| Patents for H03H 19 - Networks using time-varying elements, e.g. n-path filters (1,194) |
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| 06/18/1991 | US5025172 Clock generator generating trapezoidal waveform |
| 06/04/1991 | US5021681 Jiter-invariant switched capacitor pulse shaper |
| 05/16/1991 | DE3937259A1 Single-double sideband filtering and demodulating - converting signal with or without carrier into LF range from IF plane |
| 05/14/1991 | US5016012 Technique for compensating switched capacitor circuits having gain-setting resistors |
| 04/30/1991 | US5012245 Integral switched capacitor FIR filter/digital-to-analog converter for sigma-delta encoded digital audio |
| 04/30/1991 | US5012133 Circuit arrangement for processing sampled analog electrical signals |
| 04/16/1991 | US5008674 Digital-to-analog converter using switched capacitor and transverse filter |
| 04/10/1991 | EP0421653A2 Technique for compensating switched capacitor circuits having gain-setting resistors |
| 04/10/1991 | EP0421651A2 Integral switched capacitor for filter/digital to analog converter for sigma-delta encoded digital audio |
| 03/27/1991 | EP0419037A2 Detector circuit |
| 02/27/1991 | EP0414114A1 Receiver circuit |
| 02/05/1991 | US4989603 Implantable cardiac defibrillator employing a switched capacitor filter stage having a low charge-injection induced offset voltage |
| 01/29/1991 | US4988952 High Q switched capacitor filter having internal thin-film resistors |
| 01/24/1991 | DE3922867A1 Circuit for stereo audio signal distribution from matrix - has connectable second coupling branch from first input stage capacitor to second integrating stage |
| 01/01/1991 | US4982317 Integrated voltage multiplier circuit for low supply voltage |
| 12/27/1990 | WO1990016116A1 Detector circuit for a programmable matched filter |
| 12/27/1990 | WO1990016112A1 Saw band filter with adjustable median frequency |
| 12/20/1990 | DE3920168A1 Filter Filter |
| 12/20/1990 | DE3920167A1 Schaltungsanordnung Circuitry |
| 12/04/1990 | US4975653 FM detector using switched capacitor circuits |
| 11/29/1990 | WO1990014712A1 Low current switched capacitor circuit |
| 11/14/1990 | EP0397252A2 Integrator circuit |
| 11/13/1990 | US4970703 Switched capacitor waveform processing circuit |
| 10/23/1990 | US4965711 Switched capacitor network |
| 09/18/1990 | US4958123 Circuit arrangement for processing sampled analogue electrical signals |
| 09/04/1990 | US4954785 Auto tracking notch filter using switched capacitors to measure harmonic distortion and noise contained in a signal source |
| 08/22/1990 | EP0383396A2 Circuit arrangement for processing sampled analogue electrical signals |
| 08/16/1990 | DE4001747A1 Adaptable high pass filter assembly - has controllable cut=off frequency, and passes selectively signal components of higher frequencies |
| 06/27/1990 | EP0375017A2 Completely differential filter with switched condensers using CMOS operational amplifiers with no common-mode feedback |
| 06/26/1990 | US4937476 Self-biased, high-gain differential amplifier with feedback |
| 05/22/1990 | US4928315 For removing an undesired frequency component from a received signal |
| 05/08/1990 | US4924189 Two-port switched capacitor filter netowrk with linearized phase/frequency response |
| 05/08/1990 | US4924115 Integrated circuit RC filters with very large time constants |
| 04/24/1990 | US4920325 Integrated active electronic switched capacitor filter having extremely low sensitivity to variations of the components |
| 04/18/1990 | EP0363715A2 Integrated-voltage multiplier circuit for a low-voltage power supply |
| 04/17/1990 | US4918454 Compensated capacitors for switched capacitor input of an analog-to-digital converter |
| 04/17/1990 | US4918338 Drain-biassed transresistance device for continuous time filters |
| 04/11/1990 | EP0362935A2 Drain-biassed transresistance device |
| 03/14/1990 | CN1007197B Automatic linear compression circuit |
| 03/13/1990 | US4908579 Switched capacitor sampling filter |
| 02/27/1990 | CA1266335A1 Offset-compensated switched-capacitor filter for tdm multichannel analog signals |
| 02/07/1990 | EP0353308A1 Semiconductor device |
| 02/06/1990 | US4899069 Integrated active low-pass filter of the first order |
| 01/30/1990 | US4897596 Circuit arrangement for processing sampled analogue electrical signals |
