communication device so that the tracking unit rotates with respect to the first axis and the second axis in the range of a first trajectory angle of the moving body and rotates with respect to the second axis and the third axis in the range of a second trajectory angle of the moving object.
H01Q 3/02 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
G01S 19/01 - Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
H01Q 1/34 - Adaptation for use in or on ships, submarines, buoys or torpedoes
H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 3/10 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation to produce a conical or spiral scan
15.
WIDEBAND SEPTUM POLARIZER FOR REDUCING HIGHER ORDER MODE
A septum polarizer according to one embodiment can comprise a waveguide body and a stair-shaped septum, which is arranged in the longitudinal direction inside the waveguide body and divides the waveguide body into two parts, and has stepped parts of different heights so that a higher order mode can be reduced in a preset frequency band. In addition, a septum polarizer according to one embodiment can comprise: a waveguide body having a polygonal cross-section; a stair-shaped septum, which is arranged in the longitudinal direction inside the waveguide body and divides the waveguide body into two parts; and a pleated part arranged on the outer surface of the waveguide body, and thus a higher order mode can be reduced in a preset frequency band.
A pedestal includes a supporter having an azimuth axis and a pivot on the azimuth axis, and a tracker connected to the pivot and configured to track an object within a field of view, wherein the azimuth axis is tilted with respect to a reference plane on which the supporter is installed in a direction away from a zenith line joining the pivot with a zenith within the field of view, and a tilt angle between the azimuth axis and the reference plane is set to correspond to an orbital angle of the object.
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
A satellite communication device and a method therefor are disclosed. The satellite communication device includes a first processor that generates schedule data about a satellite communication asset, a second processor that is located on a mobile vehicle spaced apart from the first processor and generates a control signal based on the schedule data, and a mediator that dynamically switches a link between at least one antenna and at least one modem based on the control signal.
H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
H04B 7/08 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
09 - Scientific and electric apparatus and instruments
Goods & Services
Satellite aerials for ships; software to control satellite aerials for ships, recorded; RF Switch Mediator for ships; marine navigation apparatus; communications transmission apparatus for ships
19.
SATELLITE COMMUNICATION METHOD AND DEVICE FOR ORCHESTRATING SATELLITE COMMUNICATION ASSETS
A satellite communication method and device are disclosed. A satellite communication device according to one embodiment comprises: a first processor for generating schedule data related to satellite communication assets; a second processor which is positioned on a moving object spaced apart from the first processor, and which generates a control signal on the basis of the schedule data; and a mediator for dynamically switching a link between at least one antenna and at least one modem on the basis of the control signal.
A satellite communication device and a method therefor are disclosed. The satellite communication device includes a first processor that generates schedule data about a satellite communication asset, a second processor that is located on a mobile vehicle spaced apart from the first processor and generates a control signal based on the schedule data, and a mediator that dynamically switches a link between at least one antenna and at least one modem based on the control signal.
H04B 7/04 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
H04B 7/08 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
A communication system according to one embodiment comprises: a communication device including a tracking unit which rotates with respect to a first axis, a second axis, and a third axis that are orthogonal to each other and which performs radio-wave communication with a moving object moving within the field of view; and a controller for controlling the communication device so that the tracking unit rotates with respect to the first axis and the second axis in the range of a first trajectory angle of the moving body and rotates with respect to the second axis and the third axis in the range of a second trajectory angle of the moving object.
H01Q 3/02 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
G01S 19/01 - Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
An antenna control method and apparatus are disclosed. The antenna control method according to an embodiment comprises the steps of: determining the azimuth angle of an antenna on the basis of orbital force information of a satellite; determining an elevation angle and a cross level of the antenna on the basis of the azimuth angle; and controlling the antenna on the basis of the elevation angle and the cross level.
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 1/22 - SupportsMounting means by structural association with other equipment or articles
Disclosed is an antenna control method and apparatus. The antenna control method includes determining an azimuth angle of an antenna based on ephemeris information of a satellite, determining an elevation angle and a cross level of the antenna based on the azimuth angle and controlling the antenna based on the azimuth angle, the elevation angle, and the cross level.
H01Q 3/02 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
G01S 3/42 - Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal the desired condition being maintained automatically
A band changer according to an embodiment comprises: a rotor having a rotary shaft; and a plurality of transceivers spaced apart from the rotary shaft, mounted to the rotor in the circumferential direction of the rotor, and configured to transmit/receive radio waves having different bands.
