| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 03/20/2008 | US20080069025 Signal Repeater System |
| 03/20/2008 | US20080068089 Differential amplifier circuit with symmetric circuit topology |
| 03/20/2008 | US20080068088 Amplifier circuit |
| 03/20/2008 | US20080068086 High frequency power amplifier circuit and electronic component for high frequency power amplifier |
| 03/20/2008 | US20080068085 Wide input common mode for input bias current cancellation |
| 03/20/2008 | US20080068084 Serial Link Output Stage Differential Amplifier and Method |
| 03/20/2008 | US20080068083 Continuous time common mode feedback circuit, system, and method |
| 03/20/2008 | US20080068082 Amplifier circuit and communication device |
| 03/20/2008 | US20080068081 High-voltage operational amplifier input stage and method |
| 03/20/2008 | US20080068079 Efficient Narrow Band Amplification Using Phase Amplifier |
| 03/20/2008 | US20080068078 Doherty amplifier |
| 03/20/2008 | US20080068075 Trifferential amplifier and trifferential amplifier system |
| 03/20/2008 | US20080068074 Efficient Narrow Band Amplification Using Linear Amplifier |
| 03/19/2008 | EP1901425A1 Amplifier with increased bandwidth and method thereof |
| 03/19/2008 | EP1901424A1 Circuit for suppressing power-up noises |
| 03/19/2008 | EP1900102A2 Methods and apparatus for implementing and/or using amplifiers and/or for performing various amplification related operations |
| 03/19/2008 | CN201039448Y A novel MP5 electronic tube power amplifier |
| 03/19/2008 | CN201039126Y Car MP3 intelligent frequency modulation transmitter |
| 03/19/2008 | CN201039094Y A high-gain RF low-noise amplifier |
| 03/19/2008 | CN201039093Y Low-frequency time code front amplifier |
| 03/19/2008 | CN201039092Y A linear amplifier and its power impulse power |
| 03/19/2008 | CN201039089Y RF front feedback power amplifier |
| 03/19/2008 | CN201039087Y An onboard power amplification circuit |
| 03/19/2008 | CN101147424A Offset correction circuit for voltage-controlled current source |
| 03/19/2008 | CN101145765A Dynamically accelerated operational amplifier and method thereof |
| 03/19/2008 | CN101145764A Output circuit of calculation amplifier |
| 03/19/2008 | CN101145763A Rf放大器 Rf Amplifier |
| 03/19/2008 | CN101145762A Amplifier and method for adding bandwidth via current injection |
| 03/19/2008 | CN101145761A Power amplifier temperature compensation device and method |
| 03/18/2008 | US7346324 Grounded-emitter circuit, and high-frequency receiver and high-frequency transmitter using the same |
| 03/18/2008 | US7346318 High frequency power amplifier component and radio communication system |
| 03/18/2008 | US7345548 Radiofrequency amplifier device, in particular for cellular mobile telephone |
| 03/18/2008 | US7345545 Enhancement mode transceiver and switched gain amplifier integrated circuit |
| 03/18/2008 | US7345544 Method and apparatus for common mode control |
| 03/18/2008 | US7345543 Fast transconductance amplifier |
| 03/18/2008 | US7345542 Circuit and method for avoiding circuit performance degradation caused by time-variable thermal imbalances |
| 03/18/2008 | US7345541 Apparatus for variable gain amplifiers and mixers |
| 03/18/2008 | US7345538 Measuring circuit for the output of a power amplifier and a power amplifier comprising the measuring circuit |
| 03/18/2008 | US7345535 Power amplification apparatus of portable terminal |
| 03/18/2008 | US7345533 PWM digital amplifier with high-order loop filter |
| 03/18/2008 | US7345532 PWM digital amplifier with high-order loop filter |
| 03/18/2008 | US7345531 Comparator circuit, related method of comparing a vector to comparison boundaries and transmitter employing the same |
| 03/18/2008 | US7345528 Method and apparatus for improved clock preamplifier with low jitter |
| 03/13/2008 | WO2008030859A2 Reduction of voltage spikes in switching half-bridge stages |
| 03/13/2008 | WO2008029091A2 Switching amplifier |
| 03/13/2008 | WO2008029030A1 Programmable voltage generator |
| 03/13/2008 | US20080064359 Amplifier, filter using the same, and radio communication device |
| 03/13/2008 | US20080063219 Controlling audio output of a mobile terminal |
| 03/13/2008 | US20080062295 Photoelectric conversion apparatus and image sensing system |
| 03/13/2008 | US20080061887 Apparatus for converting single-ended signal into differential signal |
| 03/13/2008 | US20080061886 Amplifier arrangement and method for amplifying a signal |
| 03/13/2008 | US20080061885 Tunable Low Noise Amplifier |
| 03/13/2008 | US20080061883 Thermal tail compensation |
