| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 02/09/2012 | WO2012017580A1 Transmitter and method for controlling same |
| 02/09/2012 | WO2012017579A1 Power modulator, and method for controlling same |
| 02/09/2012 | US20120034956 System and method for biasing a power amplifier |
| 02/09/2012 | US20120032944 Operational amplifier circuit, signal driver, display device, and offset voltage adjusting method |
| 02/09/2012 | US20120032943 Semiconductor Device, and Display Device and Electronic Device Utilizing the Same |
| 02/09/2012 | US20120032932 Signal driver and display device |
| 02/09/2012 | US20120032831 Adder-embedded dynamic preamplifier |
| 02/09/2012 | US20120032744 Power amplifier |
| 02/09/2012 | US20120032743 Low-noise amplifier with gain enhancement |
| 02/09/2012 | US20120032742 Cmos millimeter-wave variable-gain low-noise amplifier |
| 02/09/2012 | US20120032741 Integrated Bluetooth and Wireless LAN Transceivers Having Merged Low Noise and Power Amplifier |
| 02/09/2012 | US20120032740 Amplifier for receiving intermittent optical signal |
| 02/09/2012 | US20120032738 Power amplifier |
| 02/09/2012 | US20120032737 On-chip millimeter wave lange coupler |
| 02/09/2012 | DE112009002318T5 Komplementäre Pulsbreiten-Modulationsschaltung und Digital-Analog-Wandler Complementary pulse width modulation circuit and digital-to-analog converter |
| 02/08/2012 | EP2416629A1 Pulse-modulated high-frequency power control method and pulse-modulated high-frequency power source device |
| 02/08/2012 | EP2078335B1 Class d amplifier |
| 02/08/2012 | EP1581995B1 Controllable rf broadband amplifier with a constant input impedance |
| 02/08/2012 | DE202011107988U1 Automatische Verstärkungsregelung Automatic gain control |
| 02/08/2012 | CN202143036U 一种恒定跨导和恒定共模输出电流的轨到轨输入级 A constant-transconductance and constant common mode output current rail-to-rail input stage |
| 02/08/2012 | CN202143035U 一种小型功率放大器 A small power amplifier |
| 02/08/2012 | CN102349233A Amplifier component comprising a compensation element |
| 02/08/2012 | CN102349188A On-chip millimeter wave lange coupler |
| 02/08/2012 | CN102347739A High-accuracy current-limiting voltage tracking circuit |
| 02/08/2012 | CN102347738A Two-stage fully-differential low-noise low-offset chopping operational amplifier |
| 02/08/2012 | CN102347737A Broadband gallium-nitride-based microwave high-power single-chip integrated power amplifier |
| 02/08/2012 | CN102347736A Integrated nano microcavity current amplifier |
| 02/08/2012 | CN102347735A Multilayer-film nanometer microcavity current amplifier |
| 02/08/2012 | CN102347734A CMOS power amplifier |
| 02/08/2012 | CN102347733A Reflection gain type high-power amplifier |
| 02/08/2012 | CN101697479B 可调增益低噪声放大器 Variable gain low noise amplifier |
| 02/08/2012 | CN101604959B 自动增益车载有源天线放大器 Automatic Gain Car Active Antenna Amplifier |
| 02/08/2012 | CN101471628B Ab类放大器 Ab Class Amplifier |
| 02/07/2012 | US8111845 System having a pulse width modulation device |
| 02/07/2012 | US8111105 Variable gain BiCMOS amplifier |
| 02/07/2012 | US8111103 Amplifier circuit with overshoot suppression |
| 02/07/2012 | US8111102 Auto gain controllers, and communication terminals having the same |
| 02/07/2012 | US8111100 Differential amplifier with improved zero-point calibration |
| 02/07/2012 | US8111099 Multi-channel audio playback apparatus and method |
| 02/07/2012 | CA2486240C Switched resonant ultrasonic power amplifier system |
| 02/02/2012 | WO2012014395A1 Amplifying device |
| 02/02/2012 | WO2012014343A1 Semiconductor integrated circuit and tuner system provided with same |
| 02/02/2012 | WO2012014019A1 Ota-based current-mode filter and oscillator |
| 02/02/2012 | WO2012013613A1 Low phase noise buffer for crystal oscillator |
| 02/02/2012 | US20120027127 Amplifier |
| 02/02/2012 | US20120025917 Efficient amplification stage |
| 02/02/2012 | US20120025916 Doherty amplifier |
| 02/02/2012 | US20120025915 Doherty amplifier |
| 02/02/2012 | US20120025912 Differential amplifier circuit |
| 02/02/2012 | US20120025911 Low Noise Amplifier with Current Bleeding Branch |
| 02/02/2012 | US20120025910 Switching amplifier with enhanced supply rejection and related method |
| 02/02/2012 | US20120025063 Linear/logarithmic capacitive trans-impedance amplifier circuit |
| 02/02/2012 | DE102011106570A1 CMOS Leistungsverstärker CMOS power amplifier |
