| Patents for H03H 19 - Networks using time-varying elements, e.g. n-path filters (1,194) |
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| 07/06/1982 | US4338531 Slide wire device simulator circuit and method |
| 07/06/1982 | US4338530 Low-pass filter for low-frequency signals |
| 06/22/1982 | US4336513 Hum reduction circuit |
| 06/08/1982 | US4334195 Voltage controlled attenuator |
| 06/01/1982 | US4333157 Switched-capacitor floating-inductor simulation circuit |
| 06/01/1982 | US4333064 Switched-capacitor filter |
| 05/25/1982 | US4331944 Switched-capacitor resistor simulation circuits |
| 05/25/1982 | US4331894 Switched-capacitor interolation filter |
| 05/11/1982 | US4329599 Switched-capacitor cosine filter |
| 03/30/1982 | US4322697 Sampling filter for reducing aliasing distortion |
| 03/16/1982 | US4320519 (Sin X)/X correction circuit for a sampled data system |
| 03/16/1982 | US4320362 Filter for analog signals |
| 03/10/1982 | EP0047098A1 Adjustable attenuator circuit |
| 03/09/1982 | US4319207 Narrow-band-pass switching follower filter having n switched paths |
| 02/09/1982 | US4315227 Generalized switched-capacitor active filter |
| 01/26/1982 | US4313096 Parasitic-free switched capacitor network |
| 01/21/1982 | WO1982000229A1 Sampling filter for reducing aliasing distortion |
| 01/12/1982 | US4310803 Bandpass filter circuit |
| 01/05/1982 | US4309678 Sampling filter |
| 12/30/1981 | EP0042386A1 Low sensitivity switched-capacitor ladder filter using monolithic mos chip |
| 12/23/1981 | EP0042116A1 Electrical filter circuit for sampled analog signal processing |
| 12/15/1981 | US4306203 Filter |
| 12/15/1981 | US4306197 Switched-capacitor elliptic filter |
| 12/10/1981 | WO1981003589A1 Switched-capacitor interpolation filter |
| 12/10/1981 | WO1981003587A1 Switched-capacitor cosine filter |
| 12/01/1981 | US4303839 Process for filtering an electrical signal by charge transfer into a semiconductor and switch capacitor filter using such a process |
| 12/01/1981 | CA1113553A1 High pass switched capacitor filter section |
| 11/17/1981 | US4301419 Parasitic capacitance compensation in CMOS-switched active filter |
| 11/04/1981 | EP0039076A1 Integrator circuit with sampling stage |
| 10/20/1981 | US4296392 Switched capacitor bilinear resistors |
| 10/13/1981 | CA1110769A1 Digital signal processing arrangement |
| 09/15/1981 | US4290034 Switched capacitor filter |
| 08/12/1981 | EP0033455A2 Electrical filter circuit using at least one simulated inductance, comprising controlled switches, capacitors and amplifiers |
| 07/29/1981 | EP0032737A2 Electrical filter circuit using at least one simulated inductance, comprising controlled switches, capacitors and amplifiers |
| 06/25/1981 | WO1981001779A1 Switched-capacitor elliptic filter |
| 06/25/1981 | WO1981001778A1 Low sensitivity switched-capacitor ladder filter using monolithic mos chip |
| 06/24/1981 | EP0030824A1 An integrator with a switched capacitor and its use in a filter |
| 06/17/1981 | EP0030520A1 Process and device for testing coated supporting-web material so as to determine the presence of pouring streaks |
| 06/10/1981 | EP0030173A1 Switched capacitor charge transfer filter |
| 05/20/1981 | EP0028961A1 Charge transfer filter and switched capacitor filter comprising a voltage multiplier with switched capacitors |
| 05/12/1981 | CA1101078A1 Discrete fourier transform equalizer and method |
| 05/05/1981 | US4266205 Resonator formed in integrated MOS technology utilizing switched capacitors |
| 03/17/1981 | US4257007 Active high-power bandpass filter |
| 02/18/1981 | EP0024011A1 Electrical filter circuit using at least one simulated inductance comprising controlled switches, capacitors and amplifiers |