A band changer includes a rotor having a rotation axis, and a plurality of transceivers disposed separately from the rotation axis and provided in the rotor along a circumferential direction of the rotor, and configured to transmit and receive waves respectively having different frequency bands.
H01Q 3/06 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation over a restricted angle
H01Q 3/14 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying the relative position of primary active element and a refracting or diffracting device
H01Q 5/45 - Imbricated or interleaved structuresCombined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device
H01Q 19/17 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
A pedestal according to one embodiment comprises: an azimuth axis; a support unit having a pivot on the azimuth axis; and a tracking unit which is connected to the pivot and which tracks an object within view, wherein the azimuth axis is tilted with respect to a reference plane, at which the support unit is provided, in the direction away from a ceiling line, which connects the pivot and a ceiling within view, and a tilt angle, which is formed between the azimuth axis and the reference plane, is set to correspond to the orbital angle of the object.
H01Q 1/18 - Means for stabilising antennas on an unstable platform
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
29.
Method for upgrading a satellite antenna assembly and an associated upgradable satellite antenna assembly
A method for upgrading a dual-band antenna assembly to a tri-band antenna assembly is provided. The dual-band antenna assembly includes a main reflector, and first and second antenna feeds arranged in a coaxial relationship and directed toward the main reflector. The first and second antenna feeds are for first and second frequency bands, respectively. The method includes positioning a third antenna feed through a medial opening in a center of the main reflector, with the third antenna feed directed towards the first and second antenna feeds. The third antenna feed is for a third frequency band. A subreflector is positioned between the main reflector and the first and second antenna feeds. The subreflector includes a frequency selective surface (FSS) material that is reflective for the third frequency band and transmissive for both the first and second frequency bands.
H01Q 5/20 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
H01Q 19/19 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
H01Q 1/34 - Adaptation for use in or on ships, submarines, buoys or torpedoes
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 5/00 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
H01Q 19/13 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
H01Q 21/28 - Combinations of substantially independent non-interacting antenna units or systems
H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
Provided is an antenna for satellite communication capable of receiving multi-band signals. The antenna includes: a main reflector; a first feed horn which is provided on the main reflector and receives a signal of a first band; a first reflector which is disposed to be spaced apart from a reflective surface of the main reflector at a predetermined interval and transmits the signal of the first band to the first feed horn; a second feed horn which is provided on the main reflector and receives a signal of a second band; and a second reflector which is disposed to be spaced apart from the reflective surface of the main reflector at a predetermined interval and transmits the signal of the second band to the second feed horn.
H01Q 3/12 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
H01Q 19/13 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
H01Q 19/08 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens for modifying the radiation pattern of a radiating horn in which it is located
H01Q 19/19 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
Disclosed is a pedestal apparatus having an antenna attached thereto capable of biaxial motion. The pedestal apparatus according to one embodiment may comprise: a body; a first drive unit, arranged on the lower part of the body, for transmitting driving power; a second drive unit, arranged on the lower part of the body, for transmitting driving power; a first drive gear arranged on the upper part of the body and receiving driving power from the first drive unit; a second drive gear arranged on the upper part of the body opposite the first drive gear, and receiving driving power from the second drive unit; and a driven gear which rotates by receiving driving power from the first and second drive gears, and to which an antenna is connected, wherein the antenna can move biaxially in accordance with the rotational directions of the first and second drive gears.
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 1/27 - Adaptation for use in or on movable bodies
H01Q 1/28 - Adaptation for use in or on aircraft, missiles, satellites, or balloons
33.
Antenna for satellite communication having structure for switching multiple band signals
The present invention discloses an antenna for satellite communication having a structure for switching multiband signals. The antenna for satellite communication according to an embodiment of the present invention includes a main reflecting plate configured to be rotatable in a predetermined direction so as to be oriented in a direction in which a satellite is located, a first feed horn configured to be detachably installed in a region of an edge of the main reflecting plate, a sub-reflecting plate configured to be installed so as to be spaced apart from a reflecting surface of the main reflecting plate by a predetermined distance by at least one support means provided in a region of the main reflecting plate, and a second feed horn configured to be detachably installed on a side opposite to the reflecting surface of the sub-reflecting plate, wherein an installation position of the sub-reflecting plate is changeable.
