| Patents for H03H 19 - Networks using time-varying elements, e.g. n-path filters (1,194) |
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| 03/08/1988 | CA1233890A1 Decimating filter |
| 01/26/1988 | CA1232037A1 Filter arrangement |
| 12/29/1987 | US4716388 Multiple output allpass switched capacitor filters |
| 12/29/1987 | US4716375 Switched-capacitor multiplier circuit |
| 11/19/1987 | EP0245896A2 Electrical filter |
| 10/29/1987 | DE3711604A1 Phasentrennvorrichtung fuer mos-integrierte schaltkreise, insbesondere zur steuerung von filtern mit geschalteter kapazitaet Phase separator for MOS integrated circuits, in particular for the control of switched capacitor filter |
| 10/06/1987 | US4698596 Switched capacitor switching |
| 10/06/1987 | CA1227837A1 Narrow-band beam steering system |
| 09/22/1987 | US4696055 RF tuning circuit which provides image frequency rejection |
| 09/01/1987 | US4691171 Integrated RC filter with resistor trimming |
| 08/11/1987 | US4686686 Line equalizer operable in response to an input signal of a variable data rate |
| 07/14/1987 | CA1224252A1 Switched capacitor filter |
| 06/24/1987 | EP0226490A1 Synchronous switched-capacitor filter |
| 06/18/1987 | WO1987003757A1 Enhanced quadrature notch filter |
| 05/26/1987 | CA1222293A1 Automatic linear compression circuit |
| 04/23/1987 | DE3536731A1 Controllable low-pass filter |
| 04/21/1987 | US4659996 Method and apparatus for de-ringing a switched capacitor filter |
| 03/24/1987 | US4653017 Decimating filter |
| 03/03/1987 | US4646611 Electronic musical instrument |
| 02/24/1987 | US4646258 Sampled N-path filter |
| 02/17/1987 | US4644304 Switched-capacitor pseudo-n-path filter |
| 02/17/1987 | US4644291 Operational amplifier |
| 02/04/1987 | CN85108578A Switched capacitor finite impulse response filter |
| 01/28/1987 | EP0209948A1 Switched-capacitor multiplier circuit |
| 01/27/1987 | US4639795 Signal transmission circuit |
| 01/21/1987 | CN85109426A Declimating filter |
| 01/06/1987 | US4634960 Automatic linear compression circuit |
| 12/30/1986 | US4633496 Low-pass filter circuit |
| 12/30/1986 | US4633425 Switched capacitor filter utilizing a differential input and output circuit |
| 12/30/1986 | US4633223 DC offset correction circuit utilizing switched capacitor differential integrator |
| 12/02/1986 | US4626808 Electrical filter circuit for processing analog sampling signals |
| 11/18/1986 | US4623854 Switched capacitor filter |
| 11/11/1986 | US4622480 Switched capacitor circuit with high power supply projection ratio |
| 11/04/1986 | CA1213647A2 Switched capacitor circuit |
| 10/29/1986 | EP0199631A2 Method of configuring N-TH degree switched capacitor filter |
| 10/14/1986 | US4617481 Amplifier circuit free from leakage between input and output ports |
| 10/07/1986 | US4616231 Narrow-band beam steering system |
| 10/07/1986 | US4616185 Multiplying circuit comprising switched-capacitor circuits |
| 08/26/1986 | CA1210463A1 Switched capacitor filter |
| 08/20/1986 | EP0191619A2 Automatic linear compression circuit |
| 08/20/1986 | EP0191529A2 Electrical filter |
| 08/19/1986 | US4607231 Variable switched-capacitor filter capable of changing the filter characteristic thereof |
| 08/19/1986 | CA1210092A1 Switched capacitor circuits |
| 08/13/1986 | CN86101494A Automatic linear compression circuit |
| 07/22/1986 | CA1208317A1 Switched capacitor circuit |
| 07/15/1986 | US4600904 Broken loop switched capacitor high pass filter |
| 07/08/1986 | US4599573 Switched capacitor filter utilizing a differential input and output circuit and method |
| 06/25/1986 | EP0185416A2 Radio receiver/transmitter filters |
| 06/24/1986 | CA1206542A1 Switched capacitor high-pass filter |
| 06/04/1986 | EP0118482B1 Switched capacitor filter |
| 06/03/1986 | US4593250 Operational amplifier compensation technique for biquadratic notch active filters |
