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H03H 1/00
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Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network |
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H03H 1/02
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RC networks, e.g. filters |
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H03H 2/00
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Networks using elements or techniques not provided for in groups |
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H03H 3/00
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Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators |
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H03H 3/02
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Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks |
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H03H 3/04
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Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient |
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H03H 3/06
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Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of magnetostrictive resonators or networks |
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H03H 3/007
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Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks |
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H03H 3/08
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Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves |
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H03H 3/10
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Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves for obtaining desired frequency or temperature coefficient |
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H03H 3/013
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Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for obtaining desired frequency or temperature coefficient |
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H03H 5/00
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One-port networks comprising only passive electrical elements as network components |
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H03H 5/02
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One-port networks comprising only passive electrical elements as network components without voltage- or current-dependent elements |
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H03H 5/10
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One-port networks comprising only passive electrical elements as network components without voltage- or current-dependent elements comprising at least one element with prescribed temperature coefficient |
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H03H 5/12
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One-port networks comprising only passive electrical elements as network components with at least one voltage- or current-dependent element |
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H03H 7/00
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Multiple-port networks comprising only passive electrical elements as network components |
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H03H 7/01
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Frequency selective two-port networks |
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H03H 7/03
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Frequency selective two-port networks comprising means for compensation of loss |
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H03H 7/06
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Frequency selective two-port networks including resistors |
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H03H 7/07
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Bridged T-filters |
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H03H 7/09
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Filters comprising mutual inductance |
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H03H 7/12
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Bandpass or bandstop filters with adjustable bandwidth and fixed centre frequency |
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H03H 7/13
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Frequency selective two-port networks using electro-optical elements |
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H03H 7/18
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Networks for phase shifting |
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H03H 7/19
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Two-port phase shifters providing a predetermined phase shift, e.g. "all-pass" filters |
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H03H 7/20
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Two-port phase shifters providing an adjustable phase shift |
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H03H 7/21
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Networks for phase shifting providing two or more phase shifted output signals, e.g. n-phase output |
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H03H 7/24
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Frequency-independent attenuators |
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H03H 7/25
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Frequency-independent attenuators comprising an element controlled by an electric or magnetic variable |
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H03H 7/27
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Frequency-independent attenuators comprising a photo-electric element |
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H03H 7/30
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Time-delay networks |
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H03H 7/32
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Time-delay networks with lumped inductance and capacitance |
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H03H 7/34
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Time-delay networks with lumped and distributed reactance |
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H03H 7/38
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Impedance-matching networks |
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H03H 7/40
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Automatic matching of load impedance to source impedance |
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H03H 7/42
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Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns |
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H03H 7/46
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Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source |
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H03H 7/48
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Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source |
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H03H 7/52
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One-way transmission networks, i.e. unilines |
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H03H 7/54
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Modifications of networks to reduce influence of variations of temperature |
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H03H 7/065
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Parallel T-filters |
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H03H 7/075
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Ladder networks, e.g. electric wave filters |
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H03H 9/00
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Networks comprising electromechanical or electro-acoustic elementsElectromechanical resonators |
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H03H 9/02
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Networks comprising electromechanical or electro-acoustic elementsElectromechanical resonators Details |
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H03H 9/05
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Holders or supports |
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H03H 9/08
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Holders with means for regulating temperature |
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H03H 9/09
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Elastic or damping supports |
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H03H 9/10
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Mounting in enclosures |
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H03H 9/12
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Mounting in enclosures for networks with interaction of optical and acoustic waves |
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H03H 9/13
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Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials |
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H03H 9/15
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Constructional features of resonators consisting of piezoelectric or electrostrictive material |
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H03H 9/17
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Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator |
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H03H 9/19
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Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz |
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H03H 9/21
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Crystal tuning forks |
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H03H 9/22
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Constructional features of resonators consisting of magnetostricitve material |
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H03H 9/24
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Constructional features of resonators of material which is not piezoelectric, electrostrictive, or magnetostrictive |
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H03H 9/25
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Constructional features of resonators using surface acoustic waves |
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H03H 9/30
