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)
11/2011
11/09/2011	CN101764574B Audio-frequency amplifier circuit with noise suppression
11/09/2011	CN101677228B Power amplifier system, control method and control device thereof
11/09/2011	CN101615893B Amplifier using delta-sigma modulation and method for adjusting errors of same
11/09/2011	CN101473530B Adaptive pre-distortion
11/09/2011	CN101442294B Amplifying circuit and method for improving linearity thereof
11/09/2011	CN101421916B Doherty amplifier
11/09/2011	CN101183854B Amplifier
11/08/2011	US8054134 Coupling isolation method and operational amplifier using the same
11/08/2011	US8054128 Current control mechanism for low voltage applications
11/08/2011	US8054127 Feedforward distortion compensation amplifier
11/03/2011	WO2011070483A3 Apparatus and method for pre-distorting and amplifying a signal
11/03/2011	US20110269510 Apparatus and method for preventing transmission degradation in wireless communication system
11/03/2011	US20110267144 Noise-canceling for differential amplifiers requiring no external matching
11/03/2011	US20110267143 System for reducing noise in a catv home amplifier upstream path and a method thereof
11/03/2011	US20110267141 Multiport amplifier and wireless device using the same
11/02/2011	EP2383887A1 Multi-port amplifier and wireless device using same
11/02/2011	EP2383886A1 Memory effect canceller, transmitter, and memory effect cancelling method
11/02/2011	EP2383885A1 Transimpedance amplifier
11/02/2011	EP2383884A1 High frequency amplifier, wireless device and control method
11/02/2011	EP2383883A1 Power amplifier
11/02/2011	EP2382706A1 Push-pull linear hybrid class h amplifier
11/02/2011	EP1872472B1 Adaptive predistortion linearized amplifier system employing selective sampling
11/02/2011	CN202026279U Inquiry machine with wide voltage isolation audio power amplifier
11/02/2011	CN202026278U Program-controlled low-noise wideband DC amplifier
11/02/2011	CN102231621A Hot backup method and hot backup device for multi-channel power amplifier
11/02/2011	CN102231620A Power amplifier linearization method and device based on baseband digital predistortion technology
11/02/2011	CN101569090B An amplification apparatus
11/01/2011	US8050891 Sensor mapping
11/01/2011	US8049563 Distributed circular geometry power amplifier architecture
11/01/2011	US8049560 Increasing the density of larger magnitude amplifier output samples for estimating a model of digital pre-distortion to compensate for amplifier non-linearity
11/01/2011	US8049557 Self oscillating class D amplification device
10/2011
10/27/2011	WO2011133542A1 Pseudo-envelope following power management system
10/27/2011	WO2011132240A1 Amplification device for capacitor microphone
10/27/2011	WO2011131625A1 Power amplifier with low noise figure and voltage variable gain
10/27/2011	WO2011131122A1 Improved capture buffer of digital predistortion systems
10/27/2011	US20110260792 Distortion compensation device, radio communication device, and distortion compensation method
10/27/2011	US20110260790 Dual time alignment architecture for transmitters using eer/et amplifiers and others
10/27/2011	US20110260789 Variable gain amplifier circuit
10/26/2011	EP2380278A1 Ultra low noise high linearity lna for multi-mode transceiver
10/26/2011	EP2380277A1 Class ab amplifier with resistive level-shifting circuitry
10/26/2011	EP2380276A1 A multi stage amplifier
10/26/2011	CN202019340U THS3001-based high-frequency wideband amplifier circuit
10/26/2011	CN1682444B Integrated circuit with automatic polarity detection and configuration
10/26/2011	CN101164227B A power supply system.