| 02/01/2012 | EP2413499A1 Switched capacitor circuit |
| 02/01/2012 | EP2413498A1 Doherty amplifier |
| 02/01/2012 | EP2412093A1 Amplifier supporting multiple gain modes |
| 02/01/2012 | EP1552687B1 Automatically setting an operative state of a wideband amplifier |
| 02/01/2012 | CN202135100U 三电平d类音频功率放大器 Three-level d class audio power amplifier |
| 02/01/2012 | CN202135099U Linear microwave power amplifier for time division synchronous code division multiple access (TD-SCDMA) |
| 02/01/2012 | CN202135098U 一种平面巴伦 A flat Barron |
| 02/01/2012 | CN102342019A Amplifier system for cell sites and other suitable applications |
| 02/01/2012 | CN102340358A Apparatus applied for detection and transmission of low frequency signal |
| 02/01/2012 | CN102340285A Circuit and method for generating and amplifying differential signals |
| 02/01/2012 | CN102340284A Low power voltage transconductance adjustable transconductance-constant rail-to-rail input operational amplifier |
| 02/01/2012 | CN102340283A Method and device for envelope tracking |
| 02/01/2012 | CN102339082A Power level control circuit |
| 02/01/2012 | CN101504558B 半导体电路及减轻半导体电路中电流变动的方法 The semiconductor circuit and method for reducing semiconductor circuit changes the current |
| 02/01/2012 | CN101335504B 用于幅度调制的射频功率放大器及超高频射频识别标签 RF power amplifiers for amplitude modulation and UHF radio frequency identification tag |
| 01/31/2012 | US8107901 Feedback loop with adjustable bandwidth |
| 01/31/2012 | US8106713 Power amplifier with stabilising network |
| 01/31/2012 | US8106712 Systems and methods for self-mixing adaptive bias circuit for power amplifier |
| 01/31/2012 | US8106711 Stacked pre-driver amplifier |
| 01/31/2012 | US8106710 Apparatus and method for variable gain transconductance |
| 01/31/2012 | CA2469577C Method for generating a high-power alternating voltage that follows an input data stream |
| 01/26/2012 | WO2012009757A1 Method and apparatus for locating faults in communications networks |
| 01/26/2012 | US20120021713 Concurrent impedance and noise matching transconductance amplifier and receiver implementing same |
| 01/26/2012 | US20120021697 Radio frequency signal processing circuit and quadrature power amplifier |
| 01/26/2012 | US20120020176 Generating and amplifying differential signals |
| 01/26/2012 | US20120020162 Low power, single poly EEPROM cell with voltage divider |
| 01/26/2012 | US20120019326 Doherty amplifier and semiconductor device |
| 01/26/2012 | US20120019324 Amplifier With Improved Input Resistance and Controlled Common Mode |
| 01/26/2012 | US20120019323 Current-mode amplifier |
| 01/26/2012 | US20120019322 Low dropout current source |
| 01/26/2012 | US20120019321 Low phase noise buffer for crystal oscillator |
| 01/26/2012 | US20120019304 Mixer for Canceling Second-Order Inter-Modulation Distortion and Associated Transconductor Circuit |
| 01/26/2012 | US20120018622 Differential amplifier with function of variable gain and optical receiver implemented with the same |
| 01/26/2012 | US20120018621 Signal processing device and photodetection device |
| 01/26/2012 | DE102010031575A1 Amplifier circuit used in complementary metal oxide semiconductor integrated circuit, has current setting circuitry that adjusts total current based on difference between potentials at differential amplifier inputs |
| 01/25/2012 | EP2409402A2 Amplifying driving unit using giant magneto resistance sensor and diagnosis device using the same |
| 01/25/2012 | EP2409401A1 Digital filtering in a class d amplifier system to reduce noise fold over |
| 01/25/2012 | EP2409400A2 Common-gate common-source amplifier |
| 01/25/2012 | EP2409399A1 Cascode amplifier with protection circuitry |
| 01/25/2012 | EP2409393A1 Passive differential voltage doubler |
| 01/25/2012 | EP1787388B1 Apparatus for variable distortion |
| 01/25/2012 | EP1576724B1 Rf power amplifier employing bias circuit topologies for minimization of rf amplifier memory effects |
| 01/25/2012 | EP1547433B1 Audio amplifier with local interface system |
| 01/25/2012 | CN102334280A Differential amplifier and pipeline ad converter using same |
| 01/25/2012 | CN102334279A Push-pull linear hybrid class h amplifier |
| 01/25/2012 | CN102334278A Amplification device and sensor module |
| 01/25/2012 | CN102332886A Multi-frequency-band power amplifier |