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Time-delay networks |
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H03H 9/36
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Time-delay networks with non-adjustable delay time |
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H03H 9/38
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Time-delay networks with adjustable delay time |
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H03H 9/40
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Frequency-dependent delay lines, e.g. dispersive delay lines |
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H03H 9/42
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Time-delay networks using surface acoustic waves |
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H03H 9/44
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Frequency-dependent delay lines, e.g. dispersive delay lines |
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H03H 9/46
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Filters |
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H03H 9/48
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Coupling means therefor |
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H03H 9/50
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Mechanical coupling means |
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H03H 9/52
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Electric coupling means |
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H03H 9/54
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Filters comprising resonators of piezoelectric or electrostrictive material |
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H03H 9/56
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Monolithic crystal filters |
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H03H 9/58
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Multiple crystal filters |
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H03H 9/60
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Electric coupling means therefor |
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H03H 9/62
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Filters comprising resonators of magnetostrictive material |
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H03H 9/64
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Filters using surface acoustic waves |
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H03H 9/66
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Phase shifters |
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H03H 9/68
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Phase shifters using surface acoustic waves |
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H03H 9/70
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Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common or source |
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H03H 9/72
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Networks using surface acoustic waves |
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H03H 9/74
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Multiple-port networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source |
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H03H 9/76
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Networks using surface acoustic waves |
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H03H 9/125
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Driving means, e.g. electrodes, coils |
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H03H 9/135
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Driving means, e.g. electrodes, coils for networks consisting of magnetostrictive materials |
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H03H 9/145
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Driving means, e.g. electrodes, coils for networks using surface acoustic waves |
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H03H 9/205
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Constructional features of resonators consisting of piezoelectric or electrostrictive material having multiple resonators |
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H03H 9/215
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Crystal tuning forks consisting of quartz |
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H03H 11/00
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Networks using active elements |
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H03H 11/02
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Multiple-port networks |
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H03H 11/04
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Frequency selective two-port networks |
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H03H 11/06
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Frequency selective two-port networks comprising means for compensation of loss |
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H03H 11/08
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Frequency selective two-port networks using gyrators |
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H03H 11/10
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Frequency selective two-port networks using negative impedance converters |
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H03H 11/12
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Frequency selective two-port networks using amplifiers with feedback |
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H03H 11/14
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Frequency selective two-port networks using electro-optical devices |
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H03H 11/16
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Networks for phase shifting |
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H03H 11/18
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Two-port phase shifters providing a predetermined phase shift, e.g. "all-pass" filters |
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H03H 11/20
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Two-port phase shifters providing an adjustable phase shift |
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H03H 11/22
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Networks for phase shifting providing two or more phase shifted output signals, e.g. n-phase output |
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H03H 11/24
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Frequency-independent attenuators |
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H03H 11/26
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Time-delay networks |
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H03H 11/28
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Impedance matching networks |
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H03H 11/30
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Automatic matching of source impedance to load impedance |
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H03H 11/32
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Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns |
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H03H 11/34
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Networks for connecting several sources or loads working on different frequencies or frequency bands, to a common load or source |
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H03H 11/36
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Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source |
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H03H 11/38
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One-way transmission networks, i.e. unilines |
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H03H 11/40
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Impedance converters |
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H03H 11/42
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Gyrators |
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H03H 11/44
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Negative impedance converters |
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H03H 11/46
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One-port networks |
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H03H 11/48
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One-port networks simulating reactances |
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H03H 11/50
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One-port networks simulating reactances using gyrators |
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H03H 11/52
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One-port networks simulating negative resistances |
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H03H 11/54
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Modifications of networks to reduce influence of variations of temperature |
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H03H 15/00
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Transversal filters |
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H03H 15/02
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Transversal filters using analogue shift registers |
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H03H 17/00
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Networks using digital techniques |
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H03H 17/02
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Frequency-selective networks |
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H03H 17/04
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Recursive filters |
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H03H 17/06
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Non-recursive filters |
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H03H 17/08
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Networks for phase-shifting |
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H03H 19/00
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Networks using time-varying elements, e.g. N-path filters |
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H03H 21/00
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Adaptive networks |