| 04/22/1986 | US4584532 For providing an amplitude envelope of an input signal |
| 04/16/1986 | EP0054561B1 Switched-capacitor interpolation filter |
| 04/02/1986 | EP0176459A1 Ear phone, telephone handset and head phones for correcting individual hearing deficiencies |
| 03/26/1986 | EP0174948A1 Narrow-band beam steering system |
| 03/12/1986 | EP0174005A2 Line equalizer operable in response to an input signal of a variable data rate |
| 03/04/1986 | US4574250 Switched capacitor filter utilizing a differential input and output circuit and method |
| 02/04/1986 | US4569072 Clock-controlled filtering arrangement |
| 01/21/1986 | CA1199691A1 High-pass filter of the first order and application thereof to telephony |
| 01/14/1986 | CA1199409A1 Method and apparatus for digital time-variant filtering |
| 12/24/1985 | CA1198509A1 Device for the compensation of hearing impairments |
| 12/17/1985 | US4559498 Symmetrical integrator and application of said integrator to an electric filter |
| 12/11/1985 | EP0164108A2 Variable switched-capacitor filter capable of changing the filter characteristic thereof |
| 12/10/1985 | US4558292 Low pass filter |
| 12/04/1985 | EP0163333A1 Filter arrangement |
| 11/26/1985 | US4555668 Gain amplifier |
| 11/05/1985 | US4551683 Switched capacitor filter circuit |
| 10/29/1985 | US4550295 Switched capacitor integrator |
| 10/10/1985 | WO1985004508A1 Narrow-band beam steering system |
| 10/08/1985 | CA1194945A1 Switched capacitor filter having a reduced capacitance |
| 09/25/1985 | EP0055260B1 Switched-capacitor cosine filter |
| 09/24/1985 | US4543546 Switched capacitor circuit with minimized switched capacitance |
| 08/27/1985 | US4538113 Switched capacitor filter |
| 08/20/1985 | CA1192277A1 Dynamic amplifier circuit |
| 08/13/1985 | US4535417 Method and apparatus for digital time-variant filtering |
| 08/13/1985 | CA1191958A1 Delta-sigma modulator with switched capacitor implementation |
| 08/06/1985 | US4533877 Telecommunication operational amplifier |
| 07/23/1985 | US4531106 Switched capacitor circuits |
| 07/16/1985 | CA1190615A1 Switched capacitor n-path filter |
| 06/25/1985 | CA1189582A1 Switched-capacitor modulator for quadrature modulation |
| 06/18/1985 | US4524425 High-pass filter of the first order and application thereof to telephony |
| 06/04/1985 | US4521907 For minimizing error components in the analog output signal |
| 06/04/1985 | US4521750 Characteristic switching circuit |
| 06/04/1985 | CA1188424A1 Multiplier/adder circuit |
| 05/29/1985 | EP0143024A1 Large-time constant exponential integrator furnished with switched capacitors |
| 05/28/1985 | US4520283 Band pass filter with a switched capacitor |
| 05/21/1985 | US4518936 Commutating filter passing only the fundamental frequency and odd harmonics thereof |
| 05/21/1985 | US4518935 Band-rejection filter of the switched capacitor type |
| 05/14/1985 | US4517519 FSK Demodulator employing a switched capacitor filter and period counters |
| 04/24/1985 | EP0138260A2 Gain amplifier |
| 04/23/1985 | US4513265 3-Phase switched capacitor circuit having an inductive characteristic |
| 04/16/1985 | US4511851 Method and apparatus for obtaining small fractional units of capacitance |
| 04/11/1985 | WO1985001623A1 Switched capacitor circuits |
| 04/09/1985 | US4510585 Multi-channel seismic exploration system |
| 04/02/1985 | US4508982 Floating node stabilizing circuit for a switched-capacitor circuit and filter |
| 04/02/1985 | US4508940 Device for the compensation of hearing impairments |
| 03/27/1985 | EP0135212A1 Band-rejection filter of the switched capacitor type |
| 02/26/1985 | US4502019 Dynamic amplifier circuit |
| 02/20/1985 | EP0133387A1 Switched capacitor filter with a repetitive structure |
| 02/19/1985 | CA1182924A1 Capacitive dac to switched capacitor filter interface circuit |