| Patents for H03H 11 - Networks using active elements (9,098) |
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| 04/10/1991 | EP0421559A2 Device for modifying the dynamic range of an input signal |
| 04/10/1991 | EP0421530A1 Balanced filter circuit |
| 04/10/1991 | EP0421423A2 Method of controlling filter time constant and filter circuit having the time constant control function based on the method |
| 04/10/1991 | EP0420974A1 Tunable resonance amplifier. |
| 04/09/1991 | US5006823 Microwave phase shifter with 0 or π phase shift |
| 04/09/1991 | US5006810 Second order active filters |
| 04/09/1991 | US5006738 Delay circuit for integrated circuit |
| 04/09/1991 | US5006735 Method and apparatus for compensating a solid state attenuator |
| 04/09/1991 | US5006733 Filter control circuit |
| 04/03/1991 | EP0420341A1 Balanced filter circuit |
| 04/03/1991 | EP0420106A1 Attenuator using a dual gate field effect transistor |
| 04/03/1991 | CN1050476A Broad-band electronic pulse transformer |
| 03/27/1991 | EP0418614A2 Method and apparatus for calibrating linear delay lines |
| 03/27/1991 | CA2026129A1 Two-gate field effect transistor attenuator |
| 03/19/1991 | US5001524 Digitally controlled field effect attenuator devices |
| 03/19/1991 | US5001441 Operational transconductance amplifier programmable filter |
| 03/12/1991 | US4999584 Signal-shaping network |
| 03/12/1991 | US4999522 Active RC filter circuit for use as a band-stop filter |
| 03/12/1991 | CA1281294C Active attenuation system with on-line modeling of speaker, error pathand feedback path |
| 03/06/1991 | EP0415080A2 Device for converting unbalanced analog electric signals into fully-differential signals |
| 03/06/1991 | EP0255826B1 Balanced differential load |
| 03/05/1991 | US4998074 Transistor circuit with base-current compensation |
| 02/27/1991 | EP0413934A2 Transmission line frequency equalizer |
| 02/26/1991 | US4996504 Monolithically integratable microwave attenuation element |
| 02/26/1991 | US4996447 Field-effect transistor load circuit |
| 02/26/1991 | US4995808 Carbon desorption heater |
| 02/19/1991 | US4994774 Integrated low-pass filter arrangement |
| 02/19/1991 | US4994773 Digitally controlled monolithic active phase shifter apparatus having a cascode configuration |
| 02/19/1991 | US4994759 Current equalizing circuit |
| 02/19/1991 | US4994755 Active balun |
| 02/19/1991 | US4994693 Second order active filters |
| 02/12/1991 | US4992752 Method and apparatus for broadband impedance matching |
| 02/05/1991 | US4990872 Variable reactance circuit producing negative to positive varying reactance |
| 01/30/1991 | EP0410536A2 Combined current differencing and operational amplifier circuit |
| 01/29/1991 | CA1279581C Automatic dynamic equalizing |
| 01/23/1991 | EP0409322A1 Filter circuit comprising an amplifier and a capacitor |
| 01/22/1991 | US4987378 Feedforward predistortion linearizer |
| 01/17/1991 | DE3924049C1 High pass filter separating out wideband AC voltage - has capacitor and earthed resistor as filter unit coupled to diode circuit via amplifier |
| 01/16/1991 | EP0408323A2 Discrete increment signal processing system and method using parallel branched N-state networks |
| 01/15/1991 | US4985685 Detector circuit including current attenuating circuit and capacitor |
| 01/09/1991 | CN1011185B Nonlinear signal processing apparatus |
| 01/08/1991 | US4984292 Bandpass amplifier and receiver using bandpass amplifier |
| 01/02/1991 | EP0405319A1 Delay circuit having stable delay time |
| 12/27/1990 | EP0404150A2 Circuit arrangement for matching the resonant frequency of an antenna resonant circuit to the output frequency of a transmitter output stage |
| 12/27/1990 | CA1278377C Track following servo for higher density disk files |
| 12/25/1990 | US4980687 Digital demodulator |
| 12/25/1990 | US4980656 Active input impedance tuner for compensating for power loss |
| 12/25/1990 | US4980651 High speed, high precision operational amplifier |
| 12/19/1990 | EP0402873A2 Filter apparatus |
