| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 12/26/2006 | US7154330 Stability compensation for adjustable gain amplifier |
| 12/26/2006 | US7154308 Driver circuit with gradual voltage ramp up and ramp down |
| 12/21/2006 | WO2006134858A1 Heat dissipating graphite sheet and electronic device using same |
| 12/21/2006 | WO2006134533A1 A device for receiving a radio frequency signal in a frequency band |
| 12/21/2006 | WO2006134214A1 A power amplifier of a transmitter |
| 12/21/2006 | WO2006031704A3 Amplifier circuit and method for reducing voltage and current noise |
| 12/21/2006 | US20060284682 High efficiency power amplifier |
| 12/21/2006 | US20060284675 Variable distortion limiter using clip detect predictor |
| 12/21/2006 | US20060284671 Variable gain amplifier circuit, method of correcting DC offset of the variable gain amplifying circuit, and radio receiving apparatus |
| 12/20/2006 | EP1734653A1 High efficiency power amplifier |
| 12/20/2006 | EP1116324B1 Differential amplifier with gain linearization through transconductance compensation |
| 12/20/2006 | CN2849790Y Auxiliary circuit, voltage regulator and circuit apparatus for improving rejection ratio of low frequency power |
| 12/20/2006 | CN1883174A System and method for frequency modulation in a modem |
| 12/20/2006 | CN1882127A Multi-mode digital linearization device and method |
| 12/20/2006 | CN1881786A A power multiplier system and method |
| 12/20/2006 | CN1881785A DC voltage bias circuit and its application in integrated circuit |
| 12/19/2006 | US7151708 Semiconductor integrated circuit and operational amplifier |
| 12/19/2006 | US7151411 Amplifier system and method |
| 12/19/2006 | US7151408 Method for generating a radio-frequency alternating voltage and an associated radio-frequency power amplifier |
| 12/19/2006 | US7151407 Switched-mode power amplifier using lumped element impedance inverter for parallel combining |
| 12/19/2006 | US7151405 Estimating power amplifier non-linearity in accordance with memory depth |
| 12/19/2006 | US7151403 Adaptive self-calibration method and apparatus |
| 12/14/2006 | WO2006132315A1 Buffer circuit |
| 12/14/2006 | WO2006132202A1 Audio signal amplifying circuit and electronic device using the same |
| 12/14/2006 | WO2006132036A1 A/d converter |
| 12/14/2006 | WO2006131595A1 By-pass arrangement of a low noise amplifier |
| 12/14/2006 | WO2006033622A8 Tunable predistorter |
| 12/14/2006 | WO2006016973A3 A feed forward amplifier with multiple cancellation loops capable of reducing intermodulation distortion and receive band noise |
| 12/14/2006 | US20060279359 High-frequency power amplifier circuit and electronic part for communication |
| 12/14/2006 | US20060279353 Chopper stabilized amplifier without DC output ripple |
| 12/14/2006 | DE112004001995T5 Techniken zum Verringern der Treiberimpedanz und zum Ausbilden eines verringerten DC-Offsets Techniques for reducing the driving impedance and for forming a reduced DC offset |
| 12/13/2006 | EP1732209A1 Distortion cancellation in a transimpedance amplifier circuit |
| 12/13/2006 | EP1732208A1 Power series type predistorter for multi-frequency bands operation |
| 12/13/2006 | EP1732207A1 Multi-Band lookup table type predistorter |
| 12/13/2006 | EP1732206A1 Band selection type feed forward amplifier |
| 12/13/2006 | EP1730842A2 Digital linearizing system |
| 12/13/2006 | EP1340314B1 Linearization method and amplifier arrangement |
| 12/13/2006 | CN2847693Y Carrier cancellation unit circuit for 3G system broad band power amplifying predistortion correcting circuit |
| 12/13/2006 | CN1879296A Transistor arrangement, integrated circuit and method for operating field effect transistors |
| 12/13/2006 | CN1879295A Predistortion control device and method, assembly including the predistortion control device |
| 12/13/2006 | CN1879294A 功率放大器预失真器训练 Power amplifier predistortion training |
| 12/13/2006 | CN1879293A Method and apparatus for realizing a low noise amplifier |
| 12/13/2006 | CN1879292A Television switch module |
| 12/13/2006 | CN1877987A Power series type predistorter for multi-frequency bands operation |
| 12/13/2006 | CN1877986A Distortion cancellation in a transimpedance amplifier circuit |
| 12/13/2006 | CN1877985A Method and device for self-adaptive regulation of power amplifier offset voltage |
| 12/13/2006 | CN1289738C Washing machine and music volume control method thereof |
| 12/12/2006 | US7149497 Radio signal receiving device |
| 12/12/2006 | US7149317 CMOS high impedance circuit |
| 12/12/2006 | US7149257 Digital predistortion system and method for correcting memory effects within an RF power amplifier |
