| Patents for H03H 11 - Networks using active elements (9,098) |
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| 12/15/1987 | US4713563 d.c. Block capacitor circuit for rejection of d.c. offset |
| 12/10/1987 | DE3619280A1 Radio-frequency phase shifter |
| 12/02/1987 | EP0247871A2 Variable phase shifting circuit |
| 12/01/1987 | US4710726 Semiconductive MOS resistance network |
| 11/19/1987 | EP0245896A2 Electrical filter |
| 11/17/1987 | US4707620 Adjustable impedance driver network |
| 11/12/1987 | DE3607333C1 Circuit arrangement for simulating an inductance |
| 11/11/1987 | CN87100128A Amplifier circuit adapted to active filter circuits |
| 11/04/1987 | EP0244116A2 Analog circuit improvement in a digital integrated circuit technology |
| 11/04/1987 | EP0244020A2 Electrical filter |
| 10/28/1987 | EP0242479A2 Precision remotely-switched attenuator |
| 10/27/1987 | US4703327 Interrogator/receiver system for use with a remote transponder |
| 10/27/1987 | US4703251 Testing and calibrating of amplitude insensitive delay lines |
| 10/22/1987 | WO1987006405A1 Low-pass filtering cell for integrated circuit |
| 10/21/1987 | EP0241871A2 Integrated circuit for implementing active filters without external components |
| 10/15/1987 | DE3611682A1 Measurement arrangement having an active filter |
| 10/14/1987 | EP0241383A1 Low-pass filter for an integrated circuit |
| 10/14/1987 | EP0241067A1 Filter circuit for a metal oxide integrated semiconductor device and its use in such a device |
| 10/13/1987 | US4700153 Signal coupling circuit |
| 10/13/1987 | CA1228175A1 Integrated circuit filter with reduced die area |
| 10/08/1987 | WO1987006074A1 A programmable electronic filter |
| 10/07/1987 | EP0239989A1 Power source voltage regulator device incorporated in LSI circuit |
| 10/07/1987 | EP0239696A2 Linearity correcting control circuit for tunable delay line |
| 10/01/1987 | DE3610403A1 Continuously adjustable high-voltage resistance divider followed by an impedance converter |
| 09/24/1987 | WO1987005760A1 Cmos voltage translator |
| 09/23/1987 | EP0238124A1 High-frequency attenuator having a high input impedance and multiple calibration possibilities, and use of the same as active probe in oscilloscopes |
| 09/22/1987 | US4696055 RF tuning circuit which provides image frequency rejection |
| 09/22/1987 | US4696044 Dynamic noise reduction with logarithmic control |
| 09/22/1987 | US4695806 Precision remotely-switched attenuator |
| 09/16/1987 | EP0237203A2 Hearing aid circuit |
| 09/16/1987 | EP0236866A1 Capacitance multiplying circuit, especially for an electronic junction |
| 09/15/1987 | CA1226911A1 Voltage controlled diode attenuator |
| 09/09/1987 | EP0236076A2 Circuits for altering the dynamic range of audio signals |
| 09/09/1987 | EP0235791A2 Digital phase shifter |
| 09/08/1987 | US4692689 FET voltage reference circuit with threshold voltage compensation |
| 09/08/1987 | CA1226631A1 Complex capacitive impedance |
| 09/01/1987 | US4691384 Intrinsically safe multi-drop communications link |
| 09/01/1987 | US4691171 Integrated RC filter with resistor trimming |
| 08/26/1987 | EP0233717A2 Active attenuation system with on-line modeling of speaker, error path and feedback path |
| 08/25/1987 | US4689580 Active filter circuit |
| 08/19/1987 | EP0232699A2 An amplifier circuit suitable for use as an active filter circuit |
| 08/13/1987 | WO1987004876A1 Balanced differential load |
| 08/11/1987 | US4686486 Active filter having series resonant active filter terminated by parallel resonant active filter |
| 08/04/1987 | US4684976 Feedback comb-type filter |
| 08/04/1987 | US4684965 Monolithic programmable attenuator |
| 08/04/1987 | US4684832 Analog circuit improvement in a digital integrated circuit technology |
| 07/30/1987 | DE3601926A1 Tunable two-phase oscillator |
| 07/28/1987 | CA1224894A1 Subscriber line interface circuit having an impedance synthesizer |
| 07/21/1987 | US4682176 Active matching transmit/receive module |
