Patents
Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272)
08/1996
08/06/1996US5543752 Microwave amplifier circuit having reduced harmonic distortion
08/06/1996US5543751 Power combiner for use in a radio frequency system and a method of constructing a power combiner
08/06/1996US5543745 Voltage controlled current source and bias generation circuit using such current source
08/06/1996CA2077155C Apparatus for controlling consumption power for gaas fet
07/1996
07/30/1996US5542096 Method for a transmitter to compensate for varying loading without an isolator
07/30/1996US5541555 High performance transconductance operational amplifier of the CMOS integrated type
07/30/1996US5541554 Multi-mode power amplifier
07/30/1996US5541553 Amplifier with a function for switching on and off the output signal
07/25/1996WO1996011528A3 Amplifier arrangement
07/24/1996EP0722626A1 Signal conditioning apparatus and method exhibiting accurate input impedance and gain characteristics over common mode range and operational environments
07/24/1996EP0722625A1 Feedforward amplifier for minimizing distortion
07/24/1996CN1127443A Grounded-base transistor amplifier
07/17/1996EP0722216A2 Split-path linear isolation circuit apparatus and method
07/17/1996EP0605570B1 Active biasing control for class-ab cmos operational amplifiers
07/17/1996EP0307465B1 Semiconductor emulation of tube amplifiers
07/17/1996CN1126905A Power amplifier stage of the voltage follower type
07/16/1996US5537081 No turn-on pop noise amplifier
07/16/1996US5537080 Gain stability arrangement for HV MOSFET power amplifier
07/16/1996US5537079 Integrated-circuit (IC) amplifier with plural complementary stages
07/16/1996US5537078 Operational amplifier with JFET inputs having low input bias current and methods for using same
07/11/1996WO1996021271A1 Open-loop, differential amplifier with accurate and stable gain
07/09/1996US5535438 Phase linear class E amplifier for a satellite communication terminal which communicates with a low earth orbiting satellite
07/09/1996US5535273 Circuitry for superimposing small, low energy signals and large, essentially higher energy signals
07/09/1996US5535082 Turn-on control circuit for electric devices
07/09/1996US5534820 Compensating for non-linear effects in signal processing with active devices
07/09/1996US5534816 Programmable transducer amplifier circuit
07/09/1996US5534813 Anti-logarithmic converter with temperature compensation
07/09/1996US5534810 Power stage bias circuit with improved efficiency and stability
07/09/1996CA2056701C Fet amplifier with gate voltage control
07/04/1996DE19534065A1 Voltage amplifier stage
07/03/1996EP0720354A2 Power stage bias circuit with improved efficiency and stability
07/03/1996EP0720296A2 Buffer circuit and bias circuit
07/03/1996EP0720284A1 Feedforward amplifier
07/02/1996US5532655 Method and apparatus for AC/DC signal multiplexing
07/02/1996US5532650 High-frequency amplifier
07/02/1996US5532649 Speaker resistance sensing and power limit setting circuit
07/02/1996US5532648 Radio frequency amplifiers with compensation signal to accommodate changes in the conduction point due to temperature changes
07/02/1996US5532646 High frequency power amplifier
07/02/1996US5532645 Circuit for controlling the rise of the output voltage of an amplifier at start up
07/02/1996US5532644 Variable gain amplifying circuit
07/02/1996US5532642 Feedforward-type distortion compensation circuit
07/02/1996US5532637 Linear low-noise mixer
07/02/1996US5532578 Reference voltage generator utilizing CMOS transistor
07/02/1996US5532558 Protection circuit for dynamic focus amplifier
07/02/1996CA2069990C Rf power amplifier
06/1996
06/27/1996WO1996019865A2 An amplifying circuit
06/27/1996WO1996019864A1 Receiver circuit
06/26/1996EP0718968A1 Amplifier having common mode large swing and constant transconductance
06/26/1996EP0718967A2 Method and apparatus for nonlinear compensation
06/26/1996EP0718966A1 Amplifier circuit
06/26/1996EP0718965A1 Class A high frequency amplifier and receiver with at least such an amplifier