| 01/16/1990 | US4894620 Switched-capacitor circuit with large time constant |
| 12/14/1989 | WO1989012358A1 Digital-to-analogue conversion |
| 12/06/1989 | EP0344998A1 Digital-to-analogue conversion |
| 11/08/1989 | EP0340439A2 Switched capacitor amplifier circuit |
| 11/02/1989 | EP0339819A2 Electronic filter |
| 10/24/1989 | US4876464 Sampled data circuit |
| 08/29/1989 | US4862121 Switched capacitor filter |
| 08/22/1989 | US4860354 Arrangement for decoding a stereo multiplex signal |
| 08/15/1989 | US4857860 Clock-sweepable low-pass filter having DC gain accuracy and reduced DC offset |
| 07/27/1989 | WO1989006862A1 Semiconductor device |
| 07/25/1989 | US4851719 Time constant automatic adjustment circuit for a filter circuit |
| 07/18/1989 | US4849662 Switched-capacitor filter having digitally-programmable capacitive element |
| 07/18/1989 | US4849661 CMOS input buffer with switched capacitor reference voltage generator |
| 07/05/1989 | EP0322963A1 Switched-capacitor network |
| 06/29/1989 | WO1989006069A1 Switched capacitor circuits |
| 06/29/1989 | WO1989005983A1 Chirped backscatter filter |
| 06/28/1989 | EP0322379A2 Integrated active low-pass filter of the first order |
| 06/28/1989 | EP0322074A2 Circuit arrangement for processing sampled analogue electrical signals |
| 06/28/1989 | EP0322063A2 Circuit arrangement for processing sampled analogue electrical signals |
| 06/20/1989 | US4841263 Biquad block with switched capacitors without continuous feedback loop and with no sensitivity compared with the gain of operational amplifiers and the ratio of the capacitances |
| 05/30/1989 | US4835482 Semiconductor integrated circuit forming a switched capacitor filter |
| 05/23/1989 | US4833691 Line equalizer |
| 03/22/1989 | EP0308287A1 Switched capacitor biquadratic element without a permanent negative feedback loop and having a low sensitivity towards operational amplifier gain and capacitor ratio |
| 03/15/1989 | EP0307276A1 Sampling filter device with switched capacitors |
| 03/15/1989 | EP0307275A1 Switched capacitor four-terminal filter network for the phase/frequency response linearizing of same |
| 03/09/1989 | WO1989002192A1 Switched capacitor circuit |
| 02/21/1989 | US4806874 Switched capacitor amplifier circuit |
| 02/14/1989 | US4805126 Electronic compensation network |
| 02/07/1989 | US4803650 Method of configuring an n- th degree switched capacitor filter |
| 01/31/1989 | US4801888 Programmable, universal filter with self biasing |
| 01/03/1989 | US4795987 Parasitic insensitive switched capacitor filter |
| 12/29/1988 | DE3720196A1 Device for detecting the attenuation of optical fibres |
| 12/13/1988 | US4791379 Electrical filter with adjustable RC product |
| 12/06/1988 | US4789995 Synchronous timer anti-alias filter and gain stage |
| 11/15/1988 | US4785250 Electrical component simulator |
| 10/18/1988 | US4779056 Active filter |
| 09/06/1988 | US4769612 Integrated switched-capacitor filter with improved frequency characteristics |
| 09/06/1988 | CA1241710A1 Switched capacitor adaptive line equalizer |
| 08/30/1988 | US4768205 Switched capacitor adaptive line equalizer |
| 08/16/1988 | US4764957 Earpiece, telephone handset and headphone intended to correct individual hearing deficiencies |
| 08/09/1988 | US4763088 Switching scheme for switched capacitor filters |
| 08/09/1988 | US4763081 Reducing distortion in active MOSFET-C low pass filters |
| 08/03/1988 | EP0276507A1 Arrangement for decoding a stereo multiplex signal |
| 07/27/1988 | EP0275590A2 Switched capacitor circuit |
| 07/05/1988 | US4755779 Synchronous filter with switched capacitances |
| 06/14/1988 | US4751666 Switched capacitor finite impulse response filter |
| 06/08/1988 | EP0270192A2 Filter |
| 05/25/1988 | EP0158646B1 Switched capacitor circuits |
| 05/17/1988 | US4745594 Offset-compensated switched-capacitor filter for TDM multichannel analog signals |
| 05/10/1988 | US4743872 Switched capacitor circuit |
| 04/19/1988 | US4739189 Rapid slewing filter |
| 03/23/1988 | EP0260545A2 Active filter |
| 03/22/1988 | US4733205 Electrical filter |
| 03/22/1988 | CA1234415A1 Switched capacitor filter |
| 03/15/1988 | US4731587 Enhanced quadrature notch filter |
| 03/08/1988 | CA1233891A1 Switched capacitor finite impulse response filter |