| Patents for H03H 19 - Networks using time-varying elements, e.g. n-path filters (1,194) |
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| 02/20/2001 | US6191631 Electric circuit comprising at least one switched capacitor and method of operating said circuit |
| 01/30/2001 | US6181740 Sampling system |
| 01/24/2001 | EP1071206A1 A receiver portion of a telephone |
| 01/23/2001 | US6177897 Hybrid FIR/IIR analog filter |
| 01/10/2001 | EP1066684A1 Circuit and method for reducing sampling noise |
| 01/09/2001 | US6172630 Extended common mode input range for a delta-sigma converter |
| 01/02/2001 | US6169509 Switched capacitor type D/A converter and display driver |
| 01/02/2001 | US6169446 Time constant calibration device |
| 01/02/2001 | US6169440 Offset-compensated switched-opamp integrator and filter |
| 12/26/2000 | US6166581 Differential integrator having offset and gain compensation, not requiring balanced inputs |
| 12/26/2000 | US6166567 Analog sampling processor |
| 12/21/2000 | WO2000077929A1 Switched capacitors |
| 12/19/2000 | US6163287 Hybrid low-pass sigma-delta modulator |
| 12/07/2000 | WO2000074244A1 Droop-free quasi-continuous reconstruction filter interface |
| 12/07/2000 | WO2000074236A1 Band-pass filter with carrier frequency reduction |
| 11/14/2000 | US6147551 Switched capacitor circuit and method for reducing sampling noise |
| 11/07/2000 | US6144141 Piezoelectric resonator and electronic component containing same |
| 10/31/2000 | US6140951 Double sampled switched capacitor low pass multirate filter for a ΣΔ D/A converter |
| 10/17/2000 | US6133775 Integrated circuit with switched capacitor |
| 10/12/2000 | WO2000060745A1 Hybrid low-pass sigma-delta modulator |
| 10/10/2000 | US6130948 Sound field processor with sound field expanding apparatus |
| 10/04/2000 | CN1057176C Switched capacitor bandpass filter for detecting pilot signal |
| 10/03/2000 | US6127855 Switch-capacitor circuit with overdrive-protected switch |
| 08/22/2000 | US6107871 Double sampling analog low pass filter |
| 08/09/2000 | CN1262556A Integration processing method and device for real-time signals |
| 08/08/2000 | CA2216725C Monolithic mos-sc circuit |
| 08/01/2000 | US6097248 Switched capacitor amplifier with one-clock delay |
| 08/01/2000 | US6097244 Highly-linear continuous-time filter for a 3-volt supply with PLL-controlled resistor and digitally-controlled capacitor |
| 07/13/2000 | WO2000041311A1 Circuits, systems and methods for processing data in a one-bit format |
| 06/28/2000 | EP1014288A1 Improved method and circuit arrangement for signal processing |
| 06/28/2000 | CN1258054A Improved method and circuit arrangement for processing signals |
| 06/13/2000 | US6075401 Switching circuit and switched capacitor |
| 06/06/2000 | US6072360 Analog sampling filters |
| 05/23/2000 | US6067037 Digital-to-analog converter implemented by simple switched capacitor array and method for controlling thereof |
| 05/10/2000 | EP0686324B1 Receiver having an adjustable bandwidth filter |
| 05/09/2000 | US6061279 Delay circuit for analog signals |
| 04/12/2000 | EP0992112A2 Complex switched capacitor filter and designing method for such a filter |
| 04/11/2000 | US6049235 Semiconductor device, signal processing system using the same, and calculation method therefor |
| 03/21/2000 | US6040727 Delay device |
| 03/14/2000 | US6037836 Switched-capacitor amplifier circuit |
| 03/07/2000 | US6035049 AC coupling and signal amplification using switched capacitors |
| 03/02/2000 | DE19938045A1 Extended common mode input range for differential delta-sigma analog to digital converter (ADC) with delta-sigma modulator for use in digital multimeter (DMM) |
| 03/01/2000 | EP0982863A1 Switched capacitor comparator and D/A converter |
| 02/08/2000 | US6023191 Method and apparatus for detecting an input signal |
| 01/26/2000 | EP0975092A2 Continuous tuning of switched capacitor circuits using DC-isolated tuning elements |
| 01/04/2000 | US6011501 Circuits, systems and methods for processing data in a one-bit format |
| 01/04/2000 | US6011432 Continuous tuning of switched capacitor circuits using DC-isolated tuning elements |
| 12/29/1999 | EP0967728A2 Switched capacitor type D/A converter and display driver |
| 12/29/1999 | EP0967719A1 Circuit device for cancelling glitches in a switched capacitor low-pass filter and corresponding filter |
| 12/01/1999 | EP0961406A2 Method and circuit for sampling a signal at high sampling frequency |
