| Patents for H03H 11 - Networks using active elements (9,098) |
|---|
| 08/23/1989 | EP0329575A1 Band stop filter attenuation compensating circuit for frequencies below the cut-off frequency |
| 08/23/1989 | EP0329245A1 Integrated low-pass filter arrangement |
| 08/22/1989 | US4859881 Filter circuit |
| 08/15/1989 | US4857778 Programmable universal active filter |
| 08/15/1989 | US4857777 Monolithic microwave phase shifting network |
| 08/08/1989 | US4855627 Filter circuit |
| 08/08/1989 | US4855626 Controllable integrator |
| 08/03/1989 | DE3802810A1 Active frequency diplexer |
| 08/01/1989 | US4853759 Integrated circuit filter with reduced die area |
| 08/01/1989 | US4853658 Microwave phase shifters |
| 08/01/1989 | US4853651 Delay circuit with all-pass network |
| 07/25/1989 | US4851719 Time constant automatic adjustment circuit for a filter circuit |
| 07/25/1989 | US4851718 Active filter type signal adjusting circuit |
| 07/19/1989 | EP0323996A1 Oscillator network and quadrature network for radio receiver |
| 07/18/1989 | US4849709 Variable frequency characteristic circuit for a vehicular sound device |
| 07/18/1989 | US4849663 Switchable smoothing network |
| 07/11/1989 | CA1257328A1 Current source with adjustable temperature coefficient |
| 07/05/1989 | EP0322803A2 Automatic gain control amplifier for compensating cable loss |
| 07/05/1989 | EP0322577A2 Signal delay circuit |
| 07/04/1989 | US4845446 Dynamically variable attenuator |
| 06/28/1989 | EP0322157A1 Active low-pass filter for use with high frequency signal source apparatus |
| 06/27/1989 | US4843343 Enhanced Q current mode active filter |
| 06/21/1989 | CN1004601B Filter with same frequency |
| 06/21/1989 | CN1004600B Amplifier circuit adapted to advice filter circuits |
| 06/20/1989 | US4841471 System for converting analog signals to a discrete representation without aliasing |
| 06/20/1989 | US4841461 Filter adjustment apparatus and method |
| 06/20/1989 | US4841179 Phase equalizing active filter |
| 06/14/1989 | EP0319727A2 Circuitry for a low-pass filter with a controllable frequency limit |
| 06/13/1989 | US4839611 Voltage controlled high-frequency attenuator |
| 06/13/1989 | US4839610 System for automatically controlling the gain-bandwidth product of operational amplifiers |
| 06/13/1989 | US4839542 Active transconductance filter device |
| 06/06/1989 | US4837532 MMIC (monolithic microwave integrated circuit) voltage controlled analog phase shifter |
| 06/06/1989 | US4837530 Wideband (DC-50 GHz) MMIC FET variable matched attenuator |
| 06/06/1989 | CA1255361A1 Digital analysing and synthesizing filter bank with maximum sampling rate reduction |
| 05/31/1989 | EP0318105A1 Analog circuit for baseband modem |
| 05/31/1989 | EP0317759A2 Adjustable delay circuit |
| 05/31/1989 | EP0317758A2 Method for providing a delayed signal and controllable delay circuit |
| 05/30/1989 | US4835486 Isolation amplifier with precise timing of signals coupled across isolation barrier |
| 05/23/1989 | US4833472 System for setting an analog resistor to a selectable, digitally predeterminable value |
| 05/23/1989 | US4833420 Low-pass filter for integrated circuit |
| 05/23/1989 | US4833400 High frequency multi-range attenuator having a high input impedance |
| 05/23/1989 | US4833340 Phase shifter |
| 05/16/1989 | US4831377 Method and apparatus for reduced settling time in a filter for a DC voltage |
| 05/16/1989 | US4831336 Zero to one hundred and eight-degree active phase shifter for microwave frequencies |
| 05/11/1989 | DE3736347A1 Delay circuit |
| 05/10/1989 | EP0315385A2 Delay circuits for integrated circuits |
| 05/09/1989 | US4829307 Recursive radar clutter filter |
| 05/09/1989 | US4829272 Electromagnetic variable delay line system |
| 05/09/1989 | US4829270 Compansion system |
