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)
11/2003
11/19/2003CN1128505C Method and apparatus for linear transmitter
11/18/2003US6650878 Automatic gain control circuit and receiver having the same
11/18/2003US6650875 Transmitter architecture having a secondary phase-error correction loop including an amplitude reconstruction system
11/18/2003US6650605 Apparatus for scanning optical recording media
11/18/2003US6650181 High-frequency amplifier
11/18/2003US6650180 Totem pole rf amplifiers with phase and amplitude correction
11/18/2003US6650164 Off-leak current cancel circuit
11/13/2003WO2003094343A1 Dual mode power amplifier having a common controller
11/13/2003WO2003094342A2 Radio apparatus comprising an amplifier for radio-frequency signals, amplifier for radio-frequency signals and method for amplifying such signals
11/13/2003WO2003094341A1 Integrated circuit for correcting an offset voltage.
11/13/2003WO2003094202A2 Micro circuits with a sculpted ground plane
11/13/2003WO2002097968A3 Method and apparatus for compensation of second order distortion
11/13/2003WO2002073794A3 Switchless multi-resonant, multi-band power amplifier
11/13/2003WO2002060049A3 Method and apparatus for compensation of cross modulation effects
11/13/2003US20030210182 Video amplifier for a radar receiver
11/13/2003US20030210172 Technique for changing a range gate and radar coverage
11/13/2003US20030210096 N-way RF power amplifier circuit with increased back-off capability and power added efficiency using selected phase lengths and output impedances
11/13/2003US20030210094 AB class amplifier for controlling quiescent current
11/13/2003US20030210093 System and method for reducing amplifier distortion using distortion feedback
11/13/2003US20030210021 Switch mode power supply and driving method for efficient RF amplification
11/12/2003EP1361656A1 Method and device to prevent power-on audio output noise in a wireless telephone handset
11/12/2003EP1360758A2 Circuit arrangement for providing an exponential pre-distortion for an adjustable amplifier
11/12/2003EP1254507B1 Circuit for reducing second and third order intermodulation distortion for a broadband rf amplifier
11/12/2003CN1455984A CMOS power amplifier with reduced harmonics and improved efficiency
11/11/2003US6647073 Linearisation and modulation device
11/11/2003US6646511 Power amplifier with provisions for varying operating voltage based upon power amplifier output power
11/11/2003US6646510 Method of adjusting gain and current consumption of a power amplifier circuit while maintaining linearity
11/11/2003US6646508 Wide bandwidth, current sharing, MOSFET audio power amplifier with multiple feedback loops
11/11/2003US6646506 Method for linearsing high-frequency amplifier
11/11/2003US6646505 Power amplifier array with same type predistortion amplifier
11/11/2003US6646504 Broadband amplifier system having improved linearity and minimum loss
11/11/2003US6646501 Power amplifier configuration
11/11/2003US6646486 Semiconductor integrated circuit
11/11/2003US6646481 Current steering circuit for amplifier
11/11/2003US6646470 High speed output buffers using voltage followers
11/11/2003CA2289133C Frequency selective predistortion in a linear transmitter
11/06/2003WO2003092157A1 Common-base amplifier with high input overload and/or tunable transimpedance
11/06/2003WO2003092156A1 Method for compensating amplifier distortion
11/06/2003WO2003092155A1 Distortion compensation amplifier by digital predistortor method
11/06/2003WO2003092154A1 The method of improving the radio frequency power amplifier efficiency based on the baseband digital pre-distortion technique
11/06/2003WO2003092153A2 Rf power amplifier employing bias circuit topologies for minimization of rf amplifier memory effects
11/06/2003WO2003091845A2 Microarray performance management system
11/06/2003WO2002089315A3 Electrical signal pre-conditioning
11/06/2003WO2002047252A3 Self-boosting circuit for a power amplifier
11/06/2003WO2002009272A3 High-frequency amplifier circuit with independent control of quiescent current and bias impedance
11/06/2003US20030207671 Temperature compensation circuit and a variable gain amplification circuit
11/06/2003US20030206261 Micro circuits with a sculpted ground plane
11/06/2003US20030206076 Concurrent multi-band low noise amplifier architecture
11/06/2003US20030206064 Output power control system
