Patents
Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272)
05/1996
05/21/1996US5519353 Balanced driver circuit for eliminating inductive noise
05/17/1996WO1996014691A1 Method and apparatus for a linear transmitter
05/15/1996DE4440216A1 HF signal distribution circuit
05/14/1996US5517684 Radio communication system having current control circuit
05/14/1996US5517154 Split-path linear isolation circuit apparatus and method
05/14/1996US5517149 Gain linearity correction circuit for MOS circuits
05/14/1996US5517148 Low current differential level shifter
05/09/1996DE4439826A1 Signal amplification method e.g. for HF transmitter
05/09/1996DE19540893A1 Referenzspannungserzeugungsschaltung mit einer Kompensationsfunktion gegenüber Variationen der Temperatur und der Versorgungsspannung Reference voltage generating circuit having a compensation function to variations in temperature and supply voltage
05/08/1996EP0710411A1 A method for a transmitter to compensate for varying loading without an isolator
05/07/1996US5515431 Speakerphone device with auxiliary circuit for eliminating clicking at power-on
05/07/1996US5515224 Limitation of current absorption under short-to-plus unpowered conditions of the output node of an amplifier
05/07/1996US5515006 Low distortion efficient large swing CMOS amplifier output
05/07/1996US5515005 Operational amplifier
05/07/1996US5515000 Feed-forward amplifier of a type preventing unwanted waves from being outputted in the initial operation
05/07/1996US5514992 Low-distortion cascode circuit
05/07/1996US5514950 Differential pair arrangement
05/07/1996US5514949 Current mirror with at least one PNP-transistor
05/07/1996US5514948 Reference voltage generating circuit
05/02/1996WO1996013094A1 Power amplifier with switching power supply
05/01/1996EP0709956A1 Method and circuit for protection against latch-down transistor and voltage regulator using the method
05/01/1996EP0465668B1 Head amplifier
04/1996
04/30/1996US5513389 Push pull buffer with noise cancelling symmetry
04/30/1996US5513094 Switch-mode power supply for bridged linear amplifier
04/30/1996US5512859 Amplifier stage having compensation for NPN, PNP beta mismatch and improved slew rate
04/30/1996US5512858 Amplifier stage with low thermal distortion
04/30/1996US5512856 Method and apparatus for nonlinear compensation
04/30/1996CA2109506C High dynamic range modulation independent feed forward amplifier network
04/30/1996CA2075890C Amplifier system having improved distortion reduction
04/25/1996WO1996012342A1 Am-fm transmitter power amplifier using class-bc
04/24/1996EP0708524A2 Amplifier with multiple switched stages
04/24/1996EP0708523A2 Method and apparatus for compensating thermal time constants in an electronic amplifier
04/24/1996CN1121232A Sampling circuit, signal amplifier, and image display
04/23/1996US5510753 Composite bridge amplifier with output overload and thermal protection
04/23/1996US5510745 High-speed electronic circuit having a cascode configuration
04/23/1996US5510743 Apparatus and a method for restoring an A-level clipped signal
04/23/1996US5510738 CMOS programmable resistor-based transconductor
04/23/1996US5510699 Voltage regulator
04/18/1996WO1996011528A2 Amplifier arrangement
04/16/1996US5509078 Circuit for preventing crosstalk
04/16/1996US5508658 Power amplifier circuit for audio signal and audio device using the same
04/16/1996US5508657 Feed forward cancellation amplifier utilizing dynamic vector control
04/16/1996US5508656 Amplifier with offset correction
04/11/1996WO1996010844A1 Bipolar transistor for use in linear amplifiers
04/10/1996EP0706263A1 Comparator circuit operating on variable current
04/10/1996EP0706261A1 Detector cell for logarithmic amplifiers
04/10/1996EP0706260A1 High efficiency bridge amplifier
04/10/1996EP0706259A1 Automatic calibration of carrier suppression and loop phase in a cartesian amplifier
