| Patents for H03H 19 - Networks using time-varying elements, e.g. n-path filters (1,194) |
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| 04/19/1995 | EP0649221A1 Chopper-stabilized switched-capacitor filter |
| 03/21/1995 | CA1334872C Digital-to-analogue conversion |
| 03/01/1995 | EP0641075A1 Switched-capacitor circuit |
| 03/01/1995 | EP0641074A1 Switched-capacitor circuit |
| 03/01/1995 | EP0640257A1 Photodiode preamplifier with programmable gain amplification |
| 02/28/1995 | US5394111 Operational amplifier with junction field effect transistors as input transistor pair |
| 02/21/1995 | US5392043 Double-rate sampled signal integrator |
| 02/21/1995 | US5391999 Glitchless switched-capacitor biquad low pass filter |
| 02/07/1995 | US5387882 Switched capacitor charge pump and sawtooth oscillator using same |
| 01/12/1995 | WO1995001573A1 Electrical test instrument |
| 12/28/1994 | EP0631395A1 Signal processing circuitry comprising an input stage with variable gain |
| 12/28/1994 | CN1027199C Integrated circuit for analog system |
| 12/27/1994 | US5376891 Phase-sensitive rectifier arrangement with integration effect |
| 11/08/1994 | US5363055 Photodiode preamplifier with programmable gain amplification |
| 10/26/1994 | EP0621550A2 Method and apparatus for processing signals |
| 10/25/1994 | US5359383 Automatic focusing system with phase difference detecting unit employing correlation operating circuit |
| 10/25/1994 | US5359294 Charge-balanced switched-capacitor circuit and amplifier circuit using same |
| 10/19/1994 | EP0620642A2 Inverting delay circuit |
| 10/13/1994 | WO1994023502A1 Switched capacitor one-bit digital-to-analog converter |
| 10/13/1994 | WO1994023494A1 Double sampled biquad switched capacitor filter |
| 10/05/1994 | EP0618472A2 A scanner |
| 09/29/1994 | WO1994022216A1 Photodiode preamplifier with programmable gain amplification |
| 09/20/1994 | US5349245 Signal processing arrangements |
| 09/07/1994 | EP0614285A1 Digital-to-analog converters |
| 09/06/1994 | US5345119 Continuous-time filter tuning with a delay-locked-loop in mass storage systems or the like |
| 09/01/1994 | WO1994019763A1 Signal processing circuit comprising switched transconductors |
| 08/25/1994 | DE4328974C1 Switched-capacitor network |
| 08/25/1994 | DE4328973C1 Switched-capacitor network |
| 08/17/1994 | EP0611165A1 Programmable switched capacitor circuit |
| 08/17/1994 | EP0610939A1 Voltage drop circuit to be built in semiconductor IC chip |
| 08/17/1994 | EP0610911A2 Narrow-band filter having a variable center frequency |
| 08/13/1994 | CA2115330A1 Programmable switched capacitor circuit |
| 08/09/1994 | US5336242 Band-pass filter for use in a sense amplifier of an implantable cardiac pacer |
| 07/19/1994 | US5331222 Cochlear filter bank with switched-capacitor circuits |
| 07/19/1994 | US5331218 Switched-capacitor notch filter with programmable notch width and depth |
| 07/06/1994 | EP0604686A1 Switched coupling network for a.c. signals in (BI)MOS. |
| 07/05/1994 | US5327092 Switched capacitor filter circuit employing two switched capacitor filters |
| 06/29/1994 | EP0604397A2 Digital-to-analogue conversion |
| 06/21/1994 | US5323158 Switched capacitor one-bit digital-to-analog converter |
| 06/01/1994 | EP0599557A2 Switched capacitor circuit |
| 05/05/1994 | DE4236947A1 Sample=and=hold circuit with low pass filter - has additional switching element integrated in filter for which output voltage is constant when open and equal to last value when closed |
| 03/24/1994 | DE4231471A1 Receiving or processing electronic signals - passing signals through selection circuits with multiplexers whose clock frequency determine middle frequency of selection. |
| 03/22/1994 | US5296822 Low pass filter circuit device and method having selectable cutoff frequency |
| 03/08/1994 | US5293139 CMOS-compander |
| 02/22/1994 | US5289059 Switched capacitor decimator |
| 02/16/1994 | EP0582862A1 Switched capacitor amplifier circuit |
| 12/22/1993 | EP0574982A1 Switched capacitor charge pump, as well as sawtooth oscillator comprising such a switched capacitor charge pump |
| 11/23/1993 | US5264804 Lowpass filter with improved D.C. offset performance |
| 10/27/1993 | EP0345346B1 Chirped backscatter filter |
| 10/05/1993 | US5251162 Integratable circuit configuration with an analog network |
