| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 08/27/2008 | EP1962418A1 Cryogenic receiving amplifier and amplifying method |
| 08/27/2008 | EP1961124A1 Low noise amplifier |
| 08/27/2008 | EP1961115A1 Electronic circuit with compensation of intrinsic offset of differential pairs |
| 08/27/2008 | EP1961114A2 Enhanced low noise amplifier |
| 08/27/2008 | EP1504543A4 Data access arrangement using a high frequency transformer for electrical isolation |
| 08/27/2008 | EP1364460B1 Interface circuit for a differential signal |
| 08/27/2008 | EP1299943B1 Self-configurable amplifier circuit |
| 08/27/2008 | CN201107848Y Low noise amplifier |
| 08/27/2008 | CN201107042Y Position detection circuit for permanent magnetism synchronous machine without sensor driver |
| 08/27/2008 | CN101252352A Semiconductor integrated circuit device and high-frequency power amplifier module |
| 08/27/2008 | CN101252344A Cryogenic receiving amplifier and amplifying mehtod |
| 08/27/2008 | CN101252343A Amplifier circuit |
| 08/27/2008 | CN101252342A Single chip radio-frequency power amplifier |
| 08/27/2008 | CN101251399A High input impedance difference preliminary amplifier circuit of ultrasonic flowmeter |
| 08/27/2008 | CN100414831C DPS based intellectual high speed magnetic suspension control and digital power amplifying device |
| 08/27/2008 | CN100414604C Level regulator |
| 08/26/2008 | US7418213 Transimpedance amplifier with integrated filtering and reduced parasitic capacitance |
| 08/26/2008 | US7417508 Multiple RF path amplifiers |
| 08/26/2008 | US7417507 Bias circuit for power amplifier having a low degradation in distortion characteristics |
| 08/26/2008 | US7417506 Amplifier having switchable negative feedback |
| 08/26/2008 | US7417505 CMOS amplifiers with frequency compensating capacitors |
| 08/26/2008 | US7417504 Startup and shutdown click noise elimination for class D amplifier |
| 08/26/2008 | US7417503 Method for high efficiency audio amplifier |
| 08/26/2008 | US7417501 Variable inductor, oscillator including the variable inductor and radio terminal comprising this oscillator, and amplifier including the variable inductor and radio terminal comprising this amplifier |
| 08/26/2008 | US7417500 Control of an adjustable gain amplifier |
| 08/26/2008 | US7417497 PWM modulator and class-D amplifier having the same |
| 08/21/2008 | WO2008099507A1 Light receiver |
| 08/21/2008 | WO2008099464A1 Power amplifier |
| 08/21/2008 | WO2008060556A3 Apparatus and method for controlling a common-mode voltage of switching amplifiers |
| 08/21/2008 | WO2008004074A3 Method and apparatus for providing adaptive supply voltage control of a power amplifier |
| 08/21/2008 | WO2007099442A9 Hybrid feedback controlled oscillation modulator and switching power amplifier system |
| 08/21/2008 | US20080200128 Twisted Pair Communication System, Apparatus and Method Thereof |
| 08/21/2008 | US20080197930 Digital Amplifier |
| 08/21/2008 | US20080197929 Resonant Types Of Common-Source/Common-Emitter Struture For High Gain Amplification |
| 08/21/2008 | US20080197928 Threshold voltage compensation for a two stage amplifier |
| 08/21/2008 | US20080197927 Constant bandwidth DC offset correction in an amplifier |
| 08/21/2008 | US20080197926 Source follower circuit and semiconductor apparatus |
| 08/21/2008 | US20080197922 Amplifier device for an antenna operable in at least one mode |
| 08/21/2008 | US20080197920 Arrangement For Carrying Out Current-To-Voltage Conversion |
| 08/21/2008 | US20080197890 Light receiving circuit |
| 08/21/2008 | US20080197860 Configurable voltage regulator |
| 08/21/2008 | US20080197822 Variable Gain Amplifier and Ac Power Supply Device Using the Same |
| 08/21/2008 | US20080197271 Temperature-Compensated High Dynamic Range Optical Receiver |
| 08/21/2008 | DE102007060607A1 Amplifier circuit has multiple amplifier units, which are connected in parallel with input signal connection, and amplifier units has circuit, which is connected in parallel with another circuit |
| 08/20/2008 | EP1959565A1 High efficiency amplifier |
| 08/20/2008 | EP1959564A2 System and method for dynamic drain voltage adjustment to control linearity, output power, and efficiency in RF power amplifiers |
| 08/20/2008 | EP1959563A2 Doherty amplifying apparatus using a harmonic control circuit |
| 08/20/2008 | EP1958331A2 Variable passive components with high resolution value selection and control |
| 08/20/2008 | EP1958327A2 Common-gate common-source transconductance stage for rf downconversion mixer |
| 08/20/2008 | EP1957156A2 Unipolar electric pulse generator |
| 08/20/2008 | EP1380106B1 Tunable matching circuit |
