Patents
Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272)
02/1997
02/06/1997CA2200077A1 Power combiner for use in a radio frenquency system and a method of constructing a power combiner
02/05/1997EP0756781A1 Negative-resistance-compensated microwave buffer
02/05/1997CN1142137A Amplifying circuit with function of reducing load reactance influence
02/04/1997US5600575 Drive protection monitor for motor and amplifier
02/04/1997US5600472 Distortion generating circuit
02/04/1997US5600278 Programmable instrumentation amplifier
02/04/1997US5600275 Low-voltage CMOS comparator with offset cancellation
02/04/1997US5600064 Electronics for coriolis force and other sensors
01/1997
01/29/1997EP0756431A2 Power shared linear amplifier network
01/29/1997EP0756380A1 Pulse width modulation & protection circuit
01/29/1997CN1141536A Grounded inductance circuit using gyrator circuit
01/28/1997US5598436 Digital transmission system with predistortion
01/28/1997US5598127 Procedure and circuit for adaptive compensation of the gain distortions of a microwave amplifier with linearizer
01/28/1997US5598117 MOS differential voltage-to-current converter circuit with improved linearity
01/23/1997WO1997002655A1 Method and apparatus for amplifying an electrical signal
01/23/1997WO1997002653A1 Output stage for buffering signals
01/22/1997CN1140931A Method and apparatus for amplifying signal
01/21/1997US5596646 Audio tape saturation simulator
01/15/1997EP0753936A1 Audio signal transmission circuit
01/15/1997EP0753935A1 Signal amplifier
01/14/1997US5594387 Amplifier circuit having nagative feedback loop for self-bias
01/14/1997US5594385 Ultra-linear feedforward amplifier with adaptive control and method for adaptive control
01/14/1997US5594375 Electrical power amplifier for continuous cardiac output monitoring
01/09/1997WO1996031947A3 Offset-compensated linear rf detector
01/07/1997US5592124 Integrated photodiode/transimpedance amplifier
01/07/1997US5592123 Frequency stability bootstrapped current mirror
01/02/1997EP0751614A1 Cuber based predistortion circuit and mobile station using the same
01/02/1997DE19524037A1 HF power amplifier for TV-transmitter
01/01/1997CN1139320A Transmitter having temperature-compensated detector
01/01/1997CN1139213A Split-path linear isolation circuit apparatus and method
12/1996
12/31/1996US5589881 Enhanced performance CCD output amplifier
12/31/1996US5589797 Low distortion amplifier
12/31/1996US5589796 Method and apparatus for increasing amplifier efficiency
12/31/1996US5589785 Low-voltage CMOS comparator
12/31/1996US5589762 Adaptive voltage regulator
12/27/1996WO1996042135A1 A low-voltage rail-to-rail operational amplifier
12/27/1996WO1996031946A3 A linearizer for linearizing a non-linear component controlled by control voltage
12/27/1996EP0750391A2 Wide-band amplifier
12/27/1996EP0642681B1 Method and apparatus for controlling a current generator
12/24/1996US5587689 Voltage controlled amplifier with a negative resistance circuit for reducing non-linearity distortion
12/19/1996WO1996031945A3 An amplifier stage having a switchable gain and reduced distortion
12/18/1996EP0564490A4 Improved switching amplifier
12/17/1996US5585762 Arrangement for controlling the operation of a high-frequency power amplifier
12/17/1996CA2079017C Differential amplifier arrangement
12/17/1996CA2069476C An apparatus and method for varying a signal in a transmitter of a transceiver
12/11/1996EP0748040A1 Gain stability arrangement for HV MOSFET power amplifier
12/11/1996EP0746902A1 Predistorter for high frequency optical communications devices
12/10/1996US5583465 Method and apparatus for improving the speed and accuracy of a circuit utilizing a feedback amplifier configuration
12/05/1996WO1996038906A1 Minimum power-consumption amplifier
12/04/1996EP0746096A1 Grounded inductance circuit using gyrator circuit
12/04/1996EP0746094A1 Offset error compensation system for an operational amplifier