| 11/23/1999 | US5990578 Capacitive sensor arrangement |
| 11/09/1999 | US5982229 Signal processing scheme utilizing oversampled switched capacitor filter |
| 10/26/1999 | US5973536 Switched capacitor filter |
| 10/13/1999 | EP0949755A2 Switched capacitor amplifier with one-clock delay |
| 09/28/1999 | US5960183 Signal processing circuit comprising switched transconductors |
| 09/14/1999 | US5953480 Comb filter arrangement |
| 09/14/1999 | US5953430 Filter circuit and audio signal processor provided therewith |
| 08/04/1999 | EP0933871A2 Linearized charge sharing circuits with nonlinear capacitors |
| 08/04/1999 | EP0933870A2 Hybrid FIR/IIR analog filter |
| 08/03/1999 | US5933052 Offset insensitive hysteresis limiter |
| 08/03/1999 | CA2151943C Method and apparatus for integrating a plurality of input signals |
| 07/20/1999 | US5926512 Matched filter circuit |
| 07/15/1999 | WO1999035741A1 Circuit and method for reducing sampling noise |
| 06/16/1999 | EP0922962A1 Procedure and device for sampling a reactance |
| 06/09/1999 | EP0640257B1 Photodiode preamplifier with programmable gain amplification |
| 06/09/1999 | CN1043596C Method and apparatus for integrating a plurality of input signals |
| 06/02/1999 | EP0920131A2 Electric circuit comprising at least a switched capacitor and method for operating this circuit |
| 05/19/1999 | EP0917289A2 Integrated circuit with switched capacitor |
| 05/18/1999 | US5905397 Switching circuit and switched capacitor circuit including the switching circuit |
| 04/15/1999 | WO1999000899B1 Complex switched capacitor filter and designing method for such a filter |
| 04/06/1999 | US5892473 Switched capacitor digital-analog converter with a decreased harmonic distortion |
| 04/06/1999 | US5892472 Processor controlled analog-to-digital converter circuit |
| 03/24/1999 | EP0903862A1 Double sampled switched capacitor low pass multirate filter of a sigma delta D/A converter |
| 03/18/1999 | WO1999000899A3 Complex switched capacitor filter and designing method for such a filter |
| 01/20/1999 | EP0834992B1 Monolithic MOS switched-capacitor circuit with on-chip oscillator |
| 01/12/1999 | CA2152497C Method and apparatus for detecting an input signal level |
| 01/07/1999 | WO1999000899A2 Complex switched capacitor filter and designing method for such a filter |
| 01/07/1999 | EP0889597A2 Analog-to-digital converter circuit with selectable input gain |
| 12/23/1998 | EP0847559A4 Methods and systems for designing and making signal-processor circuits with internal companding, and the resulting circuits |
| 12/22/1998 | US5852416 High speed arithmetic logic circuit |
| 12/17/1998 | DE19750922C1 Integrated circuit with switched capacitor simulating Ohmic resistance |
| 11/24/1998 | US5841822 Band-pass sigma-delta converter and commutating filter therefor |
| 11/24/1998 | US5841315 Matched filter circuit |
| 11/11/1998 | EP0877387A2 Delay device |
| 10/20/1998 | US5825230 Amplifier-less low power switched-capacitor techniques |
| 10/13/1998 | US5822236 For outputting |
| 09/30/1998 | CN1194501A Monolithic MOS-SC circuit (MOS-SC is well known term in said field) |
| 09/03/1998 | WO1998038732A1 Quadrature modulation and demodulation circuit for an oscillating waveform |
| 08/11/1998 | US5793257 Oscillator having switching capacitors and phase-locked loop employing same |
| 08/04/1998 | US5790064 Apparatus and method for switching capacitors within a switched capacitor circuit at times selected to avoid data dependent loading upon reference voltage supplies |
| 07/01/1998 | CN1186386A Band-pass sigma-delta converter and commutating filter therefor |
| 06/30/1998 | US5774555 Switched capacitor bandpass filter for detecting pilot signal |
| 06/17/1998 | EP0847559A1 Methods and systems for designing and making signal-processor circuits with internal companding, and the resulting circuits |
| 06/16/1998 | US5768315 Band-pass sigma-delta converter and commutating filter therefor |
| 06/16/1998 | US5767722 Delta sigma switch capacitor filter using curent feed forward |
| 06/10/1998 | EP0847138A2 Capacitive sensing device |
| 04/28/1998 | US5745002 Low voltage, switched capacitance circuit employing switched operational amplifiers with maximized voltage swing |
| 04/08/1998 | EP0834992A1 Monolithic MOS switched-capacitor circuit with on-chip oscillator |
| 04/07/1998 | US5736896 Signal processing circuit |
| 04/07/1998 | US5736895 Biquadratic switched-capacitor filter using single operational amplifier |