H01Q 19/19 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
H01Q 3/18 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is movable and the reflecting device is fixed
H01Q 3/20 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is fixed and the reflecting device is movable
H01Q 19/13 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
H01Q 15/16 - Reflecting surfacesEquivalent structures curved in two dimensions, e.g. paraboloidal
H01Q 3/02 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
H01Q 5/45 - Imbricated or interleaved structuresCombined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device
34.
Method for upgrading a satellite antenna assembly and an associated upgradable satellite antenna assembly
A method for upgrading a dual-band antenna assembly to a tri-band antenna assembly is provided. The dual-band antenna assembly includes a main reflector, and first and second antenna feeds arranged in a coaxial relationship and directed toward the main reflector. The first and second antenna feeds are for first and second frequency bands, respectively. The method includes positioning a third antenna feed through a medial opening in a center of the main reflector, with the third antenna feed directed towards the first and second antenna feeds. The third antenna feed is for a third frequency band. A subreflector is positioned between the main reflector and the first and second antenna feeds. The subreflector includes a frequency selective surface (FSS) material that is reflective for the third frequency band and transmissive for both the first and second frequency bands.
H01Q 5/20 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
H01Q 19/19 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
H01Q 1/34 - Adaptation for use in or on ships, submarines, buoys or torpedoes
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 5/00 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
H01Q 19/13 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
H01Q 21/28 - Combinations of substantially independent non-interacting antenna units or systems
H01Q 13/08 - Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
35.
HYBRID-TYPE PEDESTAL DEVICE CAPABLE OF ADJUSTING SATELLITE LOOK ANGLE BOTH AUTOMATICALLY AND MANUALLY AND PORTABLE SATELLITE COMMUNICATION ANTENNA COMPRISING SAME
The present invention relates to a hybrid-type pedestal device capable of adjusting the satellite look angle both automatically and manually, and a portable satellite communication antenna comprising the same. A hybrid-type pedestal device capable of adjusting the satellite look angle both automatically and manually according to the present invention may comprise: a driving motor; a worm reducer, one side of which is coupled to the driving motor, and which has a rotating shaft for manual manipulation formed on the other side thereof; a first reducing portion which interworks with the output rotating shaft of the worm reducer and transfers a rotational torque in the forward direction; a second reducing portion which transfers the rotational torque transferred from the first reducing portion in the backward direction; an output shaft fixedly coupled to the second reducing portion so as to output the rotational torque; and a coupling portion formed on an end of the output shaft and coupled to a rotating member for adjusting the look angle. Accordingly, the present invention advantageously provides a hybrid-type pedestal device capable of adjusting the satellite look angle both automatically and manually, and a portable satellite communication antenna comprising the same, wherein a worm reducer having a rotating shaft for manual manipulation formed thereon and a driving motor are coupled so as to form the driving portion of the pedestal device that constitutes the satellite communication antenna such that not only the satellite look angle of the satellite communication antenna can be manipulated simultaneously automatically and manually, the rotational torque and accuracy can also be improved during manual manipulation.
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
36.
FOLDABLE ANTENNA STAND AND PORTABLE SATELLITE COMMUNICATION ANTENNA INCLUDING SAME
The present invention relates to a foldable antenna stand and a portable satellite communication antenna including the same. The foldable antenna stand according to the present invention supports a mobile satellite communication antenna including a reflector and a pedestal housing for adjusting the look angle of the reflector toward a satellite. The foldable antenna stand may comprise: a circular base; base extension parts extending from a plurality of particular points facing each other on the upper surface of the circular base to a length long enough to receive the pedestal housing; and a plurality of foldable leg members fixed and coupled to the circular base in such a manner that the leg members can be folded perpendicularly to the lower portion of the circular base, so as to switch from a folded state to an unfolded state or vice versa. Therefore, the present invention has an effect of providing a foldable antenna stand and a portable satellite communication antenna including the same, wherein the foldable antenna stand uses a spring-embedded index plunger and the foldable leg members and thus can reduce the installation time, can increase support loads, and can simplify a component structure, thereby enhancing productivity.