| 09/23/1993 | DE4209172A1 Analogue rank filter of regular similar stages - has serial-to-parallel converter outputs connected to inputs of N staged ranking circuit including noise generator |
| 09/14/1993 | US5245344 High order switched-capacitor filter with dac input |
| 09/08/1993 | EP0559282A2 Signal processing arrangements |
| 08/24/1993 | US5239210 Low distortion unity gain amplifier for dac |
| 06/15/1993 | US5220483 Tri-level capacitor structure in switched-capacitor filter |
| 05/12/1993 | EP0540906A1 Phase-sensitive rectifying device with integrating effect |
| 05/05/1993 | EP0540163A2 Switched capacitor analog circuits |
| 04/21/1993 | EP0537959A2 CMOS-Compander |
| 04/14/1993 | CN1020322C Modulation method of control signal |
| 03/30/1993 | US5198782 Low distortion amplifier output stage for dac |
| 03/24/1993 | EP0532780A1 Integrated circuit comprising an analog circuit |
| 03/23/1993 | US5196740 Integrated circuit for analogue system |
| 01/26/1993 | US5182521 Time-multiplexed switched capacitor circuit having reduced capacitance |
| 01/05/1993 | US5177484 Switched capacitor oversampling analog/digital converter with noise filtering |
| 12/10/1992 | DE4218533A1 Schaltkondensator-schaltkreis mit chopperstabilisiertem verstaerker Switched capacitor circuitry with chopperstabilisiertem verstaerker |
| 12/01/1992 | US5168461 Switched capacitor differentiators and switched capacitor differentiator-based filters |
| 11/24/1992 | US5166630 Low current switched capacitor circuit |
| 11/03/1992 | CA1309757C Switched-capacitor circuit with large time constant |
| 09/22/1992 | CA1307836C Switched capacitor amplifier circuit |
| 09/02/1992 | EP0500918A1 Double rate oversampled interpolative modulators for analog-to-digital conversion |
| 08/25/1992 | US5142238 Switched-capacitor differential amplifier |
| 06/23/1992 | US5124761 Semiconductor apparatus |
| 06/23/1992 | US5124593 Continuous-time filter tuning circuit and method |
| 05/05/1992 | US5111419 Electronic filters, signal conversion apparatus, hearing aids and methods |
| 04/02/1992 | WO1992005637A1 Double rate oversampled interpolative modulators for analog-to-digital conversion |
| 04/01/1992 | EP0477694A2 Continuous-time filter tuning circuit and method |
| 03/18/1992 | CA2042213A1 Double rate oversampled interpolative modulators for analog-to-digital conversion |
| 03/17/1992 | US5097155 Switched-current differentiators and filters |
| 02/25/1992 | US5091956 Adaptive high pass filter having cut-off frequency controllable responsive to input signal and operating method therefor |
| 01/28/1992 | US5084683 Completely differential filter with switched condensers using cmos operational amplifiers with no common-mode feedback |
| 12/31/1991 | US5077835 Receiver circuit |
| 12/27/1991 | EP0249623B1 Enhanced quadrature notch filter |
| 12/18/1991 | EP0461282A1 Oversampling analog/digital converter with noise shaping in switched capacitor techniques |
| 12/10/1991 | US5072219 Digital-analog conversion system including a digital modulator having several quantification levels, associated with a digital-analog converter |
| 12/04/1991 | EP0459484A2 Automatic focusing system with phase difference detecting unit employing correlation operating circuit |
| 11/26/1991 | CA1292520C Jitter-invariant switched capacitor pulse shaper |
| 10/31/1991 | WO1991016764A1 Low current switched capacitor circuit |
| 10/22/1991 | US5059832 Switched current integrator circuit |
| 10/16/1991 | CN1055436A Integrated circuit for analog system |
| 10/09/1991 | EP0450866A2 Semiconductor capacitor circuit |
| 10/09/1991 | EP0450863A2 Integrated circuit for analog system |
| 10/04/1991 | CA2039421A1 Semiconductor capacitor circuit |
| 09/25/1991 | EP0448142A2 Switched capacitor filter circuit |
| 09/17/1991 | CA1289198C Line equalizer |
| 08/21/1991 | CN1053977A Modulation method of control signal |
| 08/13/1991 | US5039963 Method for reducing signal-dependent distortion in switched-capacitor filters or the like |
| 07/31/1991 | EP0439276A2 Method for reducing signal-dependent distortion in switched-capacitor filters or the like |
| 07/16/1991 | US5032776 Attenuation filter |
| 07/09/1991 | US5030954 Double rate oversampled interpolative modulators for analog-to-digital conversion |
| 07/02/1991 | US5028893 Switched capacitor filters with continuous time control |