| Patents for H03H 11 - Networks using active elements (9,098) |
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| 04/02/1985 | US4509021 Circuit for amplifying and/or attenuating a signal |
| 04/02/1985 | US4509019 Tunable active filter |
| 03/26/1985 | US4507618 Compensation method and apparatus for an RC attenuator |
| 03/19/1985 | US4506233 Bandwidth control circuit for a phase locked loop |
| 03/19/1985 | US4506231 Single adjustment phase resolver with constant amplitude output |
| 03/12/1985 | US4504795 Impedance conversion circuit using FETs |
| 03/12/1985 | CA1183914A1 Response time bidirectional circuitry |
| 02/19/1985 | US4500845 Programmable attenuator |
| 02/13/1985 | EP0133080A1 Two-port impedance network functioning independently of the working frequency, and travelling wave amplifier using the same |
| 02/05/1985 | US4498052 Signal detecting circuit |
| 01/29/1985 | US4496859 Notch filter system |
| 01/29/1985 | CA1181823A1 Impedance transformation network for a saw filter |
| 01/22/1985 | US4495473 Digital phase shifting apparatus which compensates for change of frequency of an input signal to be phase shifted |
| 01/15/1985 | US4494084 Pin diode linear attenuator controlled by a companding DAC |
| 01/15/1985 | US4494076 Signal input circuit with controlled input signal attenuation |
| 01/08/1985 | US4492928 Comb filter |
| 01/08/1985 | CA1180777A1 Pseudo-active quasi-elliptic filter comprising resonant circuits |
| 01/01/1985 | US4491807 FET Negative resistance circuits |
| 12/27/1984 | CA1180070A Adaptive filter |
| 12/25/1984 | US4490734 Variable impedance circuit employing an RIS field effect transistor |
| 12/18/1984 | US4489342 MOSFET Integrated delay circuit for digital signals and its use in color-televison receivers |
| 12/18/1984 | US4489286 Inductive electrical signal filter with reduced impedance |
| 12/12/1984 | EP0127832A1 Improved differential stage particularly for active filters |
| 12/04/1984 | US4486723 Diode switching system for a selectable impedance matching network |
| 11/28/1984 | EP0052117B1 Current mode biquadratic active filter |
| 11/27/1984 | US4485360 Apparatus for and method of impedance matching |
| 11/27/1984 | US4485356 Variable low frequency sinusoidal oscillator using simulated inductance |
| 11/27/1984 | US4485350 Variable electronic impedance circuit |
| 11/21/1984 | EP0125426A2 Integrated circuit filter with adjustable characteristics |
| 11/20/1984 | US4484146 Differential amplifier containing a low-pass filter |
| 11/20/1984 | US4484089 Switched-capacitor conductance-control of variable transconductance elements |
| 11/07/1984 | EP0123909A2 Variable resistance circuit |
| 11/07/1984 | EP0123884A2 Charging/discharging circuit |
| 10/31/1984 | EP0122918A1 Acoustic charge transport device and method. |
| 10/30/1984 | US4480236 Channelized serial adaptive filter processor |
| 10/24/1984 | EP0122300A1 Integrated circuit for delivering a digitally controllable terminal voltage |
| 10/23/1984 | US4479160 Band-pass sequence filters for symmetrical components of multiphase AC power systems |
| 10/16/1984 | US4477817 Switching circuit including pin diodes for impedance matching |
| 10/16/1984 | CA1176318A1 Apparatus and method for removal of sinusoidal noise from a sampled signal |
| 10/10/1984 | EP0121278A1 Attenuator circuit |
| 10/09/1984 | US4476578 Device for detecting the optimum anode load impedance of a tube transmitter in a high frequency transmission chain |
| 10/02/1984 | US4475229 Device for producing artifical reverberation |
| 09/25/1984 | US4473803 Electronic volume control circuit for audio devices |
| 09/18/1984 | US4472689 Multi-purpose filter |
| 08/29/1984 | EP0117008A2 Analogue wave filter device |
| 08/29/1984 | EP0116669A1 Delay circuit with an integrated insulated layer field-effect transistor for digital signals |
