| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 07/27/2005 | CN1645746A Data converter and data conversion method, and transmitter circuit, communications device and electronic device using the same |
| 07/27/2005 | CN1645742A Digital temperature compensating method and circuit for analog computing amplifier |
| 07/27/2005 | CN1645741A Low-noise differential bias circuit and differential signal processing apparatus |
| 07/26/2005 | US6922553 Method and circuit for obtaining field strength information |
| 07/26/2005 | US6922552 Linearization method and signal processing device |
| 07/26/2005 | US6922474 Shock sound prevention circuit |
| 07/26/2005 | US6922107 Dual (constant voltage/constant current) bias supply for linear power amplifiers |
| 07/26/2005 | US6922106 Divided-voltage FET power amplifiers |
| 07/26/2005 | US6922105 Operational amplifier |
| 07/26/2005 | US6922104 Power amplifier distortion compensation apparatus and method thereof |
| 07/26/2005 | US6922102 High efficiency amplifier |
| 07/26/2005 | US6922100 Method and apparatus for switching amplification having variable sample point and variable order correction |
| 07/26/2005 | US6922093 Radio frequency amplifier and method of driving the same |
| 07/21/2005 | WO2005067149A1 A switched capacitor circuit compensation apparatus and method |
| 07/21/2005 | WO2005067139A1 Amplifier |
| 07/21/2005 | WO2005065394A2 Greedy adaptive signature discrimination system and method |
| 07/21/2005 | WO2005055415A3 Single chip power amplifier and envelope modulator |
| 07/21/2005 | US20050159119 Reflected power suppression circuit |
| 07/21/2005 | US20050157814 Wideband enhanced digital injection predistortion system and method |
| 07/21/2005 | US20050157813 Methods and apparatus for signal distortion correction |
| 07/21/2005 | US20050156672 High frequency power amplifier circuit |
| 07/21/2005 | US20050156671 Method and apparatus for compensating and improving efficiency in a variable power amplifier |
| 07/21/2005 | US20050156670 Method and apparatus for optimization of amplifier with adjustable output range |
| 07/21/2005 | US20050156668 Amplifier, data driver and display apparatus having the same |
| 07/21/2005 | US20050156665 Class-D amplifier |
| 07/21/2005 | US20050156662 Amplifier predistortion and autocalibration method and apparatus |
| 07/21/2005 | DE10360347A1 Symmetrischer Gegentaktverstärker Symmetrical push-pull amplifier |
| 07/21/2005 | DE102004057793A1 Digitale speichergestützte Vorverzerrungstechnik Digital memory-based predistortion technique |
| 07/20/2005 | EP1554800A1 Means for limiting an output signal of an amplifier stage |
| 07/20/2005 | CN1643864A Transmitting method and transmitting apparatus |
| 07/20/2005 | CN1643829A RF transmitters with saturation detection and correction and methods therefor |
| 07/20/2005 | CN1643799A Direct conversion of low power high linearity receiver |
| 07/20/2005 | CN1643785A Amplifier and frequency converter |
| 07/20/2005 | CN1643783A Adaptive digital pre-distortion using amplifier model that incorporates frequency-dependent non-linearities |
| 07/20/2005 | CN1643782A An implementation method for pre-distortion of non-linear devices |
| 07/20/2005 | CN1643781A Arrangement for reducing non-linear distortions in an output signal of an amplifier stage |
| 07/20/2005 | CN1643780A Transistor assembly |
| 07/20/2005 | CN1642000A Amplifier circuit |
| 07/20/2005 | CN1641999A Amplifier circuit for capacitive transducers |
| 07/20/2005 | CN1641998A Switchable gain amplifier |
| 07/20/2005 | CN1212045C High eficiency audio frequency transmission channel |
| 07/20/2005 | CN1211920C Electrical apparatus of shielding plate and emitting device for filtering electric signal at two side of shielding plate |
| 07/20/2005 | CN1211918C Broadcast transmission system with sample and correction arrangement for correcting distortion |
| 07/20/2005 | CN1211917C Broadcast transmission system with distributed correction |
