Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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12/29/2010 | CN101931372A D type amplifier with second-order noise filtering circuit |
12/29/2010 | CN101931371A Magnetic suspension bearing control power amplification integrated system |
12/29/2010 | CN101931370A Low voltage drop amplifying circuit with quiescent current inhibition function |
12/29/2010 | CN101931369A Bridge output power supply voltage adaptive variable audio power amplifier |
12/29/2010 | CN101931368A Low-noise amplifier |
12/29/2010 | CN101174820B Matching circuit and multiband amplifier |
12/28/2010 | US7859342 Differential amplifier circuit, operational amplifier circuit, light-receiving amplifier circuit using the same, function selection circuit, and light-receiving circuit using the same |
12/28/2010 | US7859341 Semiconductor device |
12/28/2010 | US7859339 Differential amplification circuit |
12/28/2010 | US7859338 Compact low-power class AB amplifier |
12/28/2010 | US7859337 Wideband driver for class-D power amplifiers |
12/28/2010 | US7859336 Power supply providing ultrafast modulation of output voltage |
12/28/2010 | US7859333 Power amplifier with reconfigurable direct current coupling |
12/28/2010 | US7859331 Predictive feedback compensation for PWM switching amplifiers |
12/28/2010 | US7858918 Molecular transistor circuits compatible with carbon nanotube sensors and transducers |
12/28/2010 | US7858917 Digital photon-counting geiger-mode avalanche photodiode solid-state monolithic intensity imaging focal-plane with scalable readout circuitry |
12/23/2010 | WO2010148369A1 Detection circuit for overdrive conditions in a wireless device |
12/23/2010 | WO2010147292A1 Audio amp with spurious wave noise reduction circuit |
12/23/2010 | WO2010146486A1 Improving input impedance of low noise preamplifiers used for mri |
12/23/2010 | WO2010145837A2 Common mode voltage control |
12/23/2010 | WO2010107273A3 Amplifying driving unit using giant magneto resistance sensor and diagnosis device using the same |
12/23/2010 | US20100321549 Amplifier control device and recording non-transitory medium |
12/23/2010 | US20100321360 Differential signal receiving circuit and display apparatus |
12/23/2010 | US20100321116 Method and apparatus for controlling power supply of audio amplifier |
12/23/2010 | US20100321115 Class-G Line Driver Control Signal |
12/23/2010 | US20100321112 Anti-Pop Circuit |
12/23/2010 | US20100321111 Power amplifier |
12/23/2010 | US20100321107 High efficiency transmitter for wireless communication |
12/23/2010 | US20100321067 Programmable Gain Amplifier |
12/23/2010 | US20100321037 Configurable voltage regulator |
12/23/2010 | US20100321002 Integrated sensor with capacitive coupling rejection to the mechanical ground |
12/23/2010 | DE102004016073B4 Verfahren zur Erzeugung eines Impulsausgangssignals aus einem periodischen Sägezahnsignal und einer Referenzspannung, und getakteter Stromwandler A method for generating a pulse output signal from a periodic sawtooth signal and a reference voltage, and a clocked current transformer |
12/22/2010 | EP2264890A1 Common mode voltage control |
12/22/2010 | EP2264889A2 Method and apparatus for controlling power supply of audio amplifier |
12/22/2010 | EP2263313A1 Capacitance multiplier circuit |
12/22/2010 | EP2263311A1 Multi-source spatial power amplifier |
12/22/2010 | EP2263310A1 Quadrature output low noise transconductance amplifier having differential input |
12/22/2010 | EP2263309A2 Method and device for compensating amplification variations in an amplifier circuit |
12/22/2010 | CN201682460U Sensor signal amplification and conditioning circuit |
12/22/2010 | CN201682459U Logarithmic amplifier based on CMOS accurate voltage amplifier |
12/22/2010 | CN101926088A Power amplification device and communication device |
12/22/2010 | CN101924971A Apparatus and method for outputting audio signal in portable terminal |
12/22/2010 | CN101924572A Method and system for a leaky wave antenna as a load on a power amplifier |
12/22/2010 | CN101924525A High performance voice frequency amplifying circuit |
12/22/2010 | CN101924524A Differential complementary metal-oxide-semiconductor (CMOS) multi-mode low-noise amplifier with on-chip active Balun |
12/22/2010 | CN101924523A Power amplifier integrated circuit with temperature and output power compensation mechanism |
12/22/2010 | CN101924522A Radio-frequency power amplifier with adaptive linear biasing circuit |