Disclosed is a pedestal apparatus having an antenna attached thereto capable of biaxial motion. The pedestal apparatus according to one embodiment may comprise: a body; a first drive unit, arranged on the lower part of the body, for transmitting driving power; a second drive unit, arranged on the lower part of the body, for transmitting driving power; a first drive gear arranged on the upper part of the body and receiving driving power from the first drive unit; a second drive gear arranged on the upper part of the body opposite the first drive gear, and receiving driving power from the second drive unit; and a driven gear which rotates by receiving driving power from the first and second drive gears, and to which an antenna is connected, wherein the antenna can move biaxially in accordance with the rotational directions of the first and second drive gears.
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 1/27 - Adaptation for use in or on movable bodies
Disclosed is a pedestal apparatus having a low center of rotation. The pedestal apparatus according to one embodiment may comprise: a supporting part disposed on one side of a mobile body; a first link connected to the supporting body by a first joint, and rotatable with respect to the rotational axis of the first joint; a second link connected to the first link by a second joint, rotatable with respect to the rotational axis of the second joint, and having an antenna rotatably attached at one end by a third joint; and a drive unit for controlling the angle between the first link and second link by rotating the second joint, wherein, while the antenna is rotating with respect to the third joint, the third joint can be moved along an axis extending from the first joint.
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 1/28 - Adaptation for use in or on aircraft, missiles, satellites, or balloons
H01Q 1/32 - Adaptation for use in or on road or rail vehicles
H01Q 1/34 - Adaptation for use in or on ships, submarines, buoys or torpedoes
The present invention may comprise: a main reflection plate; a first feed horn which is disposed on the main reflection plate and receives a signal of a first band; a first reflection plate which is disposed to be spaced apart from a reflective surface of the main reflection plate by a predetermined distance and transmits the signal of the first band with the first feed horn; a second feed horn which is disposed on the main reflection plate and receives a signal of a second band; a second reflection plate which is disposed to be spaced apart from the reflective surface of the main reflection plate by a predetermined distance and transmits the signal of the second band to the second feed horn; and a third feed horn which is disposed to be spaced apart from the reflective surface of the main reflection plate by a predetermined distance and receives a signal of a third band.
H01Q 19/18 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
H01Q 5/25 - Ultra-wideband [UWB] systems, e.g. multiple resonance systemsPulse systems
H01Q 19/19 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
An antenna apparatus for satellite communication according to an embodiment of the present invention comprises a helical antenna comprising: a conical supporting part; and a helical winding part wound around an outer surface of the conical supporting part. The apparatus can improve antenna gain.
There is provided a satellite antenna including: a reflector which is directed in a direction toward a target satellite and receives a predetermined satellite signal; and a balance weight module which is mounted on a rear surface of the reflector, in which the balance weight module includes a guide movable balance weight, a guide which defines a movement route along which the guide movable balance weight is moved in a state in which the guide movable balance weight is coupled to the guide, and a fixing member which selectively couples the guide movable balance weight at one side of the guide. By using the satellite antenna according to the present invention, it is possible to easily and quickly perform an operation of adjusting weight balance of the reflector and to prevent a safety accident.
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 1/28 - Adaptation for use in or on aircraft, missiles, satellites, or balloons
H01Q 1/32 - Adaptation for use in or on road or rail vehicles
H01Q 1/34 - Adaptation for use in or on ships, submarines, buoys or torpedoes
H01Q 19/10 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
A pedestal device for a satellite tracking antenna, according to the present invention, comprises: an azimuth pedestal mounted on a moving body, and rotating a reflection plate such that the azimuth of the reflection plate is adjusted; and cross-level pedestals, each of which have one end portion connected to the rear surface part of the reflection plate so as to rotate the reflection plate in the upward/downward direction or clockwise/counterclockwise direction, and another end portion connected to the azimuth pedestal, wherein the rotational center of the azimuth pedestal and all the rotational centers of the cross-level pedestals can cross each other. Therefore, the pedestal device for the satellite tracking antenna, according to one embodiment of the present invention, can improve the tracking speed of the satellite tracking antenna since the satellite tracking antenna can rotate according to the direction of a target satellite regardless of the movement of the moving body on which the satellite tracking antenna is loaded, and reduces the weight of the cross-level pedestals taking up the weight, thereby enabling the durability of the pedestal device for the satellite tracking antenna to be improved.