| 12/12/2006 | US7149246 Method and apparatus for reducing oscillator pull in a CMOS wireless transceiver integrated circuit |
| 12/12/2006 | US7148751 Handset radiofrequency front end module in fine pitch quad flat no lead (FQFP-N) package |
| 12/12/2006 | US7148745 Sleep mode recovery |
| 12/12/2006 | US7148744 Calibration technique for variable-gain amplifiers |
| 12/07/2006 | WO2006129597A1 Drive circuit for supplying, based on control signal, current to load, and mobile information terminal incorporating the same |
| 12/07/2006 | WO2006128345A1 Negative feedback circuit and method and apparatus for realizing impedance match of transmission line on chip by using same |
| 12/07/2006 | US20060273858 Methods and apparatus for reducing output current oscillations of a driver provided with circuitry that senses and responds to excessive current draws of an output stage of the driver |
| 12/07/2006 | US20060273855 Noise sensitive volume control device, audio device and noise sensitive volume control method |
| 12/07/2006 | US20060273854 Band selection type feed forward amplifier |
| 12/07/2006 | US20060273853 Feed forward amplifier for multiple frequency bands |
| 12/07/2006 | US20060273852 Amplifiers |
| 12/07/2006 | US20060273850 Operational amplifier circuit with controllable intermediate circuitry set therein |
| 12/07/2006 | US20060273849 Operational amplifier circuit having adjustable bias current |
| 12/06/2006 | EP1729409A1 Feed forward amplifier for multiple frequency bands |
| 12/06/2006 | EP1728320A1 Method and apparatus for doherty amplifier biasing |
| 12/06/2006 | EP1728319A2 Low-complexity nonlinear filters |
| 12/06/2006 | EP1728084A1 Measuring circuit for the output of a power amplifier and a power amplifier comprising the measuring circuit |
| 12/06/2006 | EP1579568A4 Precorrection of a nonlinear amplifier |
| 12/06/2006 | EP1287612B1 Device and method for pre-treating a signal to be transmitted using a non-linear amplifier with an upstream band-pass filter |
| 12/06/2006 | EP1040570B1 A current steering variable gain amplifier with linearizer |
| 12/06/2006 | CN2845312Y Multicarrier peak inhibitor |
| 12/06/2006 | CN2845311Y Device for reducing multicarrier peak |
| 12/06/2006 | CN1875594A Dual mode multi-slot EGPRS transmitter |
| 12/06/2006 | CN1874181A Band selection type feed forward amplifier |
| 12/06/2006 | CN1874180A Feed forward amplifier for multiple frequency bands |
| 12/06/2006 | CN1874144A Multi-band lookup table type predistorter |
| 12/06/2006 | CN1288839C Fully differential, variable-gain amplifier and a multidimensional amplifier arrangement |
| 12/06/2006 | CN1288837C Method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio |
| 12/06/2006 | CN1288836C Self-oscillation power amplifier |
| 12/06/2006 | CN1288835C Method for linear power amplifier on wide frequency band |
| 12/05/2006 | US7146194 Amplifying circuit, speaker system, and mobile information terminal employing amplifying circuit |
| 12/05/2006 | US7146015 Frequency threshold audio activity detector |
| 12/05/2006 | US7145962 Predistortion digital linearizer and gain controlling method thereof |
| 12/05/2006 | US7145399 Type-II all-digital phase-locked loop (PLL) |
| 12/05/2006 | US7145397 Output overvoltage protection circuit for power amplifier |
| 12/05/2006 | US7145394 High frequency power amplifier module, and wireless communication system |
| 12/05/2006 | US7145391 Bias current cancellation for differential amplifiers |
| 12/05/2006 | US7145387 Composite power amplifier |
| 12/05/2006 | US7145385 Single chip power amplifier and envelope modulator |
| 12/05/2006 | US7145384 Pulse length matched filter |
| 11/30/2006 | WO2006126559A1 Amplifying apparatus |
| 11/30/2006 | WO2006126429A1 Servo amplifier, and its overload protecting method |
| 11/30/2006 | WO2006062831A3 Voltage clamp for improved transient performance of a collector voltage controlled power amplifier |
| 11/30/2006 | WO2006052377A3 System and method for forward path gain control in a digital predistortion linearized transmitter |
| 11/30/2006 | WO2005072331A3 Equalized signal path with predictive subtraction signal |
| 11/30/2006 | US20060270365 Method and device for power amplifier with high accuracy of an ouput signal |
| 11/30/2006 | US20060267915 Amplifier, data driver and display apparatus having the same |
| 11/30/2006 | US20060267684 High-frequency power amplifier and radio communication equipment using the same |
| 11/30/2006 | US20060267683 Power efficient amplifier |
| 11/30/2006 | US20060267682 Efficient power amplification system |