| 02/17/1981 | US4251785 Integrated filter circuit |
| 01/28/1981 | EP0023081A1 A filter circuit including a switched-capacitor filter |
| 01/21/1981 | EP0022695A1 Commutated filter unit |
| 01/20/1981 | US4246553 Integrated filter circuit |
| 01/20/1981 | CA1094174A1 Sampling filter-detector |
| 01/07/1981 | EP0020379A1 Voltage reversing switch. |
| 12/30/1980 | US4242732 Commutating narrowband filter |
| 12/10/1980 | EP0020131A1 Switched-capacitor filter |
| 11/04/1980 | US4232269 Digitally programmable active RC bandpass filter with constant absolute bandwidth |
| 10/21/1980 | CA1088161A1 Sampled analog filters |
| 10/07/1980 | CA1087255A1 Digitally programmable sampled-analog transversal filter |
| 09/23/1980 | US4224582 Commutating capacitive envelope detector |
| 09/17/1980 | EP0015343A1 Switched capaciter filter and method of making same |
| 08/20/1980 | EP0014628A1 N-path frequency-tracking filter |
| 08/20/1980 | EP0014604A1 Sampling filter |
| 08/20/1980 | EP0014506A1 Low-pass filter for low-frequency signals |
| 08/19/1980 | US4218665 Band-pass filter |
| 07/15/1980 | US4213065 Device for providing a selectively variable proportion of an electrical signal |
| 07/01/1980 | US4210872 High pass switched capacitor filter section |
| 06/25/1980 | EP0012667A1 Method of filtering an electric signal by charge transfer in a semi-conductor and switched capacitor filter utilizing such a method |
| 05/20/1980 | US4204171 Filter which tracks changing frequency of input signal |
| 04/16/1980 | EP0010014A1 Charge transfer filter and switched capacitor filter comprising a voltage muliplier having switched capacitors |
| 04/08/1980 | US4197515 Synchronous filter |
| 04/03/1980 | WO1980000644A1 Filter for electrical oscillations comprised of switches,condensors and amplifiers |
| 03/19/1980 | EP0008675A1 Integrated filter network |
| 03/19/1980 | EP0008674A1 Integrated filter network |
| 03/11/1980 | US4193033 Quadrature transposition stage |
| 12/18/1979 | US4179665 Switched capacitor elliptic filter |
| 10/23/1979 | CA1065024A1 Reduction of aliasing distortion in sampled signals |
| 09/18/1979 | US4168440 LC Simulated filter with transmission zeros |
| 06/19/1979 | CA1056951A1 Analog signal processor |
| 05/01/1979 | US4152649 Channel equalization apparatus and method using the Fourier transform technique |
| 04/24/1979 | US4151474 Variable bandwidth pass-band filter |
| 11/28/1978 | US4127824 Sampling filter-detector |
| 10/31/1978 | CA1041654A1 Multiplexer commutated high pass filter |
| 10/24/1978 | CA1041208A1 Seismic data telemetering system |
| 10/17/1978 | US4121296 Digital signal processing arrangement |
| 09/12/1978 | US4114117 Tunable electrical filter network |
| 04/25/1978 | US4086540 Translating filter |
| 09/20/1977 | US4050026 Device for frequency discrimination of electrical signals |
| 08/02/1977 | US4039979 Reduction of aliasing distortion in sampled signals |
| 06/21/1977 | US4031506 Multiplexer commutated high pass filter |
| 06/21/1977 | US4031490 Analog signal processor |
| 05/10/1977 | US4023140 Seismic data telemetering system |
| 01/18/1977 | US4004238 Method and apparatus for the removal of ringing phenomena from signal impulses |
| 12/07/1976 | US3996553 Seismic data telemetering system |
| 09/07/1976 | US3979684 Feedback filter system |
| 08/31/1976 | US3978416 Filter which tracks changing frequency of input signal |
| 04/06/1976 | US3949173 Device for the suppression of a pilot frequency in a multiplex transmission system |
| 01/06/1976 | US3930727 Automatic variable filters for use in scanned spectrometers and the like |