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
A system for sensing stepping motor step out, according to an embodiment of the present invention, comprises: a winding current detection unit for detecting a stator winding current signal of a stepping motor; a voltage conversion unit for converting the current signal, which has been detected by means of the winding current detection unit, into a voltage signal; a differential amplification unit for amplifying the size of the voltage signal which has been converted by means of the voltage conversion unit; a differentiation unit for differentiating the voltage signal which has been amplified by means of the differential amplification unit; and a comparison unit for comparing the voltage signal, which is from the differentiation unit, to a reference voltage of the differential amplification unit, thereby determining whether or not a step out has occurred, wherein the differentiation unit can convert a sine wave voltage signal, which is from the differential amplification unit, into a square wave voltage signal, and the comparison unit can sense a change in pulse intervals or a change in frequencies of the square wave voltage signal.
An antenna assembly includes a main reflector, and a subreflector spaced from the main reflector. The subreflector includes a frequency selective surface (FSS) material that is transmissive for a first frequency band and reflective for both a second frequency band and a third frequency band. A first antenna feed is adjacent the subreflector and is directed toward the main reflector. The first antenna feed is for the first frequency band. Second and third antenna feeds are arranged in a coaxial relationship adjacent the main reflector and are directed toward the subreflector. The second and third antenna feeds are for the second and third frequency bands, respectively.
H01Q 19/19 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
H01Q 5/47 - Imbricated or interleaved structuresCombined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device with a coaxial arrangement of the feeds
H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome
H01Q 1/34 - Adaptation for use in or on ships, submarines, buoys or torpedoes
An antenna assembly includes a main reflector, and a subreflector spaced from the main reflector. The subreflector includes a frequency selective surface (FSS) material that is reflective for a first frequency band and transmissive for both a second frequency band and a third frequency band. A first antenna feed is adjacent the main reflector and is directed toward the subreflector. The first antenna feed is for the first frequency band. The second and third antenna feeds are arranged in a coaxial relationship and are directed toward the main reflector with the subreflector therebetween. The second and third antenna feeds are for the second and third frequencies, respectively.
H01Q 19/19 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
H01Q 5/47 - Imbricated or interleaved structuresCombined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device with a coaxial arrangement of the feeds
A satellite communications terminal for a ship may include an antenna with three antenna feeds operable at respective different frequencies, and communications circuitry coupled to the three antenna feeds and being configurable for a selected antenna feed. The terminal also includes a positioner to mount the antenna to the ship and point the antenna. A controller may select an antenna feed, configure the communications circuitry, and operate the positioner to point the antenna to a selected satellite all based upon the location of the ship and at least one selection rule. The selection rule may be a communications circuitry configuration rule and/or a service level agreement rule.
H01Q 1/34 - Adaptation for use in or on ships, submarines, buoys or torpedoes
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 5/00 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
H01Q 19/13 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
H01Q 19/19 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
H01Q 21/28 - Combinations of substantially independent non-interacting antenna units or systems
H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome
H01Q 3/02 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
H04B 1/00 - Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission
A method for upgrading a dual-band antenna assembly to a tri-band antenna assembly is provided. The dual-band antenna assembly includes a main reflector, and first and second antenna feeds arranged in a coaxial relationship and directed toward the main reflector. The first and second antenna feeds are for first and second frequency bands, respectively. The method includes positioning a third antenna feed through a medial opening in a center of the main reflector, with the third antenna feed directed towards the first and second antenna feeds. The third antenna feed is for a third frequency band. A subreflector is positioned between the main reflector and the first and second antenna feeds. The subreflector includes a frequency selective surface (FSS) material that is reflective for the third frequency band and transmissive for both the first and second frequency bands.
H01Q 5/20 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
H01Q 19/19 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
H01Q 1/34 - Adaptation for use in or on ships, submarines, buoys or torpedoes
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 5/00 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
H01Q 19/13 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
H01Q 21/28 - Combinations of substantially independent non-interacting antenna units or systems
A method for upgrading a dual-band antenna assembly to a tri-band antenna assembly is provided. The dual-band antenna system includes a main reflector, a strut assembly coupled to the main reflector defining an antenna feed receiving area spaced from the main reflector, and a subreflector carried by the strut assembly and also spaced from the main reflector. The subreflector includes a frequency selective surface (FSS) material that is reflective for both a first frequency band and a second frequency band and transmissive for a third frequency band. First and second antenna feeds are arranged in a coaxial relationship adjacent the main reflector and directed toward the subreflector. The first and second antenna feeds are for first and second frequency bands, respectively. The method includes positioning a third antenna feed at the antenna feed receiving area and directed towards the subreflector and the main reflector. The third antenna feed is for the third frequency band.