04/10/1996EP0705499A1 Device for amplifying television signals with a predetermined variable operating class for preventing transmission errors
04/10/1996EP0705498A1 Method and device for signal amplitude modulation
04/10/1996EP0705438A1 Measurement amplifier
04/10/1996EP0705437A1 Measurement amplifier
04/10/1996CN1120266A Circuit for compensating an amplifier
04/09/1996US5507017 Control of attenuation and amplification in foward and feedback paths for power control for cartesian amplifiers
04/09/1996US5507014 Radio transmitter circuit with time dependant inhibited transmissions
04/09/1996US5506546 Method and apparatus for generating transmitting wave
04/09/1996US5506544 Bias circuit for depletion mode field effect transistors
04/09/1996US5506536 Differential amplifier with exponential gain characteristic
04/09/1996US5506532 Output limiter for class-D BICMOS hearing aid output amplifier
04/09/1996US5506526 Offset-compensated sample and hold arrangement and method for its operation
04/09/1996US5506495 Step-down circuit with stabilized internal power-supply
04/09/1996US5506493 Switching regulator and amplifier system
04/09/1996CA2102661C Differential amplifier circuit using quadritail circuit
04/03/1996EP0705010A1 Transmitter with compensation of power amplifier distortion
04/03/1996CN1119801A Power amplifier with clipping level control
04/02/1996US5504456 Low noise wide band amplifier
04/02/1996US5504380 Method and apparatus for controlling a current generator
04/02/1996CA2053476C Power amplifier and mobile radio apparatus with the same
03/1996
03/28/1996DE4433871A1 HF amplifier design with suppression of intermodulation interference for electrical industry and communications equipment
03/27/1996EP0703661A2 An apparatus for biasing a fet with a single voltage supply
03/27/1996CN1119387A Protection circuit for dynamic focus amplifier
03/27/1996CN1119365A Cicuit of voltage limiter
03/26/1996US5502417 Input amplifier circuit
03/26/1996US5501517 Current detecting device with temperature compensating device
03/21/1996WO1996008866A1 Efficient linear power amplification
03/20/1996EP0702410A2 A transistor protection circuit
03/20/1996CN1118953A Wiring structure for semi-bridge type switching power supply power amplifier stage
03/19/1996US5500623 Differential amplifier circuit with almost linear transconductance
03/19/1996US5500621 Travelling-wave tube protection arrangement
03/19/1996CA2120174C Device for testing an amplifier
03/13/1996EP0701321A1 Circuit and method of cancelling leakage current in an analog array
03/13/1996EP0701190A2 CMOS circuit for providing a bandgap reference voltage
03/13/1996EP0700607A1 Predistortion method and apparatus for laser linearization
03/07/1996WO1996007236A1 Active bias for radio frequency power amplifier
03/07/1996WO1995031029A3 A method and apparatus for controlling power for subsystems
03/06/1996EP0700152A1 Impedance matching circuit
03/06/1996EP0700151A1 Power amplifier stage of the follower type
03/06/1996EP0700150A1 Feed-forward amplifier
03/05/1996US5497124 Class AB push-pull drive circuit, drive method therefor and class AB electronic circuit using the same
03/05/1996US5497123 Amplifier circuit having high linearity for cancelling third order harmonic distortion
03/05/1996US5497120 Differential amplifier circuit having a bias circuit with a differential amplifier
02/1996
02/28/1996EP0698311A1 Method for amplitude training in a linear power amplifier
02/27/1996US5495214 Method and apparatus for controlling the operating point of an amplifier stage
02/27/1996US5495201 Transconductor stage
02/27/1996US5495166 MOS transistor threshold voltage generator
02/21/1996EP0697766A1 Buffer circuit with wide dynamic range
02/20/1996US5493705 Transmission control circuit for use in TDMA communication devices
02/20/1996US5493255 Bias control circuit for an RF power amplifier
02/20/1996US5493254 Amplifier including circuit for reducing input capacitance
02/20/1996US5493253 Semiconductor integrated circuit