Patents
Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
06/2002
06/18/2002US6407449 Pin layout of semiconductor integrated circuits including dual band amplifier and receiving mixer
06/18/2002CA2328784A1 Boosted voltage line driver
06/13/2002WO2002047257A1 Driver for an external fet with high accuracy and gate voltage protection
06/13/2002WO2002047256A2 Harmonic matching network for a saturated amplifier
06/13/2002WO2002047255A1 Low fpn high gain capacitive transimpedance amplifier for use with capacitive sensors
06/13/2002WO2002047254A2 Differential amplifier
06/13/2002WO2002047252A2 Self-boosting circuit for a power amplifier
06/13/2002WO2002047251A2 Low noise amplifier having bypass circuitry
06/13/2002WO2002005588A3 Power amplification for parametric loudspeakers
06/13/2002WO2001092977A3 Voltage regulator circuit
06/13/2002WO2001080436B1 Dual-mode communications transmitter
06/13/2002US20020071264 Electric apparatus comprising a shield and transmission means with filtering of an electric signal on both sides of the shield
06/13/2002US20020070809 Low noise amplifier having bypass circuitry
06/13/2002US20020070807 High-frequency amplifier circuit for UHF television tuner having less distortion
06/13/2002US20020070806 Asymmetric trapezoidal gate mosfet and rf amplifier using same
06/13/2002US20020070805 Circuit configuration with an integrated amplifier
06/13/2002US20020070804 Dynamic cascoding technique for operational amplifiers
06/13/2002US20020070801 Differential line driver circuit
06/13/2002US20020070799 Class D digital amplifier
06/13/2002US20020070798 Charge injection reduction technique in single and multi-reference switching amplifiers
06/13/2002US20020070777 Voltage to current converter
06/13/2002US20020070770 Differential line driver circuit
06/13/2002US20020070767 High speed signal window detection
06/13/2002DE10154170A1 Differential amplifier with constant transconductance has 2 differential amplifier units with level shifters, constant current source, output currents interconnected for additional output currents
06/13/2002DE10134561A1 Hochfrequenz-Leistungsverstärker High frequency power amplifier
06/13/2002DE10059170A1 Differential amplifier for measuring voltage, has input channels connected via resistance circuit with signal source and via second resistance with reference potential
06/13/2002DE10058952A1 Circuit for converting analog input signal to corresponding analog output signal has transconductance amplifiers converting input analog voltage signals to output current signals
06/12/2002EP1213724A1 Process-insensitive, highly-linear constant transconductance circuit
06/12/2002EP1212831A1 Impedance adapting amplifier device for low frequency with electronic tubes insertible on line in the path of the low frequency signal
06/12/2002EP0972339B1 Power amplication system with intelligent control of amplifier modules
06/11/2002US6404578 Circuit for reduction and optimization of write-to-read settling times in magnetic medium storage devices
06/11/2002US6404286 Electrical arrangement having improved feedback stability
06/11/2002US6404285 Transistor amplifier that accommodates large input signals
06/11/2002US6404284 Amplifier bias adjustment circuit to maintain high-output third-order intermodulation distortion performance
06/11/2002US6404283 Method and apparatus for amplifying a radio frequency signal
06/11/2002US6404281 Wide dynamic range transimpedance amplifier
06/11/2002US6404280 Method and system for low-distortion power amplification
06/11/2002US6404266 Differential input stage with bias current reduction for latch-up prevention
06/06/2002WO2002045255A1 Amplifier circuit, an optical communication system and a method of controlling amplification
06/06/2002WO2002045254A1 High-frequency amplifier and high-frequency mixer
06/06/2002WO2002045253A1 High-frequency amplifier
06/06/2002WO2002045067A1 Switched amplifier drive circuit for liquid crystal displays
06/06/2002WO2002045066A1 Drive circuit for liquid crystal displays and method therefor
06/06/2002WO2002044797A1 Method and apparatus for uniform brightness in displays
06/06/2002WO2002025810A3 Mmic folded power amplifier
06/06/2002WO2002025809A3 Switching power amplifier
06/06/2002WO2001091281A3 Level shifter for switching power amplifier
