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)
02/2003
02/26/2003CN1399812A Power amplifiers
02/26/2003CN1399805A 延迟线滤波器 Delay line filter
02/25/2003US6525611 Power amplifier protection
02/25/2003US6525607 High-voltage differential input receiver
02/25/2003US6525605 Power amplifier system having frequency and amplifier failure compensation
02/25/2003US6525604 Amplitude limiting method for a differential amplifier
02/25/2003US6525603 Feedforward amplifier linearization adapting off modulation
02/25/2003US6525594 Eliminating power-down popping in audio power amplifiers
02/25/2003US6525593 Method and apparatus for local and global power management in a programmable analog circuit
02/25/2003US6525590 Spatially redundant and complementary semiconductor device-based, single event transient-resistant linear amplifier circuit architecture
02/20/2003WO2003015263A1 Circuits and methods for compensating switched mode amplifiers
02/20/2003WO2003015260A1 Method and apparatus for a multi-pole bandwidth enhancement technique for wideband amplification
02/20/2003WO2003014866A2 Method and system for dynamic learning through a regression-based library generation process
02/20/2003WO2002088862B1 Amplifier system with on-demand power supply boost
02/20/2003US20030035304 Tracking power supply controlling
02/20/2003US20030034840 Signal dependent current controlled amplifier and method of performing same
02/20/2003US20030034839 System and method for minimizing dissipation in RF power amplifiers
02/20/2003US20030034837 Broadband amplifier system having improved linearity and minimum loss
02/20/2003US20030034834 Apparatus and method for controlling adaptive circuits
02/20/2003US20030034833 Operational amplifier having offset cancel function
02/19/2003EP1284504A2 High linearity, low power voltage controlled resistor
02/19/2003CN1398131A Feed forward amplifier and feed forward amplifying method
02/19/2003CN1398072A 前馈放大器 Feedforward amplifier
02/18/2003US6522901 Portable radio transceiver
02/18/2003US6522203 Power amplifying transistors
02/18/2003US6522200 Process-insensitive, highly-linear constant transconductance circuit
02/18/2003US6522199 Reconfigurable dual-mode multiple stage operational amplifiers
02/18/2003US6522198 Power amplifier having predistortion linearizer
02/18/2003US6522197 Method and apparatus for optimum biasing of cascaded MOSFET radio-frequency devices
02/18/2003US6522179 Differential line driver circuit
02/18/2003CA2325286C Feedforward amplifier
02/18/2003CA2313045C Feedforward amplifier network with swept pilot tone
02/13/2003WO2003013095A2 Method for reducing the power loss occurring during the amplification of ofdm signals, and an associated device
02/13/2003WO2003013012A1 Receiver
02/13/2003WO2003012983A1 Differential amplifier circuit with common mode output voltage regulation
02/13/2003WO2003012982A2 Tuned damping circuit for power amplifier output
02/13/2003WO2003012981A1 Active element bias circuit for rf power transistor input
02/13/2003WO2003012980A1 Active bias circuit
02/13/2003WO2003012871A1 Compound semiconductor devices and silicon devices
02/13/2003WO2002082756A3 Amplitude and/or phase-modulator according to the principle of envelope elimination and restoration
02/13/2003US20030032397 Method and transmission circuit for generating a transmission signal
02/13/2003US20030032396 Electronic apparatus and wireless communication system
02/13/2003US20030031329 Sound signal reproducing apparatus
02/13/2003US20030031270 Multiple stage and/or nested predistortion system and method
02/13/2003US20030030956 Current detection and overcurrent protection for transistors in pulse-width modulation amplifier
02/13/2003US20030030496 Method for implementing high frequency programmable poles and zeros in disk drive preamplifiers
02/13/2003US20030030494 Low noise balanced amplifier
02/13/2003US20030030493 Low distortion broadband amplifier using gaas phemt devices
02/13/2003US20030030492 Current mirror and differential amplifier for providing large current ratio and high output impedance
02/13/2003US20030030490 Distortion compensation amplification apparatus of feed forward type and adaptive pre-distortion type
02/13/2003US20030030489 Intermodulation signal detector