| 08/28/1984 | CA1173578A1 Subscriber line interface circuit with impedance synthesizer |
| 08/14/1984 | US4465981 Adaptive control signal filter for audio signal expander |
| 08/07/1984 | US4464637 Semi-active notch filter |
| 08/02/1984 | WO1984003009A1 Tunable active filter |
| 07/24/1984 | CA1171475A1 Two-terminal-pair network simulating an inductance |
| 07/18/1984 | EP0113588A2 Method of and apparatus for low noise current amplification |
| 07/10/1984 | CA1170579A1 Reverberation apparatus |
| 07/03/1984 | US4458219 Variable phase shifter |
| 06/26/1984 | US4456885 Filter circuit suitable for being fabricated into integrated circuit |
| 06/19/1984 | CA1169503A1 Driving point impedance derived from a transfer impedance |
| 06/19/1984 | CA1169497A1 Voltage controlled subcarrier phase shifter |
| 06/13/1984 | EP0110555A2 Improvements in or relating to state variable filters |
| 06/12/1984 | US4454471 Electronic arrangement for determination of reactive power |
| 06/12/1984 | CA1169131A1 Remote control precision step attenuator |
| 06/12/1984 | CA1169129A1 Single amplifier variable gyrator |
| 06/05/1984 | US4453137 Signal processor for plural frequency detection and tracking over predetermined range of frequencies |
| 06/05/1984 | US4453132 Active filter |
| 06/05/1984 | CA1168776A1 Automatic, digitally synthesized matching line terminating impedance |
| 06/05/1984 | CA1168746A1 Overcurrent relay circuit |
| 06/05/1984 | CA1168719A1 Switched-capacitor resistor simulation circuits |
| 06/05/1984 | CA1168714A1 Phase locked loop circuit |
| 05/22/1984 | US4450417 Feed forward circuit |
| 05/22/1984 | US4450372 Electronic control variable phase shift device comprising a long gate field effect-transistor and a circuit using such a device |
| 05/01/1984 | US4446512 Circuitry for sine wave reconstruction |
| 05/01/1984 | US4446493 Variable frequency-response equalizer |
| 04/17/1984 | US4443882 Single terminal negative capacitance generator for response time enhancement |
| 04/10/1984 | US4442434 Antenna circuit of the negative impedance type |
| 04/10/1984 | US4442416 Variable impedance synthesis apparatus |
| 04/03/1984 | US4441072 Multiple input output electrical isolation for use with electronic integrated circuits |
| 03/20/1984 | US4438525 Reverberation apparatus |
| 03/20/1984 | US4438408 Signal attenuating apparatus |
| 03/20/1984 | US4438405 Frequency discriminating device |
| 03/20/1984 | US4438404 Signal sampling system |
| 03/14/1984 | EP0102773A2 Delay circuit arrangements |
| 03/13/1984 | US4437067 Transient error reduction for stored charged circuits |
| 03/13/1984 | US4436956 Switchable bandpass filter |
| 03/06/1984 | US4435730 Low noise CCD output |
| 03/01/1984 | WO1984000859A1 Acoustic charge transport device and method |
| 02/28/1984 | US4434497 Communication system |
| 02/28/1984 | CA1162996A1 Switched-capacitor floating-inductor simulation circuit |
| 02/28/1984 | CA1162995A1 Switched capacitor bilinear resistors |
| 02/21/1984 | US4433368 Power supply circuit for a variable electrical source |
| 02/21/1984 | US4433308 PLL Detection circuit |
| 02/21/1984 | US4433301 Equalization preamplifier with high frequency gain peaking |
| 02/15/1984 | EP0100597A1 RC-active filters |
| 02/14/1984 | US4431969 Clock pulse phase shifter |
| 02/08/1984 | EP0100145A2 Electrical filter comprising resonant circuits |
| 02/07/1984 | US4430626 Networks for the log domain |
| 01/31/1984 | US4429239 Combined phase detector and low pass filter |
| 01/31/1984 | CA1161537A1 Apparatus for producing artificial reverberations |
| 01/31/1984 | CA1161504A1 Analog integrated filter circuit |
| 01/17/1984 | US4426630 Electronically tunable band reject filter |
| 01/03/1984 | US4424462 Switched delay circuit |
| 01/03/1984 | CA1159915A1 Adjustable and elective electrical filters |