H01Q 19/19 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
H01Q 1/34 - Adaptation for use in or on ships, submarines, buoys or torpedoes
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 5/00 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
H01Q 19/13 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
H01Q 21/28 - Combinations of substantially independent non-interacting antenna units or systems
The present invention discloses an antenna for satellite communication having a structure for switching multiband signals. The antenna for satellite communication according to an embodiment of the present invention includes a main reflecting plate configured to be rotatable in a predetermined direction so as to be oriented in a direction in which a satellite is located, a first feed horn configured to be detachably installed in a region of an edge of the main reflecting plate, a sub-reflecting plate configured to be installed so as to be spaced apart from a reflecting surface of the main reflecting plate by a predetermined distance by at least one support means provided in a region of the main reflecting plate, and a second feed horn configured to be detachably installed on a side opposite to the reflecting surface of the sub-reflecting plate, wherein an installation position of the sub-reflecting plate is changeable.
H01Q 19/19 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
H01Q 3/02 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
H01Q 15/16 - Reflecting surfacesEquivalent structures curved in two dimensions, e.g. paraboloidal
H01Q 3/18 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is movable and the reflecting device is fixed
H01Q 3/20 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is fixed and the reflecting device is movable
H01Q 19/13 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
H01Q 5/45 - Imbricated or interleaved structuresCombined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device
A satellite antenna according to the present invention comprises: a reflective plate for receiving a predetermined satellite signal by being oriented toward the direction of a target satellite; and a balance weight module mounted on the rear side of the reflective plate, wherein the balance weight module comprises a guide-moved balance weight; a guide having a moving path formed therein so as to enable the guide-moved balance weight to be moved in a state of being coupled to the guide; and a fixing member for selectively binding the guide-moved balance weight to one side of the guide. The use of the satellite antenna according to the present invention results in advantages that the weight balance of a reflective plate can be easily and rapidly adjusted, and negligent accidents can be prevented.
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
An antenna for satellite communication includes; a signal transmitting and receiving unit for receiving or transmitting a signal from/to the satellite; a driving unit for rotating the signal transmitting and receiving unit so as to enable the signal transmitting and receiving unit to track the satellite; an anti-vibration unit provided inside the posts for elastically supporting the signal transmitting and receiving unit or the driving unit. Therefore, by providing the anti-vibration unit inside the posts, it is possible to increase availability for a circumferential space of the posts and to simplify the structure of the anti-vibration unit.
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 1/00 - Details of, or arrangements associated with, antennas
The present invention discloses an antenna for satellite communication having a structure for switching multiband signals. The antenna for satellite communication according to an embodiment of the present invention includes a main reflecting plate configured to be rotatable in a predetermined direction so as to be oriented in a direction in which a satellite is located, a first feed horn configured to be detachably installed in a region of an edge of the main reflecting plate, a sub-reflecting plate configured to be installed so as to be spaced apart from a reflecting surface of the main reflecting plate by a predetermined distance by at least one support means provided in a region of the main reflecting plate, and a second feed horn configured to be detachably installed on a side opposite to the reflecting surface of the sub-reflecting plate, wherein an installation position of the sub-reflecting plate is changeable.
H01Q 3/02 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
The antenna for satellite communication comprising a convertible module according to one embodiment of the present invention comprises: a reflector plate; a reflector plate flange arranged in the center of the rear surface of the reflector plate so as to rotate together with the reflector plate; a cross level arm rotatably connected to the reflector plate flange such that the elevation angle of the reflector plate varies; a main post, the top of which is connected to the center of the cross level arm such that the cross level arm is rotatable; and a convertible type electric wave processing module provided so as to be mounted on the reflector plate flange or separated from the reflector plate flange. The electric wave processing module may receive or transmit electric waves of frequency bands that are different from each other.