02/13/2003US20030030487 Reduced architecture for multibranch feedforward power amplifier linearizers
02/13/2003US20030030482 Semiconductor integrated circuit and reference voltage generating circuit employing it
02/13/2003US20030029991 Temperature compensating circuit, temperature compensating logarithm conversion circuit and light receiver
02/12/2003EP1282939A2 Rf power amplifier having high power-added efficiency
02/12/2003EP1206834B1 Methods for calibration of radio devices at room temperature
02/12/2003CN1397106A High-frequency amplifier and high-frequency mixer
02/12/2003CN1396708A Light amplfier and optical pick-up device using it
02/12/2003CN1396707A Pre-distortion linear circuit and pre-distortion compensation method program and medium of pre-distortion
02/12/2003CN1101616C Protecting circuit for output transistors in power amplifier
02/11/2003US6519374 Predistortion arrangement using mixers in nonlinear electro-optical applications
02/11/2003US6519010 Broadcast transmission system with sampling and correction arrangement for correcting distortion caused by amplifying and signal conditioning components
02/11/2003US6518840 Circuit for linearizing the power control profile of a BiCMOS power amplifier
02/11/2003US6518838 Circuit for compensating noise and errors from an output state of a digital amplifier
02/11/2003US6518804 Semiconductor integrated circuit device
02/11/2003CA2125939C Apparatus for selecting the operating point of an amplifier stage
02/06/2003WO2003010886A1 Amplification circuit
02/06/2003WO2003010885A1 Improved linear power amplifier
02/06/2003WO2003010884A1 Multistage amplifier and integrated circuit
02/06/2003WO2003010883A1 Multistage amplifier and integrated circuit
02/06/2003WO2002087073A3 An improved dc offset self-calibration system for a digital switching amplifier
02/06/2003US20030028358 Method and system of dynamic learning through a regression-based library generation process
02/06/2003US20030025564 Multi-frequency synthesizer apparatus and method
02/06/2003US20030025561 Load switching for transmissions with different peak-to-average power ratios
02/06/2003US20030025557 Linear transconductance amplifier
02/06/2003US20030025556 Differential amplifier providing precisely balanced output signals and having low power consumption
02/06/2003US20030025555 Radio frequency power amplifier
02/06/2003US20030025554 Headphone amplifier
02/06/2003US20030025553 Resource managed power amplifier
02/06/2003US20030025533 Multi-input differential circuit
02/05/2003EP1282224A1 Distortion compensation apparatus
02/05/2003EP1282064A2 Method and circuit for compensating vt inducted drift in monolithic logarithmic amplifier
02/05/2003CN2534732Y Inverted Darlington audio frequency amplifier with stable bias current
02/05/2003CN1395760A Difference frequency impedance transformation circuits and methods for providing same in power amplifier systems
02/05/2003CN1395438A Amplifier with distortion compensator and radio communication base station
02/05/2003CN1395363A Variable-gain single-ended-to-difference radio-frequency low-noise amplifier
02/05/2003CN1101077C Split-path linear isolation circuit apparatus and method
02/04/2003US6516067 Anti pop for power off
02/04/2003US6515712 Signal distortion compensating apparatus and method in digital TV translator
02/04/2003US6515547 Self-biased cascode RF power amplifier in sub-micron technical field
02/04/2003US6515546 Bias circuit for use with low-voltage power supply
02/04/2003US6515545 RF power amplifier transistor quiescent current checking and adjusting
02/04/2003US6515544 Multi-terminal power combining feed-forward amplifier
02/04/2003US6515543 Circuit configuration for controlling nonlinear paths
02/04/2003US6515542 Differential intermediate frequency (IF) amplifier with narrow band noise dithering for driving high speed analog-to-digital conversion and communication applications
02/04/2003US6515540 High order multi-path operational amplifier with output saturation recovery
01/2003
01/30/2003WO2003009467A1 Feed forward amplifying circuit
01/30/2003WO2003009466A1 Preamplification circuit
01/30/2003WO2002054581A3 Class e doherty amplifier topology for high efficiency signal transmitters
01/30/2003US20030022638 Electronic apparatus and design method
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