11/06/2003US20030206061 Differential amplifier and filter circuit using the same
11/06/2003US20030206055 Signal processing stage and radio frequency tuner
11/05/2003EP1359719A2 Predistortion for use with non-linear amplifiers
11/05/2003EP1359666A2 Signal processing stage and radio frequency tuner
11/05/2003EP1359665A2 HBT linearizer and power booster
11/05/2003EP1358715A1 Method for energy-saving operation of a mobile radio telephone device and mobile radio telephone device
11/05/2003EP1358713A1 Cmos power amplifier with reduced harmonics and improved efficiency
11/05/2003EP1175726B1 Method and apparatus for controlling the common mode impedance misbalance of an isolated single-ended circuit
11/05/2003CN1454409A Programmable radio frequency predistortion linearizer and method thereof
11/05/2003CN1454001A Shock sound prevention circuit
11/05/2003CN1454000A Shock Sound prevention circuit
11/05/2003CN1453968A Method of raising efficiency of RF power amplifier based on base band digital predistortion technology
11/05/2003CN1453940A High frequency switch, high-frequency switch. amplified circuit and mobile body communication terminal
11/05/2003CN1453931A High-gain complementary metal oxide operation amplifier
11/04/2003US6643472 APD bias circuit
11/04/2003US6642908 Switched beam antenna architecture
11/04/2003US6642795 Fast recovery time precision amplifier
11/04/2003US6642794 Noise and input impedance matched amplifier
11/04/2003US6642792 Signal amplification device with circuit maintaining potential of input side of current mirror circuit at predetermined value
11/04/2003US6642787 Differential amplifier with two long-tailed pairs of transistors
11/04/2003US6642786 Piecewise polynomial predistortion method and apparatus for compensating nonlinear distortion of high power amplifier
11/04/2003US6642785 Power linearizer of a CDMA system and method thereof
11/04/2003US6642783 Amplification device with optimized linearity
10/2003
10/30/2003WO2003090378A1 Redundant linear power amplifier system
10/30/2003WO2003090345A1 Electronic amplifier circuit
10/30/2003WO2003090343A2 Power amplifier
10/30/2003WO2002103890A3 Time alignment of signals
10/30/2003WO2002097969A3 Power amplifier embedded cell bias detection, methods of detecting bias in power amplifiers and systems utilizing embedded cell bias detection
10/30/2003WO2002089336A3 Analogue and digital signal processing
10/30/2003WO2002089314A3 Device for controlling a closed circuit current for an amplifier transistor and amplifier circuit
10/30/2003WO2002087074A3 Automatic optimization of linearity for envelope feedback rf amplifier linearization
10/30/2003WO2002049206A3 Saturation prevention and amplifier distortion reduction
10/30/2003US20030204381 Environmental noise monitoring system
10/30/2003US20030202614 Systems and methods for providing baseband-derived predistortion to increase efficiency of transmitters
10/30/2003US20030201835 Power amplifier protection circuit
10/30/2003US20030201834 Dynamic bias controller for power amplifier circuits
10/30/2003US20030201833 N-way RF power amplifier circuit with increased back-off capability and power added efficiency using unequal input power division
10/30/2003US20030201832 HBT linearizer and power booster
10/30/2003US20030201829 Dual mode power amplifier having a common controller
10/30/2003US20030201827 High frequency power amplifier module
10/30/2003US20030201826 High frequency switch, amplifying circuit, and mobile communication terminal
10/29/2003EP1357666A1 High frequency switch, amplifying circuit, and mobile communication terminal
10/29/2003EP1356586A2 Method of linearising a signal
10/29/2003EP1356585A2 Apparatus and methods for monitoring and controlling power amplifier linearity using detected fundamental and harmonic components
10/29/2003EP1356584A2 Class e doherty amplifier topology for high efficiency signal transmitters
10/29/2003EP0795956B1 Power amplifier and communication device
10/29/2003CN1452789A Single supply HFET with temp. compensation
10/29/2003CN1452314A Automatic track feedback circuit and high-speed A/D converter therewith
10/28/2003US6640092 Transmitter
10/28/2003US6639950 Method and arrangement for correcting phase error in linearization loop of power amplifier
10/28/2003US6639491 Tunable ferro-electric multiplexer
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