| 12/18/1990 | US4979218 Balanced output circuit |
| 12/18/1990 | CA1278054C Filter adjustment apparatus and method |
| 12/18/1990 | CA1278053C Filter adjustment apparatus and method |
| 12/18/1990 | CA1278052C Filter circuit |
| 12/18/1990 | CA1277918C Circuits to provide desired conductance characteristics using a fet |
| 12/13/1990 | DE3919092A1 Adjusting resistance value in dependence on voltage - short circuiting one of two resistors in series in time steps until attaining voltage allocated value |
| 12/12/1990 | EP0401632A2 Method and apparatus for broadband impedance matching |
| 12/04/1990 | US4975604 Automatic return-loss optimization of a variable fet attenuator |
| 11/29/1990 | WO1990014714A1 Semiconductor device including an activated filter in the area of high and ultra high frequencies |
| 11/27/1990 | US4973857 Current divider circuit |
| 11/27/1990 | CA1276992C Electronically controlled matching circuit |
| 11/22/1990 | EP0398442A1 Semiconductor device including an active filter in the high- and ultra-high frequency domain |
| 11/22/1990 | EP0398039A2 An attenuator circuit |
| 11/22/1990 | EP0397945A2 Variable impedance circuit |
| 11/20/1990 | US4972098 Integrated variable resistor circuit having MOS transistors |
| 11/13/1990 | US4970478 Matched microwave variable attenuator |
| 11/07/1990 | EP0396351A2 Balanced output circuit |
| 11/06/1990 | US4969050 Circuit arrangement for distributing an antenna signal to two appliances |
| 11/06/1990 | US4968901 Integrated circuit high frequency input attenuator circuit |
| 11/01/1990 | WO1990013175A1 Tunable resonance amplifier |
| 11/01/1990 | CA2015236A1 Balanced output circuit |
| 10/31/1990 | EP0395118A1 Analog signal delay circuit |
| 10/31/1990 | EP0394703A2 A circuit arrangement for enhancing the transconductance of a differential amplifier stage comprising MOS transistors |
| 10/30/1990 | US4967169 FET monolithic microwave integrated circuit variable slope gain-equalizer |
| 10/24/1990 | EP0393717A2 Active filter circuit |
| 10/23/1990 | US4965607 Antenna coupler |
| 10/18/1990 | WO1990012454A1 Gyrator circuits |
| 10/16/1990 | US4963845 Synthesis of electrical impedances |
| 10/03/1990 | EP0390226A1 Jitter absorption circuit |
| 10/03/1990 | EP0390076A1 Integratable band-pass filter |
| 10/03/1990 | CN1045901A Impedance converter |
| 10/02/1990 | US4961057 Automatic gain control amplifier for compensating cable loss |
| 09/26/1990 | EP0388890A2 Reactance control circuit with a DC amplifier for minimizing a variation of a reference reactance value |
| 09/25/1990 | US4959873 Transmission line switch |
| 09/19/1990 | EP0387949A1 Integrated semiconductor device with an active insulator circuit |
| 09/11/1990 | US4956720 Jitter control circuit having signal delay device using CMOS supply voltage control |
| 08/29/1990 | EP0384501A1 Variable resistor in MOS-technology |
| 08/28/1990 | US4952893 Attenuating circuit |
| 08/28/1990 | US4952891 Filter circuit with automatic tuning |
| 08/28/1990 | US4952867 Base bias current compensator |
| 08/22/1990 | EP0383325A2 Automatic adjusting circuit for an analog filter |
| 08/21/1990 | US4951003 Differential transconductance circuit |
| 08/21/1990 | US4951000 Wide-band phase shifter |
| 08/21/1990 | CA1273063A1 Adjustable impedance driver network |
| 08/16/1990 | EP0382518A2 Multi-feedback circuit apparatus |
| 08/16/1990 | DE4001747A1 Adaptable high pass filter assembly - has controllable cut=off frequency, and passes selectively signal components of higher frequencies |
| 08/07/1990 | US4947141 Oscillator network for radio receiver |
| 07/31/1990 | US4945311 Electronically variable equalizer |
| 07/31/1990 | CA1272248A1 Fm receivers using three-terminal negative admittance networks of two and three-terminal negative admittance networks |
| 07/31/1990 | CA1272247A1 Fm receivers using two-terminal negative admittance networks |
| 07/26/1990 | DE3901314A1 Circuit arrangement for simulating a variable impedance, particularly an ohmic resistance |