| 07/21/1987 | US4682099 Logarithmic potentiometer circuit |
| 07/14/1987 | US4680795 Dual purpose variable Q filter |
| 07/07/1987 | US4679002 Electromagnetically shielded narrow band electroencephalographic amplifier |
| 07/07/1987 | US4679001 For suppressing energy at time varying frequencies |
| 07/01/1987 | EP0227156A2 Delay line tuning control circuit |
| 06/30/1987 | US4677676 Active attenuation system with on-line modeling of speaker, error path and feedback pack |
| 06/30/1987 | US4677650 Charge coupled semiconductor device with dynamic control |
| 06/30/1987 | US4677395 Digital phase shifter |
| 06/30/1987 | US4676105 Tissue signature tracking transceiver |
| 06/30/1987 | CA1223647A1 Filter integrated circuit |
| 06/24/1987 | EP0226154A2 Monolithic dual-gate GaAs fet digital phase shifter with gain |
| 06/24/1987 | EP0225902A1 Improvements in or relating to transconductors |
| 06/23/1987 | US4675616 Second order all pass network |
| 06/23/1987 | US4675557 CMOS voltage translator |
| 06/18/1987 | WO1987003757A1 Enhanced quadrature notch filter |
| 06/17/1987 | CN86205529U General impedance converter |
| 06/16/1987 | EP0225332A1 Balanced variable reactance circuit and method of producing the same. |
| 06/16/1987 | CA1223051A1 Quadrupole for resistive matching of a reactance of the rlc type |
| 05/26/1987 | US4668920 Power divider/combiner circuit |
| 05/20/1987 | CN86106494A Adaptive resistance-trap filter |
| 05/19/1987 | US4667168 Integrated circuit with a phase-locked loop |
| 05/19/1987 | US4667120 Integrated filter circuit with variable frequency characteristics |
| 05/14/1987 | DE3540294C1 RC coupling filter, in particular input filter for centralised multistation control systems |
| 05/06/1987 | EP0220861A2 Phase shifter |
| 05/06/1987 | EP0220486A2 Broad-band integrator |
| 05/05/1987 | US4663597 RC coupling filter, especially an input filter, for receivers of centralized ripple control systems |
| 05/05/1987 | US4663594 Electronic phase shifter circuit and method |
| 05/05/1987 | US4663586 Device with automatic compensation of an ac attenuator |
| 05/05/1987 | US4663584 Intermediate potential generation circuit |
| 05/05/1987 | US4663583 Automatically variable phase characteristic all-pass circuit |
| 04/29/1987 | EP0220043A2 Circuits to provide desired conductance characteristics using a fet |
| 04/28/1987 | US4661978 Subscriber line interface circuit having an impedence synthesizer |
| 04/28/1987 | US4661789 Microwave recursive filter |
| 04/28/1987 | US4661780 Differential stage particularly for active filters |
| 04/22/1987 | EP0218861A2 Adaptive stop-notch filter |
| 04/21/1987 | US4659995 Active fourth-degree filter element |
| 04/15/1987 | CN85107517A Phase-shifting device |
| 04/14/1987 | US4658225 Circuit for filtering an input signal |
| 04/07/1987 | CA1220250A1 Single adjustment phase resolver with constant amplitude output |
| 03/25/1987 | EP0215339A2 Circuit arrangement performing the function of a hold inductance in exchange junction circuits of private branch exchanges |
| 03/25/1987 | EP0215137A1 Tissue signature tracking tranceiver |
| 03/24/1987 | US4652835 Gain control bandpass LCR filter with variable bandwidth |
| 03/24/1987 | US4652778 I2 L delay circuit with phase comparator and temperature compensator for maintaining a constant delay time |
| 03/18/1987 | EP0214376A2 Circuit arrangement for a low-noise audio-frequency signal source |
| 03/10/1987 | US4649427 Video signal delay circuit |
| 03/04/1987 | EP0212267A1 Improved differential input attenuator circuit |
| 03/03/1987 | US4647789 Active element microwave phase shifter |
| 02/24/1987 | US4646036 Signal attenuation circuit |
| 02/17/1987 | US4644306 Programmable electronic synthesized capacitance |
| 02/17/1987 | US4644295 Balanced differential load and method |
| 02/17/1987 | US4644182 Delay circuit having delay time period determined by discharging operation |