10/25/2011	US8045642 IQ-modulator pre-distortion
10/25/2011	US8044718 Integrated programmable gain amplifier circuit and system including the circuit
10/25/2011	US8044717 Amplifier circuit and method therefor
10/25/2011	US8044716 Adjustable segmented power amplifier
10/20/2011	WO2011130021A1 Methods for determining optimum power supply voltages for radio-frequency power amplifier circuitry
10/20/2011	WO2011129727A1 Power-amplifier arrangement
10/20/2011	WO2011128341A1 Timing alignment for modulated supply
10/20/2011	WO2011127868A2 Doherty power amplifier and signal processing method
10/20/2011	US20110255636 Distortion compensation circuit, transmitting apparatus and distortion compensating method
10/20/2011	US20110254627 Signaling systems, preamplifiers, memory devices and methods
10/20/2011	US20110254624 Distortion compensating circuit and radio base station
10/20/2011	US20110254623 Distortion compensation circuit
10/20/2011	US20110254622 Power amplifying devices
10/20/2011	US20110254621 Signal Processing Circuit
10/20/2011	US20110254609 Vector modulator having attenuators with continuous input steering
10/19/2011	EP2378669A1 Communications device with separate I and Q phase power amplification having selective phase and magnitude adjustment and related methods
10/19/2011	EP2378661A2 Dual mode power amplifier
10/19/2011	EP2378659A1 Distortion compensation circuit
10/19/2011	EP2378658A1 Switched mode power amplification
10/19/2011	EP2378657A1 Power amplification device
10/19/2011	EP2377282A1 Transmitter with reduced spectral regrowth and associated methods
10/19/2011	EP2377242A2 Dynamic signal contamination suppression
10/19/2011	EP2377241A1 Techniques for improving amplifier linearity
10/19/2011	EP2377240A2 Method and apparatus for enhancing performance of doherty power amplifier
10/19/2011	EP2243268B1 Radiofrequency emission system
10/19/2011	EP2033306B1 Switched mode power amplification
10/19/2011	CN202014228U Automobile digital power amplifier
10/19/2011	CN202014227U Direct-coupling complementary output circuit
10/19/2011	CN202014226U High efficiency three-circuit Doherty amplifier
10/19/2011	CN102224675A Dynamically biased amplifier
10/19/2011	CN101567667B Enhancement type analog predistortion linear power amplifier
10/19/2011	CN101499779B Piezoelectric minimized wide-band power amplifier
10/19/2011	CN101126767B Feedback circuit for radiation resistant transducer
10/18/2011	US8041315 Method and a device for adjusting power amplifier properties
10/18/2011	US8040188 Low noise cascode amplifier
10/18/2011	US8040182 Predistorter
10/18/2011	CA2504979C Improved rf transistor amplifier linearity using suppressed third order transconductance
10/18/2011	CA2386929C Amplifier stabilisation
10/13/2011	WO2011126525A1 Active mute scheme for an amplifier
10/13/2011	WO2011125261A1 Amplifier circuit and wireless communication device
10/13/2011	WO2011124116A1 Voltage driving apparatus for power amplifier, power amplifying system, power supply device for radio frequency power amplifier and communication device
10/13/2011	WO2011071573A3 Amplifiers with depletion and enhancement mode thin film transistors and related methods
10/13/2011	US20110250853 Operating point setting of an amplifier
10/12/2011	EP2375568A2 Power feeding apparatus, power receiving apparatus, wireless power feeding system and method for wireless transfer of power
10/12/2011	EP2375567A1 Distortion compensating circuit and radio base station
10/12/2011	EP2375566A1 Duplicate feedback network in class D amplifiers
10/12/2011	EP2375565A1 Bias circuit design for bipolar power amplifier linearity improvement
10/12/2011	EP2374210A1 Multi-stage amplifier
10/12/2011	EP2005577B1 Dynamic bias control in power amplifier
10/12/2011	EP1547240B1 Dual mode power amplifier having a common controller
10/12/2011	CN202009364U Circuit for lessening effects of electromagnetic radiation of amplifier
10/12/2011	CN202009363U Ku-band ultralow-noise amplifier
10/12/2011	CN1976218B Low voltage low power class A/B output stage
10/12/2011	CN102217262A Method for transmitting radio frequency signals and base station device
10/12/2011	CN102215028A 放大器 Amplifiers
10/12/2011	CN101375493B Polar modulation apparatus

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