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)
09/2003
09/23/2003US6624692 Radio frequency amplifier with a waveguide filter for isolating amplifying elements
09/23/2003US6624509 Semiconductor device
09/18/2003WO2003077496A1 Frequency-dependent magnitude pre-distortion for reducing spurious emissions in communication networks
09/18/2003WO2003077495A1 Frequency-dependent magnitude pre-distortion of non-baseband input signals for reducing spurious emissions in communication networks
09/18/2003WO2003077494A1 Eer (envelope elimination and restoration) technology transmission amplifier
09/18/2003WO2003077418A1 Integrated frequency selectable resonant coupling network and method thereof
09/18/2003WO2003077415A1 Front stage amplifier with different modes
09/18/2003WO2002049300A3 Amplitude and phase modulator
09/18/2003WO2002049211A3 Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals
09/18/2003WO2002031969A3 Linear power amplifier bias circuit
09/18/2003US20030176172 Wideband amplifier compensating input capacitance, radio transceiver, semiconductor integrated circuit and wideband amplification method
09/18/2003US20030176170 RF transmitters with saturation detection and correction and methods therefor
09/18/2003US20030174793 Low power and high linearity receivers with reactively biased front ends
09/18/2003US20030174019 Predistortion type distortion compensation amplification apparatus
09/18/2003US20030174018 Circuit comprising amplifiers connected in parallel, and a method of reducing the difference in amplitude between output signals from amplifiers thereof
09/18/2003US20030174017 Feedforward amplifier circuitry
09/18/2003US20030174012 Bias circuit
09/18/2003US20030174011 Method of stabilization of operating conditions in electronic devices
09/18/2003US20030173904 Matrix element precharge voltage adjusting apparatus and method
09/17/2003EP1345321A1 A circuit comprising amplifiers connected in parallel, and a method of reducing the difference in amplitude between output signals from amplifiers thereof
09/17/2003EP1345320A2 Amplifier and tuner
09/17/2003EP1345319A2 Method and system for reducing non-linearities
09/17/2003EP1345318A1 Device for the reduction of non linear distortion in an output signal of an amplifierstage
09/17/2003EP1344312A2 Linearized class c amplifier with dynamic biasing
09/17/2003EP1092274B1 A predistorter
09/17/2003EP1010237B1 High-order multipath operational amplifier with dynamic offset reduction, controlled saturation current limiting, and current feedback for enhanced conditional stability
09/17/2003CN1443395A Apparatus and method for efficiently amplifying wideband envelope signals
09/17/2003CN1442959A Power servo ring, radio frequency signal amplifying circuit and radio frequency signal emitter
09/17/2003CN1442536A Washing machine and sound volume control method of its music
09/16/2003US6622117 EM algorithm for convolutive independent component analysis (CICA)
09/16/2003US6621351 RF amplifier and method therefor
09/16/2003US6621350 Switched supply for operational amplifier
09/16/2003US6621349 Power supply noise compensation amplifier
09/16/2003US6621348 Variable gain amplifier with autobiasing supply regulation
09/16/2003US6621340 System for reducing adjacent-channel interference by pre-linearization and pre-distortion
09/16/2003US6621337 Power-efficient amplifier circuit and process for power-efficient amplification of a signal
09/16/2003US6621336 Over-current protection technique
09/16/2003US6621334 Frequency-compensated, multistage amplifier configuration and method for operating a frequency-compensated amplifier configuration
09/16/2003US6621333 Circuit and method to counter offset voltage induced by load changes
09/12/2003WO2003075456A1 Mute circuit for preventing pop noise, and speaker drive circuit
09/12/2003WO2003075455A2 Amplifier circuits and their use in radio frequency transmitters
09/12/2003WO2003075452A2 Method of adjusting gain and current consumption of a power amplifier circuit while maintaining linearity
09/12/2003WO2002056647A3 Circuit for linearizing electronic devices
09/12/2003WO2002029969A3 Power control of switched-mode power amplifiers with one or more stages
09/11/2003US20030171109 Integrated frequency selectable resonant coupling network and method thereof
09/11/2003US20030169829 Frequency-dependent magnitude pre-distortion of non-baseband input signals for reducing spurious emissions in communication networks