| 05/03/1989 | EP0314235A1 Circuit forming an RC filter for band rejection application |
| 05/02/1989 | CA1253585A1 Narrow band electroencephalographic amplifier |
| 04/26/1989 | EP0312589A1 Antenna coupler |
| 04/19/1989 | EP0312145A1 Circuit forming an active RC filter for band stop or allpass application |
| 04/19/1989 | EP0312142A1 Read circuit for a delay circuit |
| 04/18/1989 | US4823092 MOS transconductance amplifier for active filters |
| 04/11/1989 | US4819600 Knock detection system for an internal combustion engine |
| 04/05/1989 | EP0309672A2 Circuit arrangement for processing colour television signals |
| 04/04/1989 | US4818952 Oscillation circuit |
| 04/04/1989 | US4818903 Time constant automatic adjustment circuit for a filter circuit |
| 03/30/1989 | DE3730692A1 Method for pulling the resonant frequency of a quartz circuit, and quartz circuit for a large frequency pulling range |
| 03/29/1989 | EP0308844A2 Phase shift circuit |
| 03/29/1989 | EP0308628A2 Level setting circuit for audio signals |
| 03/29/1989 | EP0191784B1 Optical receiver circuit |
| 03/22/1989 | EP0308071A2 A phase shift arrangement |
| 03/22/1989 | EP0307572A2 Multiple phase clock generator |
| 03/21/1989 | CA1251527A1 Adaptive stop-notch filter |
| 03/14/1989 | US4812785 Gyrator circuit simulating an inductance and use thereof as a filter or oscillator |
| 03/14/1989 | US4812773 Filter adjustment apparatus and method |
| 03/14/1989 | US4812688 Transistor delay circuits |
| 03/07/1989 | US4811422 Reduction of undesired harmonic components |
| 03/02/1989 | DE3727778A1 RC filter |
| 03/01/1989 | EP0304611A1 Circuit arrangement for antenna signal distribution |
| 02/28/1989 | US4808947 Integrated active filter without external components |
| 02/28/1989 | US4808936 Continuously variable clock delay circuit |
| 02/28/1989 | US4808860 Filter circuit for a MOS-type integrated device, and an integrated device comprising such a filter circuit |
| 02/28/1989 | CA1250625A1 Broad band integrator |
| 02/22/1989 | EP0304027A2 Phase shifter |
| 02/21/1989 | US4806888 Monolithic vector modulator/complex weight using all-pass network |
| 02/15/1989 | EP0303410A2 Non-linear squelch circuit |
| 02/14/1989 | US4805021 Control circuit for calibrating a delay line |
| 02/14/1989 | US4804904 Voltage to current converters for use in an active filter and with a moise reduction circuit |
| 02/08/1989 | EP0302584A2 Improvements in or relating to microwave phase shifters |
| 02/08/1989 | EP0302290A2 Automatic frequency control system |
| 01/31/1989 | US4801901 Non-ferrite non-reciprocal phase shifter and circulator |
| 01/26/1989 | WO1989000791A1 Oscillator network for radio receiver |
| 01/25/1989 | EP0300656A2 Temperature compensated delay line |
| 01/17/1989 | US4798973 High frequency charge pump/integrator circuit |
| 01/10/1989 | US4797933 Bass amplifier with high frequency response |
| 01/10/1989 | US4797586 Controllable delay circuit |
| 01/03/1989 | US4795962 Floating driver circuit and a device for measuring impedances of electrical components |
| 01/03/1989 | US4795923 Adjustable delay circuit |
| 01/03/1989 | CA1248186A1 Active filter circuit |
| 12/29/1988 | WO1988010534A1 A device for use at active filters and use thereof |
| 12/27/1988 | US4794275 Multiple phase clock generator |
| 12/21/1988 | EP0296131A1 Device for use at active filters and use thereof |
| 12/21/1988 | EP0295704A2 Reactance circuit |
| 12/20/1988 | US4792977 Hearing aid circuit |
| 12/20/1988 | US4792749 Power source voltage detector device incorporated in LSI circuit |
| 12/20/1988 | US4792744 Arrangement for shifting the phase of a signal passed through two parallel branches with one branch having a phase shifting network |
| 12/13/1988 | US4791379 Electrical filter with adjustable RC product |