12/22/2010 | CN101924521A Digital bias system of radio frequency power amplifier |
12/22/2010 | CN101924520A Base station power amplifier and method for enhancing efficiency of base station power amplifier |
12/22/2010 | CN101256755B Driver circuit |
12/21/2010 | US7855613 Communication transceiver having a three-line balun with power amplifier bias |
12/21/2010 | US7855605 Amplifier circuit |
12/21/2010 | US7855604 Protection circuit and method for RF power amplifiers in WLAN transceivers |
12/21/2010 | US7855603 Temperature compensated self-bias darlington pair amplifier |
12/21/2010 | US7855600 Two-stage operational amplifier with class AB output stage |
12/21/2010 | US7855597 Class-D amplifier |
12/21/2010 | CA2502867C Amplitude and phase matching for layered modulation reception |
12/16/2010 | WO2010144011A1 Distributed power amplifier with active matching |
12/16/2010 | WO2010143811A1 Switching power amplification circuit having a pulse width correction function |
12/16/2010 | WO2010142463A1 Class e amplifier |
12/16/2010 | WO2010142462A1 Inverse class f amplifier and method |
12/16/2010 | WO2010142460A1 Circuit for an amplifier |
12/16/2010 | WO2010101719A3 Amplifier system for cell sites and other suitable applications |
12/16/2010 | US20100315168 Cascode cmos rf power amplifier with programmable feedback cascode bias under multiple supply voltages |
12/16/2010 | US20100315167 Inter-Stage Matching Network to Enhance Common Mode Stability |
12/16/2010 | US20100315165 Broadband high output current output stage |
12/16/2010 | US20100315164 Constant-Bandwidth Variable Gain Amplifier |
12/16/2010 | US20100315163 Class D Power Amplifier |
12/16/2010 | US20100315162 3-way doherty amplifier with minimum output network |
12/16/2010 | US20100315161 Power Inductor |
12/16/2010 | DE102004038377B4 Ausgangsüberspannungsschutzschaltung für Leistungsverstärker Output overvoltage protection circuit for power amplifier |
12/15/2010 | EP2262112A2 Switch apparatus. switchable power amplification apparatus, and mobile communication terminal apparatus |
12/15/2010 | EP2262110A2 Semiconductor integrated circuits |
12/15/2010 | EP2262107A1 Inverse class F amplifier and method |
12/15/2010 | EP2262106A1 Circuit for an amplifier |
12/15/2010 | EP2262105A2 Voltage standing wave ratio detector for power amplifier |
12/15/2010 | EP2260575A2 System for converting charge into voltage and method for controlling this system |
12/15/2010 | EP2022167B1 Amplifier circuit and integrated circuit therefor |
12/15/2010 | CN201674468U Anti-interference power amplification system |
12/15/2010 | CN201674467U Power amplifier device |
12/15/2010 | CN201674466U Broadband radio frequency combined-type power amplifier |
12/15/2010 | CN1956319B 高频功率放大器及无线通信装置 High frequency power amplifier and a radio communication apparatus |
12/15/2010 | CN101919271A Filter circuit for an electret microphone |
12/15/2010 | CN101919158A Average power efficiency enhancement and linearity improvement of microwave power amplifiers |
12/15/2010 | CN101917654A Sounding device for producing resonance by combining container cavity |
12/15/2010 | CN101917373A Method for realizing high-efficiency amplification based on signal decomposition and amplification device |
12/15/2010 | CN101917171A Broadband programmable gain amplifier based on operational amplifier |
12/15/2010 | CN101917169A High-bandwidth low-power consumption frequency-compensation three-stage operational amplifier |
12/15/2010 | CN101917168A High switching rate transconductance amplifier for active power factor corrector |
12/15/2010 | CN101917167A Power combining circuit of radio-frequency power amplifier |
12/15/2010 | CN101917166A Configurable radio-frequency power amplifier and radio-frequency transmitting front-end module with same |
12/15/2010 | CN101917165A Electron beam system, image generator, and amplifier of high-speed driving inductor |
12/15/2010 | CN101217263B A compensatory method and device for DC offset voltage of amplifier |
12/15/2010 | CN101154926B Amplifier circuit with multiple power supplies |
12/14/2010 | US7853235 Field effect transistor amplifier with linearization |
12/14/2010 | US7853029 Output stage for a hearing aid and method of driving output stage |
12/14/2010 | US7852159 Method for adaptive biasing of fully differential gain boosted operational amplifiers |
12/14/2010 | US7852158 Operational amplifier |
12/14/2010 | US7852157 Differential amplifier |
12/14/2010 | US7852156 Class-D power amplifier having distortion-suppressing function |