09/11/2003US20030169123 In-band group delay equalizer and distortion compensation amplifier
09/11/2003US20030169119 Signal modulation
09/11/2003US20030169115 Transconductor tuning circuit
09/11/2003US20030169110 Predistortion circuit, low-distortion power amplifier, and control methods therefor
09/11/2003US20030169108 High power amplifier predistorter system
09/11/2003US20030169107 Method and system for proportional plus integral loop compensation using a hybrid of switched capacitor and linear amplifiers
09/11/2003US20030169104 Miller de-compensation for differential input, differential output amplifier
09/11/2003US20030169103 Switching power amplifier, and switching control method for a switching power amplifier
09/11/2003US20030169094 Exponential current source to linearize an output power control profile of a power amplifier
09/11/2003US20030169080 Transconductor having structure of crossing pairs
09/10/2003EP1343218A2 In-band group delay equalizer and distortion compensation amplifier
09/10/2003EP1264395B1 Improved method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio
09/10/2003EP1258079B1 System for pre-distorting an input signal for a power amplifier using non-orthogonal coordinates
09/10/2003EP1166435B1 Non-linear distortion generator
09/10/2003EP1016210B1 Signal processing system
09/10/2003CN1441546A 光接收电路 Light receiving circuit
09/10/2003CN1441545A 功率放大器 PA
09/10/2003CN1121092C Method and arrangement for correcting phase error in linearization loop of power amplifier
09/09/2003US6617931 Two-stage amplifier
09/09/2003US6617930 Power supply circuit for transmitter
09/09/2003US6617929 Full output matching apparatus of a microwave doherty amplifier
09/09/2003US6617928 Configurable power amplifier and bias control
09/09/2003US6617927 High frequency power amplifier module, and wireless communications system
09/09/2003US6617924 Operational amplifier having large output current with low supply voltage
09/09/2003US6617923 Linear transconductance amplifier
09/09/2003US6617920 Linear envelope tracking RF power amplifier with adaptive analog signal processing
09/09/2003US6617919 RF amplifier
09/04/2003WO2003073627A1 High-frequency power amplifier circuit and electronic part for communication
09/04/2003WO2003073605A1 High-frequency amplifier
09/04/2003WO2003073604A2 Dynamic bias controller for power amplifier circuits
09/04/2003WO2003073603A2 Current modulator with dynamic amplifier impedance compensation
09/04/2003WO2003073508A1 Circuit for generating a reference voltage having low temperature dependency
09/04/2003WO2003003565A3 A transmitter control circuit
09/04/2003WO2002056460A3 Apparatus and methods for monitoring and controlling power amplifier linearity using detected fundamental and harmonic components
09/04/2003WO2002054584A3 Feedforward amplifier
09/04/2003WO2002015387A3 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
09/04/2003US20030167152 Testing linearity of methods of chemical analysis
09/04/2003US20030164736 High efficiency amplifier
09/04/2003US20030164735 Method of adjusting gain and current consumption of a power amplifier circuit while maintaining linearity
09/04/2003US20030164734 Electric field intensity detecting circuit and limiter amplifier
09/04/2003US20030164732 Tuning feed-forward amplifiers and the like
09/03/2003EP1341303A1 High-frequency amplifier and high-frequency mixer
09/03/2003EP1341302A2 Btl amplifying system
09/03/2003EP1341300A1 Power amplifier with an adjustable quiescent current
09/03/2003EP1341299A1 Power detection in an amplification device
09/03/2003EP1340314A1 Linearization method and amplifier arrangement
09/03/2003EP1190482B1 Method for designing integrated amplifier circuits with reduced noise
09/03/2003CN1440589A RF power amplifier having high power added efficiency
09/03/2003CN1120573C Circuit device for deviation compensation
09/03/2003CN1120566C Frequency hopping and pilot frequency technology using for control system for distortion generated from reducing circuit
09/02/2003US6615028 System and method for selecting amplifiers in a communications device
09/02/2003US6614311 Micro-wave power amplifier
09/02/2003US6614310 Zero-overhead class G amplifier with threshold detection
09/02/2003US6614309 Dynamic bias controller for power amplifier circuits
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