H01Q 3/02 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
The present invention relates to a satellite communication antenna. The present invention includes: a signal transceiving unit which receives a signal from a satellite or transmits a signal to a satellite; a driving unit which rotates the signal transceiving unit so that the signal transceiving unit tracks the satellite; a post which is provided in a vertical direction so as to support the driving unit; and an anti-vibration unit which is provided in the post so as to support the signal transceiving unit or the driving unit in an elastic manner. The anti-vibration unit is provided within the post so that the use of space in the periphery of the post can be improved and the configuration of the anti-vibration unit can be simplified.
According to one embodiment of the present invention, a satellite antenna housing comprises: a first layer; a second layer formed so as to be in contact with one side of the first layer; a third layer formed so as to be in contact with one side of the second layer and opposite the first layer; a fourth layer formed so as to be in contact with one side of the third layer and opposite the second layer; and a fifth layer formed so as to be in contact with one side of the fourth layer and opposite the third layer, wherein the first, third, and fifth layers have higher dielectric constants than the second and fourth layers, and the second and fourth layers may have greater thicknesses than the first, third, and fifth layers. The housing having said multilayer structure can receive or transmit a satellite radio signal with various bands and increase the strength of the housing while minimizing the transmission loss of radio waves depending on each band.
Provided is a satellite communication antenna, including a signal transmitting/receiving section for receiving signals from a satellite and transmitting the signals to the satellite; a driving section for rotating the signal transmitting/receiving section so that the signal transmitting/receiving section tracks the satellite; a main post, provided in a longitudinal direction, for supporting the driving section; and a vibration absorption section, provided to a circumference of the main post, for preventing vibrations or impacts from transferring into the signal transmitting/receiving section, thereby to attenuate vibrations or impacts acting on the signal transmitting/receiving section in up and down direction.
H01Q 3/02 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
H01Q 19/12 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
59.
Satellite VSAT antenna for transmitting/receiving multiple polarized waves
The present invention relates to a rotation apparatus of the polarizer for a multiple-polarized satellite signals and a satellite signal receiving apparatus included with the apparatus, includes a feedhorn for receiving satellite; a low noise block down converter for processing signals received by the feedhorn; and a skew compensation apparatus, included in the low noise block down converter or feedhorn, for rotating the low noise block down converter or feedhorn to compensate skew angles in the case that the satellite signals received in the feedhorn are the linearly polarized waves, the low noise block down converter includes the rotation apparatus of the polarizer for receiving linearly polarized signals and circularly polarized signals of the satellite signals, thereby to receive and process both of linearly polarized wave and circularly polarized wave by a simple structure.
H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
H01P 1/161 - Auxiliary devices for mode selection, e.g. mode suppression or mode promotionAuxiliary devices for mode conversion sustaining two independent orthogonal modes, e.g. orthomode transducer
H01P 1/165 - Auxiliary devices for rotating the plane of polarisation
H01Q 19/12 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
H01Q 19/195 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface wherein a reflecting surface acts also as a polarisation filter or a polarising device
60.
Polarizer rotating device for multi polarized satellite signal and satellite signal receiving apparatus having the same
There are provided a polarizer rotating device and a satellite signal receiving apparatus having the same. The satellite signal receiving apparatus includes a feedhorn that receives a satellite signal; a low noise block down converter that processes the signal received by the feedhorn; a skew compensating device that is provided at the low noise block down converter or the feedhorn and rotates the low noise block down converter or the feedhorn to compensate for a skew angle when the satellite signal received by the feedhorn is a linearly polarized wave; a polarizer that receives a linearly polarized signal and a circularly polarized signal of the satellite signal; and a polarizer rotating device that rotates the polarizer when the satellite signal received by the polarizer is a circularly polarized wave. In such a simple structure, the linearly polarized wave and the circularly polarized wave are all received to be processed.
H01Q 3/02 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
H01Q 3/08 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
H01Q 1/34 - Adaptation for use in or on ships, submarines, buoys or torpedoes
H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome
H01Q 19/19 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
The present invention relates to a low noise frequency converter capable of oscillating various frequencies according to the user's selection. The user selects at least one or more frequencies from among a plurality of frequencies. The low noise frequency converter receives a control signal from the user, and oscillates a frequency selected by the user according to the received control signal. The low noise frequency converter uses the oscillated frequencies for frequency conversion.
