Patents
Sitemap › H03 - Basic electronic circuitry › H03F - Amplifiers › H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272)
11/1991
11/12/1991US5065112 Amplification circuit with improved linearity
11/12/1991US5065110 Feed-forward amplifier including phase correction
11/12/1991US5065043 Biasing circuits for field effect transistors using GaAs FETS
11/10/1991WO1992004769A1 Power amplifier with current limiting means
11/10/1991CA2064052A1 Power amplifier with current limiting means
11/06/1991EP0455570A1 Very wide bandwidth amplifier device for DC to microwave frequencies, particularly in the form of an integrated circuit
11/06/1991EP0455436A2 Electrical interface circuit
11/06/1991EP0455409A1 Solid state RF power amplifier having improved efficiency and reduced distortion
11/06/1991EP0454972A2 A high gain differential-to single ended amplifier having a tee network feedback loop
11/06/1991EP0454812A1 Improvements in or relating to amplifiers
11/05/1991US5063597 Muting circuit in a digital audio system
10/1991
10/31/1991WO1991016764A1 Low current switched capacitor circuit
10/31/1991WO1991016761A1 A wide-band active rf-circuit
10/31/1991WO1991016760A1 Apparatus and method for reducing distortion in amplification
10/30/1991EP0454329A1 A circuit for the elimination of spurious response in a radio telephone receiver
10/30/1991EP0454253A1 Current amplifier arrangement
10/30/1991EP0454091A2 Input/output protection circuit and semiconductor device having the same
10/30/1991EP0453541A1 Rf wideband high power amplifier
10/30/1991EP0453535A1 Improvements in or relating to amplifiers
10/30/1991CN1055851A Apparatus for driving mechanical resonator from high impedance source
10/29/1991US5061903 High voltage modified cascode circuit
10/29/1991US5061902 Linear amplifier
10/29/1991US5061901 Circuit arrangement for increasing the gain-bandwidth product of a cmos amplifier
10/23/1991EP0453034A1 Distortion compensated differential circuit
10/22/1991US5059923 Fractional load current detector
10/22/1991US5059922 High speed low offset CMOS amplifier with power supply noise isolation
10/22/1991US5059921 Amplifier having two operating modes
10/22/1991US5059920 CMOS amplifier with offset adaptation
10/22/1991US5059919 Amplifying apparatus with a differential amplifier stage
10/16/1991EP0451909A2 Predistortion linearizer for microwave power amplifiers
10/16/1991EP0451751A2 Apparatus for driving a mechanical resonator from a high impedance source
10/15/1991US5057790 High efficiency class A amplifier
10/15/1991US5057789 Class AB CMOS amplifier
10/15/1991US5057787 Variable gain differential amplifier
10/10/1991DE4039524A1 Substrate bias generator arrangement - has dual generators for run=up of power and stable supply states
10/08/1991US5055799 Amplifier circuit with non-linear load resistance which increases amplifier forward gain at high frequency
10/08/1991US5055798 Hybrid matrix amplifier systems, and methods for making thermally-balanced hybrid matrix amplifier systems
10/08/1991US5055797 Bias control for power amplifiers
10/08/1991US5055719 Current conveyor circuit
10/02/1991EP0449720A1 Bidirectional transmission active antenna
10/02/1991EP0449441A1 Antisaturation circuit for a bipolar transistor
10/02/1991EP0449200A1 Differential output stage for electronic equipment
10/01/1991US5053770 Digital autozero circuit operable in a plurality of modes with separate storage for offset corrections for each mode
10/01/1991US5053721 High fidelity regenerative amplifier with phase correction circuit
10/01/1991US5053720 Power amplifying circuit
10/01/1991US5053718 Feedback control reducing signal distortion produced by differential amplifier stage
10/01/1991CA1290029C Differential amplifier having controllable power consumption