06/06/2002US20020067773 Linearized offset QPSK modulation utilizing a sigma-delta based frequency modulator
06/06/2002US20020067310 Antenna element array alignment system
06/06/2002US20020067213 Cascode amplifying circuit and folded cascode amplifying circuit
06/06/2002US20020067212 Micro-wave power amplifier
06/06/2002US20020067211 Power amplifier
06/06/2002US20020067210 Amplifier circuit
06/06/2002US20020067209 Self-boosting circuit for a power amplifier
06/06/2002US20020067208 Transconductance amplifier, filter using the transconductance amplifier and tuning circuitry for transconductance amplifier in the filter
06/06/2002US20020067207 Operational amplifier
06/06/2002US20020067205 Circuit for linearizing electronic devices
06/06/2002US20020067203 Control circuit for increasing the output inpedance of a transconductor
06/06/2002US20020066850 Monolithic loss-of-signal detect circuitry
06/06/2002DE10057844A1 Verfahren zum Abgleichen eines BGR-Schaltkreises und BGR-Schaltkreis A method for adjusting a BGR circuit and BGR circuit
06/06/2002DE10054540A1 Power efficient amplifier circuit and method for power efficient signal amplification employing parallel amplification by two amplifiers with negative feedback
06/05/2002EP1211808A1 Apparatus for pulse width modulating very high frequency signals
06/05/2002EP1211804A1 Driver for an external FET with high accuracy and gate voltage protection
06/05/2002EP1211730A2 Stacked power amplifier module
06/05/2002EP1210764A1 Dynamic switching frequency control for a digital switching amplifier
06/05/2002EP1210744A1 Radio repeater using the non-radiative dielectric waveguide
06/05/2002EP1075732B1 A method in the compensation of unlinearities in an amplifier, an amplifier, and uses of the method and the amplifier
06/05/2002EP0870360A4 Differential amplifier with improved low-voltage linearity
06/04/2002US6400936 Low-noise lossless feedback double-balanced active mixers
06/04/2002US6400933 Amplifier
06/04/2002US6400301 amplifying signals in switched capacitor environments
06/04/2002US6400229 Low noise, low distortion RF amplifier topology
06/04/2002US6400227 Stepped gain controlled RF driver amplifier in CMOS
06/04/2002US6400226 Distributed amplifier with improved flatness of frequency characteristic
06/04/2002US6400225 Differential difference amplifier for amplifying small signals close to zero volts
06/04/2002US6400224 Two stage low noise amplifier
06/04/2002US6400220 Autotracking feedback circuit and high speed A/D converter using same
06/04/2002US6400219 High-speed offset comparator
06/04/2002US6400217 Integrated circuit having a filter with charge balancing scheme to reduce transient disturbances
06/04/2002US6400207 Quick turn-on disable/enable bias control circuit for high speed CMOS opamp
06/04/2002US6400187 Precision, low-power transimpedance circuit with differential current sense inputs and single ended voltage output
05/2002
05/30/2002WO2002043242A1 Differential amplifier having active load device scaling
05/30/2002WO2002043241A1 Lineariser
05/30/2002WO2002043156A2 Hemt and communication system using the same
05/30/2002WO2002042856A1 Method for adjusting a bgr circuit
05/30/2002WO2002001708A3 Digital trimming of op amp offset voltage and quiescent current using non-volatile memory
05/30/2002WO2001097373A3 Multiple output current mirror with improved accuracy
05/30/2002WO2001089082A3 An ultra linear high frequency transconductor structure
05/30/2002US20020065634 DC offset compensation
05/30/2002US20020064029 Stacked power amplifier module
05/30/2002US20020063937 Optical receiving apparatus
05/30/2002US20020063603 High frequency power amplifier
05/30/2002US20020063602 High-frequency power amplifier
05/30/2002US20020063601 Semiconductor device with bipolar transistor device
05/30/2002US20020063600 High-frequency circuit
05/30/2002US20020063599 Efficient all NPN high output class AB output stage with latchup free boosting scheme
05/29/2002EP1209740A2 Equipment for communication system and semiconductor integrated circuit device
05/29/2002DE10152929A1 Optical disk scanning system uses current mode signal transmission of signals obtained from scanned disk
05/29/2002CN1351416A High-quality audio amplifier
05/29/2002CN1085907C Charge-sensitive amplifier circuit