12/04/1996EP0746093A1 Operational amplifier
12/04/1996EP0745923A2 Voltage regulator with load pole stabilization
12/04/1996EP0745285A1 An amplifying circuit
12/04/1996EP0581799B1 Adaptive phase control for a power amplifier predistorter
12/04/1996CN1137198A High-efficient configurable power amplifier for use in portable unit
11/1996
11/28/1996WO1996037951A1 Switched capacitor offset suppression
11/28/1996WO1996037949A1 A cartesian loop transmitter
11/28/1996WO1996037948A1 Methods and apparatus for modulating, demodulating and amplifying
11/28/1996CA2222091A1 Methods and apparatus for modulating, demodulating and amplifying
11/27/1996EP0744725A1 Input circuit for the acquisition, evaluation or processing of a sensor signal
11/27/1996EP0744096A1 Low noise wide band amplifier
11/27/1996CN1136751A Distoriton compensating circuit
11/26/1996US5579342 Pre-compensated frequency modulation (PFM)
11/26/1996US5578967 Circuit compensating for capacitance at inverting input of current feedback amplifier
11/26/1996US5578963 Integrated amplifier with flat gain for high and low impedance loads
11/26/1996US5578962 Instrumentation amplifier for sensor signal conditioning using low-cost, high-accuracy analog circuitry
11/26/1996US5578956 Circuit for limiting the maximum current value supplied to a load by a power MOS at power-up
11/26/1996US5578916 Dual voltage voltage regulator with foldback current limiting
11/21/1996WO1996037046A1 Fast comparator
11/21/1996DE19517608A1 Circuit for improved control of broadband amplifiers
11/20/1996CN1136370A Switch-mode power supply for a bridged linear amplifier
11/19/1996US5577129 Amplifier circuit for electret condenser microphone
11/19/1996US5576920 Electrostatic destruction preventing circuit and receiving apparatus having the same
11/19/1996US5576723 VGA signal converter for converting VGA color signals to VGA monochrome signals
11/19/1996US5576663 Wideband gain stable amplifier
11/19/1996US5576662 For amplifying a received signal
11/19/1996US5576660 Broadband predistortion linearizer with automatic temperature compensation for microwave amplifiers
11/19/1996US5576659 Method and apparatus for signal processing using reference signals
11/14/1996WO1996036106A2 Feedback amplifier with improved speed and accuracy
11/14/1996WO1996036105A1 High efficiency multiple power level amplifier circuit
11/14/1996DE19619247A1 Air flow meter of thermal resistance type for measuring air flow rate
11/13/1996EP0742590A2 Method and circuit for preventing forward bias of a parasitic diode in an integrated circuit
11/13/1996EP0741881A1 Integrated circuit
11/12/1996US5574992 Method and apparatus for reducing off-channel interference produced by a linear transmitter
11/12/1996US5574967 Waste energy control and management in power amplifiers
11/12/1996US5574792 Volume and tone control circuit for acoustic reproduction sets
11/12/1996US5574678 Continuous time programmable analog block architecture
11/12/1996US5574400 Feedforward amplifier with reduced distortion in wide band
11/07/1996DE19617832A1 Verfahren und Schaltung zur Ansteuerung von Leistungstransistoren in einer Halbbrücken-Konfiguration Method and circuit for driving power transistors in a half bridge configuration
11/06/1996EP0740860A1 High speed overvoltage detection and protection circuit
11/05/1996US5572416 Isolated input current sense means for high power factor rectifier
11/05/1996US5572165 Amplifier arrangements
10/1996
10/31/1996DE19616803A1 Nonlinear distortion compensation unit
10/31/1996DE19514450A1 Power amplifier for LF signal
10/30/1996CN1134624A Differential amplifying apparatus
10/29/1996US5570427 Muting control circuit
10/29/1996US5570424 Sound effector capable of imparting plural sound effects like distortion and other effects
10/29/1996US5570065 Active bias for radio frequency power amplifier
10/29/1996US5570063 RF power amplifier with signal predistortion for improved linearity