| 03/13/2008 | US20080061882 Amplifier Coupling on a Reduced Area |
| 03/13/2008 | US20080061881 Differential amplifier circuit, voltage regulator using the differential amplifier circuit, and method for controlling the differential amplifier circuit |
| 03/13/2008 | US20080061880 Input buffer design using common-mode feedback (CMFB) |
| 03/13/2008 | US20080061879 Filter circuit and method thereof |
| 03/13/2008 | US20080061878 Differential amplifier and sampling and holding circuit |
| 03/13/2008 | US20080061877 Common mode regulation for thermal tail compensation |
| 03/13/2008 | US20080061847 Driver circuit and method of controlling the same |
| 03/13/2008 | US20080061840 Receiver circuit having compensated offset voltage |
| 03/13/2008 | US20080061745 Differential amplifier circuit and electric charge control apparatus using differential amplifier circuit |
| 03/13/2008 | US20080061218 Image Sensor, Module and Electronic Device |
| 03/13/2008 | US20080061217 Wide-range linear output photo sensor circuit |
| 03/13/2008 | DE202007013037U1 Struktur eines digitalen Verstärkers Structure of a digital amplifier |
| 03/13/2008 | DE102007038379A1 Gemeinsam benutzter Verstärkerschaltkreis Shared amplifier circuit |
| 03/13/2008 | DE102004013139B4 Offsetkompensationsschaltkreis, der eine Offsetspannung eines Treiberschaltkreises kompensiert, und Flüssigkristallanzeigevorrichtung, die den Offsetkompensationsschaltkreis verwendet Offset compensation circuit which compensates an offset voltage of a driver circuit and liquid crystal display apparatus using the offset compensation circuit |
| 03/12/2008 | EP1898526A2 Low-pass filter and voltage-current conversion circuit used in the same |
| 03/12/2008 | EP1898523A1 Switchable power divider circuit and power amplifier module |
| 03/12/2008 | EP1898522A2 Power amplifier system and mobile phone terminal using the same |
| 03/12/2008 | EP1898521A1 Power amplifying apparatus and mobile communication terminal |
| 03/12/2008 | EP1897217A1 Wide dynamic range switching variable gain amplifier and control |
| 03/12/2008 | EP1897216A2 Automatic bias control circuit for linear power amplifiers |
| 03/12/2008 | CN201035102Y Device for testing op-amp offset voltage category |
| 03/12/2008 | CN101142740A Arrangement for amplifying a PWM input signal |
| 03/12/2008 | CN101141714A Method and device of base station compatible with high-gain tower amplifier |
| 03/12/2008 | CN101141117A Differential amplifier circuit, voltage regulator using the differential amplifier circuit, and method for controlling the differential amplifier circuit |
| 03/12/2008 | CN101141116A Audio reproducing apparatus and method |
| 03/12/2008 | CN101141115A High-power MOSFET tube security protection method and circuit in radio frequency emitting circuit |
| 03/12/2008 | CN101141114A CMOS self-adaptive biasing circuit |
| 03/12/2008 | CN100375391C Double-usage of integrated circuit tube pin and signal switch over on the pin |
| 03/12/2008 | CN100375390C Semiconductor circuit |
| 03/12/2008 | CN100375294C RF amplifier circuit and MOS field-effect transistor |
| 03/11/2008 | US7343256 Configurable voltage regulator |
| 03/11/2008 | US7343138 Compensating for load pull in electromagentic signal propagation using adaptive impedance matching |
| 03/11/2008 | US7343103 Apparatus and method for detecting beam power in optical drive |
| 03/11/2008 | US7343015 Method and apparatus for high fidelity wireless stereophonic transmission utilizing dual frequency carriers |
| 03/11/2008 | US7342458 Negative gain transductance amplifier circuit |
| 03/11/2008 | US7342457 Cross-differential amplifier |
| 03/11/2008 | US7342456 DC-bias network for a distributed amplifier |
| 03/11/2008 | US7342455 Temperature sensor insensitive to device offsets with independent adjustment of slope and reference temperature |
| 03/11/2008 | US7342453 Cascode circuit |
| 03/11/2008 | US7342452 Control circuit for operational amplifier and method thereof |
| 03/11/2008 | US7342451 System for logarithmically controlling multiple variable gain amplifiers |
| 03/11/2008 | US7342450 Slew rate enhancement circuitry for folded cascode amplifier |
| 03/11/2008 | US7342449 Differential amplifier, and data driver of display device using the same |
| 03/11/2008 | US7342448 Power output stage |
| 03/11/2008 | US7342447 Systems and methods for driving an output transistor |
| 03/11/2008 | US7342444 Power amplifying apparatus using asymmetric power drive |
| 03/11/2008 | US7342432 Mixer circuit having improved linearity and noise figure |