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)
10/2003
10/28/2003US6639471 Power amplifier circuit, control method for power amplifier circuit, and portable terminal apparatus for mobile communication
10/28/2003US6639470 Constant current biasing circuit for linear power amplifiers
10/28/2003US6639468 Low-noise amplifier, in particular for a cellular mobile telephone
10/28/2003US6639466 Amplifier bias adjustment circuit to maintain high-output third-order intermodulation distortion performance
10/28/2003US6639465 Dynamic bias for a power amplifier
10/28/2003US6639464 Composite amplifier
10/28/2003US6639462 Digital AM transmitter having tracking power supply compensation
10/28/2003US6639460 Residual offset correction method and circuit for chopper stabilized amplifiers
10/28/2003US6639457 CMOS transconductor circuit with high linearity
10/28/2003US6639453 Active bias circuit having wilson and widlar configurations
10/28/2003US6639446 High linearity, high gain mixer circuit
10/23/2003WO2002069485A3 Gain compensation circuit using a variable offset voltage
10/23/2003WO2002056462A3 Gain and bandwidth enhancement for rf power amplifier package
10/23/2003WO2002013375A3 Method and apparatus for improving power supply rejection in amplifier rail to rail output stages
10/23/2003US20030199257 Spurious energy correlation for control of linear power amplifiers
10/23/2003US20030199256 Memory-based amplifier load adjust system
10/23/2003US20030199153 Method of producing SI-GE base semiconductor devices
10/23/2003US20030199130 CMOS high impedance circuit
10/23/2003US20030198300 Waveforms for envelope tracking transmitter
10/23/2003US20030197575 Integrated circuit low noise amplifier and applications thereof
10/23/2003US20030197559 Active predistorting linearizer with agile bypass circuit for safe mode operation
10/23/2003US20030197558 Adaptive predistortion system and a method of adaptively predistorting a signal
10/23/2003US20030197556 Power control and modulation of switched-mode power amplifiers with one or more stages
10/23/2003US20030197555 Integrated current mirror in output stage of operational amplifier
10/23/2003US20030197552 Reference voltage source circuit operating with low voltage
10/22/2003EP1355464A2 DC removal in an optical receiver
10/22/2003EP1355427A1 Differential comparator circuit
10/22/2003EP1355418A1 Audio superpositioning
10/22/2003EP1355417A1 Microphone input buffer biasing circuit
10/22/2003EP1355416A1 CMOS high impedance circuit
10/22/2003EP1355415A2 Switched microphone buffer
10/22/2003EP1355414A1 Ripple rejection for amplifier
10/22/2003EP1354401A1 Circuits and methods for controlling transients during audio device power-up and power-down, and systems using the same
10/22/2003EP1181771B1 Broadcast transmission system with distributed correction
10/22/2003CN1450770A Nonlinear distortion compensator
10/22/2003CN1450652A Semiconductor device and mfg method and power amplifier moudle
10/22/2003CN1125534C Anti-pop of power off electronic apparatus
10/21/2003US6636119 Compact cascode radio frequency CMOS power amplifier
10/21/2003US6636118 High-frequency power amplification module and radio communication device
10/21/2003US6636116 Fully differential current feedback amplifier
10/21/2003US6636115 Amplifier and mixer with improved linearity
10/21/2003US6636114 High frequency power amplifier module and wireless communication apparatus
10/21/2003US6636112 High-efficiency modulating RF amplifier
10/21/2003US6636111 Bootstrap circuit to cancel input bias currents of a differential amplifier over most of common-mode input voltage range
10/21/2003US6636103 Amplifier system with on-demand power supply boost
10/21/2003US6636083 Leakage current cancellation technique for low power switched-capacitor circuits
10/16/2003WO2003085849A1 Communication apparatus
10/16/2003WO2003085823A1 Signal amplifier and integrated circuit
10/16/2003WO2003085822A1 Adaptive digital pre-distortion using amplifier model that incorporates frequency-dependent non-linearities
10/16/2003WO2003063338A3 Direct conversion of low power high linearity receiver