| 08/20/2008 | EP1245078B1 Power amplifier and a method for operating a power amplifier |
| 08/20/2008 | CN101247110A Push-pull power amplifier without matching amplifier tube |
| 08/20/2008 | CN101247109A Efficiency self-adaptive regulating power amplifier and implementing method thereof |
| 08/20/2008 | CN101247108A Integrated digital predistortion power amplifier |
| 08/20/2008 | CN100413214C Differential input stage for electronic equipment, comprising means for reducing interference caused by a voltage or current in common mode |
| 08/20/2008 | CN100413213C Power control and modulation of switched-mode power amplifiers with one or more stages |
| 08/20/2008 | CN100413212C High frequency power amplifer, module of high frequency power amplifer and mobile telephone |
| 08/19/2008 | US7414481 Receiver with colpitts differential oscillator, colpitts quadrature oscillator, and common-gate low noise amplifier |
| 08/19/2008 | US7414480 Differential/single-ended input stage |
| 08/19/2008 | US7414479 Automatic bias control circuit for reduced current consumption in a linear power amplifier |
| 08/19/2008 | US7414478 Integrated parallel power amplifier |
| 08/19/2008 | US7414477 Distributed amplifier topologies with improved gain bandwidth product |
| 08/19/2008 | US7414476 Sensor interface circuitry having adjustable gain and Q, and method for adjusting sensor interface circuitry gain and Q |
| 08/19/2008 | US7414475 Linearity-improved differential amplification circuit |
| 08/19/2008 | US7414474 Operational amplifier |
| 08/19/2008 | US7414473 Class AB folded-cascode amplifier having cascode compensation |
| 08/19/2008 | US7414472 Differential amplifying circuit |
| 08/19/2008 | US7414471 Common-mode technique for a digital I/P class D loop |
| 08/19/2008 | US7414469 Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning |
| 08/19/2008 | US7414468 Amplifier, filter using the same, and radio communication device |
| 08/19/2008 | US7414467 Circuit configuration having a feedback, fully-differential operational amplifier |
| 08/19/2008 | US7414466 Apparatus for reducing offset voltage drifts in a charge amplifier circuit |
| 08/19/2008 | US7414430 Programmable logic device having an embedded differential clock tree |
| 08/19/2008 | US7414234 Measurement of burst mode optical power over multiple bursts |
| 08/19/2008 | US7413932 Power amplifier having high heat dissipation |
| 08/14/2008 | WO2008097820A1 Dual transconductance amplifiers and differential amplifiers implemented using such dual transconductance amplifiers |
| 08/14/2008 | WO2008097758A1 Hybrid filter for audio switching amplifier |
| 08/14/2008 | US20080191807 Signal converter having compensation unit |
| 08/14/2008 | US20080191806 High frequency power amplifier circuit, high frequency power amplifier electronic component and method thereof |
| 08/14/2008 | US20080191805 Electronic Circuit and Method for Manufacturing an Electronic Circuit |
| 08/14/2008 | US20080191804 Two-stage operational amplifier with class ab output stage |
| 08/14/2008 | US20080191803 Variable gain amplifying circuit |
| 08/14/2008 | US20080191802 Low Voltage Operational Transconductance Amplifier Circuits |
| 08/14/2008 | US20080191801 Doherty amplifying apparatus using a harmonic control circuit |
| 08/14/2008 | DE102008006728A1 Klasse-D-Leistungsverstärker Class-D power amplifier |
| 08/13/2008 | EP1955437A1 Small signal amplifier with large signal output boost stage |
| 08/13/2008 | EP1396079B1 Multi-level power amplifier |
| 08/13/2008 | EP0981819B1 Optical read/write apparatus |
| 08/13/2008 | CN101242679A A share audio power amplification circuit for multi-audio source and its control method |
| 08/13/2008 | CN101242165A High pass filter circuit with low corner frequency |
| 08/13/2008 | CN101242162A Variable gain amplifying circuit |
| 08/13/2008 | CN101242160A Two-stage operational amplifier with class ab output stage |
| 08/13/2008 | CN101242159A Systems and methods for power amplifiers with voltage boosting multi-primary transformers |
| 08/13/2008 | CN100411316C Switch apparatus, switchable power amplification apparatus, and mobile communication terminal apparatus |
| 08/13/2008 | CN100411303C Method and apparatus for transformation from impulse code modulation to impulse-width modulation |
| 08/13/2008 | CN100411301C Improved 2-stage large bandwidth amplifier using diodes in the parallel feedback structure |
| 08/13/2008 | CN100411300C Distortion compensator |
| 08/13/2008 | CN100411288C Supply unit and electronic equipment comprising the supply unit |
| 08/12/2008 | US7412219 High-frequency amplifier having simple circuit structure and television tuner using high-frequency amplifier |