The present invention relates to a method for operating an optical relay system for an elevator. The optical relay system of the present invention comprises: an analog optical relay module for transceiving mobile communication signals over a communication network; a media server; a content processing module for transceiving content signals; a first muxing/demuxing processing unit for muxing the mobile communication signals and content signals as one optical signal; a passive element optical distributor for distributing the muxed optical signal to one or more units; a second muxing/demuxing processing unit for receiving the one or more distributed optical signals and demuxing same as the mobile communication signals and content signals; and a display device, located in the elevator, for displaying the demuxed content signals, wherein the display device comprises a patch antenna located in a bezel region, and the patch antenna transmits the demuxed mobile communication signals to a communication terminal.
The present invention relates to an antenna for satellite communication, comprising: a signal transceiver for receiving a signal from a satellite or transmitting a signal to a satellite; a driver for rotating the signal transceiver such that the signal transceiver can track the satellite; a vertically arranged main post for supporting the driver; and a vibration damper which is provided around the main post and prevents vibrations from being transferred to the signal transceiver, thereby attenuating vibrations or impacts that are vertically applied to the signal transceiver.
H01Q 19/195 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface wherein a reflecting surface acts also as a polarisation filter or a polarising device
The present invention relates to a polarizer rotating device for multiple polarized wave satellite signals, and to an apparatus for receiving satellite signals comprising the device. The apparatus for receiving satellite signals comprises: a feed horn for receiving a satellite signal; a low-noise block-down converter for processing the signal received by the feed horn; and a skew compensation device which is arranged in the low-noise block-down converter or in the feed horn, and which rotates the low-noise block-down converter or the feed horn to compensate for a skew angle when the satellite signal received by the feed horn is a linear polarized wave. The low-noise block-down converter includes a polarizer rotating device for receiving a linear polarized wave signal and a circular polarized wave signal among the satellite signals. The apparatus for receiving satellite signals of the present invention has a simple structure capable of receiving and processing both linear polarized waves and circular polarized waves.
H01Q 19/195 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface wherein a reflecting surface acts also as a polarisation filter or a polarising device
H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
65.
POLARIZER ROTATION APPARATUS FOR MULTI-POLARIZED SATELLITE SIGNALS AND SATELLITE SIGNAL RECEPTION APPARATUS HAVING SAME
The present invention relates to a polarizer rotation apparatus for multi-polarized satellite signals and a satellite signal reception apparatus having the same, including: a feed horn for receiving satellite signals; a low noise block-down converter for processing signals received through the feed horn; and a skew compensation unit which is provided at the low noise block-down converter or the feed horn and rotates the low noise block-down converter or the feed horn to compensate for a skew angle when the satellite signals received through the feed horn are linear polarized waves, wherein the low noise block-down converter includes a polarizer rotation unit for receiving linear polarized signals or circular polarized signals from the satellite signals and can receive and process the linear polarized waves and circular polarized waves using a simple structure.
H01Q 3/02 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
H01Q 15/16 - Reflecting surfacesEquivalent structures curved in two dimensions, e.g. paraboloidal
The reflector assembly body for a satellite antenna of the present invention comprises: a reflector having a parabola-shape and made of a first material; and a reinforced member made of a second material, the reinforced member being placed around the rims of the reflector in the circumferential direction of the reflector, wherein the reflector includes a bending portion that couples the reinforced member to the reflector by bending the rims thereof so as to surround the reinforced member. The present invention increases the rigidity of the reflector while maintaining the light weight, and enhances the efficiency and productivity in the manufacturing process.
The present invention relates to a multiband signal transceiver, which can simultaneously transmit and receive a multiband signal in one device, and can moreover compensate for a skew angle that occurs in the reception of linearly polarized waves. Also, the transceiver of the present invention can automatically control a location of a feed horn according to the reception sensitivity of the feed horn, and can moreover appropriately match the feed horn and processing units according to a band of a signal received by the feed horn.
H01Q 3/01 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the shape of the antenna or antenna system
Disclosed is a multiband signal transmitting/receiving apparatus using a reflector antenna and a horn antenna. A dual band signal transmitting/receiving apparatus includes a first horn for transmitting/receiving a first frequency band signal, a second horn for transmitting/receiving a second frequency band signal which is higher than the first frequency band signal, a horn connector for interconnecting the first horn and the second horn, a first low noise block down converter for amplifying and converting the frequency of the first frequency band signal, and a second low noise block down converter for amplifying and converting the frequency of the second frequency band signal.