10/16/2003WO2003034386A3 Method and system for ramp control of precharge voltage
10/16/2003WO2003014866A3 Method and system for dynamic learning through a regression-based library generation process
10/16/2003WO2002103891A3 Control scheme for signal processing arrangement
10/16/2003WO2002078176A3 Digital baseband receiver in a multi-carrier power amplifier
10/16/2003WO2002069489A3 An automatic gain control circuit with high linearity and monotonically correlated offset voltage
10/16/2003WO2002031970A3 Method and apparatus for reducing distortion
10/16/2003US20030195396 Methods, systems, and associated implantable devices for dynamic monitoring of physiological and biological properties of tumors
10/16/2003US20030194971 Dual mode class D amplifiers
10/16/2003US20030194970 Dual mode class D amplifiers
10/16/2003US20030194244 Burst-mode optical receiver of differential output structure
10/16/2003US20030194101 Audio superpositioning
10/16/2003US20030194100 Microphone input buffer biasing circuit
10/16/2003US20030194081 Ripple rejection for amplifier
10/16/2003US20030193371 CMOS class AB power amplifier with cancellation of nonlinearity due to change in gate capacitance of a NMOS input transistor with switching
10/16/2003US20030193369 Zero-bias bypass switching circuit using mismatched 90 degrees hybrid
10/16/2003US20030193368 Zero-bias bypass switch
10/16/2003US20030193367 Residual offset correction method and circuit for chopper stabilized amplifiers
10/16/2003US20030193354 Switched microphone buffer
10/15/2003EP1353439A2 Nonlinear distortion compensating device
10/15/2003EP1353438A1 Feedforward amplifier, communication apparatus, feedforward amplifying method, program and medium
10/15/2003EP1353384A2 Heterojunction bipolar transistor, manufacturing thereof and power amplifier module
10/15/2003EP1352473A1 Input stage with selectable input impedance
10/15/2003EP1352467A2 Low noise fully differential amplifier
10/15/2003EP1352466A2 A fully differential, variable-gain amplifier and a multidimensional amplifier arrangement
10/15/2003EP1196987B1 Linearizer for microwave amplifier
10/15/2003CN1449108A Amplifying circuit for limiting the output signal amplitude supplied to loudspeaker
10/15/2003CN1124681C Predistorter of amplifier and amplifier unit
10/14/2003US6633751 System for a dual feedback translation loop for power amplifier feedback control
10/14/2003US6633750 Methods and apparatus for adjusting DC power consumption in mobile handset
10/14/2003US6633447 Method and apparatus for compensation of second order distortion
10/14/2003US6633200 Management of internal signal levels and control of the net gain for a LINC amplifier
10/14/2003US6633199 Amplifier circuit, radio transmitter, method and use
10/10/2003WO2003085821A1 A differential amplifier
10/09/2003WO2003084056A1 Power amplifier array with same type predistortion amplifier
10/09/2003WO2003084054A2 Amplifier and frequency converter
10/09/2003WO2002103895A3 Systems and methods for amplification of a communication signal
10/09/2003WO2002071596A3 High-frequency amplifier circuit having a directly-connected bias circuit
10/09/2003WO2002033812A3 Dc-coupling approach for current mode circuits
10/08/2003EP1351380A1 Class D amplifier energy control
10/08/2003EP1350330A1 Transmitting device
10/08/2003EP1350316A1 Method and arrangement relating to electronic compensation
10/08/2003EP1350315A1 Power amplifier
10/08/2003EP1350313A2 Gain and bandwidth enhancement for rf power amplifier package
10/08/2003EP1350312A1 Pre-distortion of non-linear devices by post-detection
10/08/2003EP1350311A2 Power amplifier saturation detection and compensation
10/08/2003EP1145424B1 Hybrid power mosfet for high current carrying capacity
10/08/2003CN2579081Y Low non-linear charge amplifier
10/08/2003CN1447522A Reference voltage generating circuit and voltage amplifier adopting same
10/08/2003CN1123983C Radio devices including power amplifier control circuits with hardware lockouts
10/07/2003US6630903 Programmable power regulator for medium to high power RF amplifiers with variable frequency applications
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