06/26/1996CN1125497A A method for a transmitter to compensate for varying loading without an isolator
06/25/1996US5530444 Differential amplifiers which can form a residue amplifier in sub-ranging A/D converters
06/20/1996WO1996019040A1 Low voltage linear output buffer operational amplifier
06/19/1996EP0717504A2 Radio transmitters and methods of operation
06/19/1996EP0717492A1 RF power amplifier with increased efficiency at low power
06/19/1996EP0717334A2 Circuit for providing a compensated bias voltage
06/19/1996EP0716783A1 Amplifier stage with a db-linear output voltage
06/19/1996CN2229731Y Apparatus for cancelling parasitic oscillation and lowering harmonic impedance
06/18/1996US5528532 Distortion circuits for improving distortion effects to audio data
06/18/1996US5528509 Method of designing a high-frequency circuit
06/18/1996US5528196 Linear RF amplifier having reduced intermodulation distortion
06/18/1996US5528189 Noise performance of amplifiers
06/12/1996EP0716526A2 Method of producing modulating waveforms with constant envelope
06/12/1996EP0716505A1 Amplifier circuit arrangements
06/12/1996EP0716504A1 Amplifier circuit arrangements
06/12/1996EP0716503A1 Amplifier with reduced distortion
06/12/1996EP0716502A1 Integrated-circuit (IC) amplifier with plural complementary stages
06/12/1996EP0715781A1 Regenerative amplifier circuit
06/12/1996EP0198009B1 Current source with adjustable temperature coefficient
06/12/1996CN1124423A Power amplifier and radio transmitter
06/11/1996US5525934 Output circuit with short circuit protection for a CMOS comparator
06/11/1996US5525930 Frequency compensation circuit for stabilizing a differential amplifier with cross-coupled transistors
06/11/1996US5525929 Transimpedance amplifier circuit with feedback and load resistor variable circuits
06/07/1996CA2164465A1 Converter for converting a modulating signal with variable envelope to two modulating signals without variable envelope, transmitter using the converter and method for transmitting a modulated wave with variable envelope
06/05/1996EP0715404A1 Impedance matching circuit
06/04/1996USRE35261 Differential input amplifier stage with frequency compensation
06/04/1996US5524286 Baseband predistortion system for the adaptive linearization of power amplifiers
06/04/1996US5524285 Radio transmitter with power amplifier and linearization
06/04/1996US5524171 Device for the processing and pre-correction of an audio signal before it is amplified in an amplification system of a transmitter with amplitude modulation
06/04/1996US5524074 Digital signal processor for adding harmonic content to digital audio signals
06/04/1996US5524055 Solid state circuit for emulating tube compression effect
06/04/1996US5523717 Operational transconductance amplifier and Bi-MOS multiplier
06/04/1996US5523716 Microwave predistortion linearizer
06/04/1996US5523712 Resistor array circuit device and variable gain device utilizing same
06/04/1996CA2074126C High-frequency power amplifier
05/1996
05/31/1996CA2164056A1 Impedance matching circuit
05/30/1996WO1996016476A1 High speed overvoltage detection and protection circuit
05/30/1996DE4441021A1 Intermodulation distortion reduction circuit in broad band nonlinear network or component
05/29/1996EP0714165A1 Amplifier with multiple switched stages
05/29/1996EP0714164A2 Modular linear feed-forward amplifier
05/29/1996EP0714055A1 Proportional to absolute temperature current source
05/28/1996US5521554 High-frequency band amplifier system
05/28/1996US5521549 Stabilization of closed-loop power controllers
05/28/1996US5521489 Overheat detecting circuit
05/28/1996CA2083954C Feed forward amplifier network with frequency swept pilot tone
05/23/1996WO1996015586A1 Wafer-stage temperature compensation for ic components
05/23/1996DE19505269C1 Transistor working current stabilisation circuit
05/22/1996EP0713289A1 Amplifier with multiple switched stages
05/21/1996US5519886 Method and apparatus for controlling device temperature during transmissions