10/01/1991CA1290028C Asymmetrical dual input amplifier
10/01/1991CA1290027C Rf power amplifier protection
09/1991
09/28/1991CA2038811A1 Bidirectional active transmission antenna
09/25/1991EP0448169A1 Amplifier arrangement
09/24/1991US5051708 Amplifier arrangement with output power boosting
09/24/1991US5051704 Feedforward distortion cancellation circuit
09/18/1991EP0447002A2 Dual path amplitude modulated RF amplifier
09/18/1991EP0446945A2 Electronic equipment incorporating an integrated BTL circuit
09/18/1991EP0446652A1 CMOS transconductance operational amplifier
09/18/1991EP0446407A2 Circuit for preventing crosstalk
09/17/1991US5050235 Transmitter using gallium arsenide FET with means for controlling gate bias voltage of the FET for suppressing undesired signal at a start condition of the transmitter
09/17/1991US5050151 Apparatus for playing back data read out of data tracks on a recorded medium
09/17/1991US5049837 Push-pull transformer coupled RF amplifier with response to DC
09/17/1991US5049835 Modified cascode circuit
09/17/1991US5049834 Amplifier having a constant-current bias circuit
09/17/1991US5049833 Amplifier stage
09/17/1991US5049832 Amplifier linearization by adaptive predistortion
09/17/1991US5049764 Active bypass for inhibiting high-frequency supply voltage variations in integrated circuits
09/17/1991US5049758 Adaptable CMOS winner-take all circuit
09/17/1991CA1289205C Symmetric integrated amplifier with controlled dc offset voltage
09/16/1991CA2038085A1 Dual path amplitude modulated rf amplifier
09/11/1991EP0445879A1 Broadband signal amplifier
09/10/1991US5047732 Wide band amplifier
09/10/1991US5047729 Transconductance amplifier
09/10/1991US5047728 Amplifier having a low noise active GaAs MESFET load
09/10/1991US5047727 Offset-voltage-balancing operational amplifier
09/10/1991US5047666 Fast sample and hold circuit configuration
09/05/1991WO1991013500A1 Ultra-low-power amplifier for a communications receiver with limited access to power
09/05/1991WO1991013491A1 Transistor saturation-preventing circuit
09/05/1991WO1991013459A1 Optically compensated bipolar transistor
09/04/1991EP0444466A1 Balanced microphone preamplifier in CMOS technology
09/04/1991CN1013819B Power amplification circuit of large power tube without overloading
09/03/1991US5045910 Integrated power transistor comprising means for reducing thermal stresses
09/03/1991US5045810 Broadband amplifier with a constant gain and a determined input impedance at high frequency
09/03/1991US5045808 Single-stage high-gain amplifier
09/03/1991US5045805 High precision composite amplifier with improved high speed response
08/1991
08/28/1991EP0443507A2 High-efficiency audio amplifier for use in high fidelity
08/28/1991EP0443484A1 Power link, protected by redundancy, for microwave signals
08/28/1991EP0443368A2 Constant-amplitude wave combination type amplifier
08/27/1991US5043673 Compensating circuit for a high frequency amplifier
08/27/1991US5043608 Correction circuit
08/27/1991US5043601 Wide-band amplifier useful for squarewave signals
08/24/1991CA2036830A1 Microwave signal power link with redundancy protection
08/22/1991WO1991012573A1 Frequency response-compensated circuit
08/21/1991EP0442573A1 Current compensation circuit
08/20/1991US5041797 Micro-power gain lattice
08/20/1991US5041796 Wideband amplifier using FET
08/20/1991US5041794 Voltage to current conversion switching system
08/17/1991WO1991012658A1 Push-pull optical receiver
08/14/1991EP0441580A2 Circuit for reducing distortion produced by an r.f. power amplifier
08/14/1991EP0441579A1 Circuit for reducing distortion produced by an r.f. power amplifier
08/14/1991EP0441549A1 Matched pair of sensor and amplifier circuits
08/14/1991EP0441341A2 Amplifier circuit having feedback circuit
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