| 07/19/2005 | US6919870 Driving circuit |
| 07/19/2005 | US6919767 Circuit arrangement for low-noise fully differential amplification |
| 07/19/2005 | US6919765 Amplifier linearization by pre-distorting a decomposed input signal |
| 07/19/2005 | US6919764 Amplifier control system with statistical enhancement of resolution of digital control signals |
| 07/19/2005 | US6919762 High frequency power amplifier electric parts and radio telecommunication system |
| 07/14/2005 | WO2005064877A1 Digital rf modulator comprising a phase or frequency return path |
| 07/14/2005 | WO2005064789A1 Apparatus, methods and articles of manufacture for a dual mode amplifier |
| 07/14/2005 | WO2005064788A1 Power amplifier with serial interface and digital power control and associated methods |
| 07/14/2005 | US20050152472 Method for producing a transmission signal |
| 07/14/2005 | US20050152471 Transmitting device |
| 07/14/2005 | US20050151589 Amplifier circuit for capacitive transducers |
| 07/14/2005 | US20050151586 Power amplifier |
| 07/14/2005 | US20050151585 Gate control circuit with soft start/stop function |
| 07/14/2005 | US20050151569 Output circuit and operational amplifier |
| 07/14/2005 | DE19919945B4 Kopfleseverstärkerschaltung Head read amplifier circuit |
| 07/14/2005 | DE102004002854B3 Amplifier circuit, especially for amplifying voltage produced by photodiode, contains input stage with level-dependent operation, operational amplifier, potential divider, impedance and transistor |
| 07/13/2005 | EP1553696A1 Amplifier circuit for capacitive transducers |
| 07/13/2005 | EP1552687A1 Automatically setting an operative state of a wideband amplifier |
| 07/13/2005 | EP1552618A2 Low noise switching voltage regulator |
| 07/13/2005 | EP1552605A2 Forward amplifiers |
| 07/13/2005 | EP1552604A2 Apparatus, methods and articles of manufacture for linear signal modification |
| 07/13/2005 | EP1552603A1 A power amplifier system |
| 07/13/2005 | EP1552602A2 Enhanced efficiency ldmos based feed forward amplifier |
| 07/13/2005 | CN1640086A Frequency-dependent magnitude pre-distortion for reducing spurious emissions in communication networks |
| 07/13/2005 | CN1639967A Front stage amplifier with different modes |
| 07/13/2005 | CN1639966A Method of adjusting gain and current consumption of a power amplifier circuit while maintaining linearity |
| 07/13/2005 | CN1638292A Transmitting device |
| 07/13/2005 | CN1638127A 半导体集成电路器件 The semiconductor integrated circuit device |
| 07/13/2005 | CN1210977C Method and apparatus for transmitting signal digital predistortion, frequency characteristic compensation and feed forward linearization |
| 07/13/2005 | CN1210967C Linear power amplification method and power amplifier unit based on feedforward technique |
| 07/13/2005 | CN1210874C System for closed loop power control using linear or non-linear power amplifier |
| 07/13/2005 | CN1210864C High-gain complementary metal oxide operation amplifier |
| 07/13/2005 | CN1210636C Temp. characteristic compensation device |
| 07/12/2005 | US6917903 Method for removing pseudo signal and program for removing pseudo signal |
| 07/12/2005 | US6917246 Doherty bias circuit to dynamically compensate for process and environmental variations |
| 07/12/2005 | US6917244 Power control for a switching mode power amplifier |
| 07/12/2005 | US6917243 Integrated power amplifier circuit |
| 07/12/2005 | US6917242 Power amplifier |
| 07/12/2005 | US6917241 Amplifier circuit, transmission device, amplification method, and transmission method |
| 07/12/2005 | US6917233 Limiting amplifier and method for amplifying an input signal |
| 07/12/2005 | CA2298992C Temperature compensated high performance oscillator |
| 07/12/2005 | CA2199708C Efficient linear power amplification |
| 07/07/2005 | WO2005062463A1 Biased darlington transistor pair, method, and system |
| 07/07/2005 | WO2005062061A1 A broad-bandwidth low noise integrator circuit |
| 07/07/2005 | WO2005060672A2 Gate control circuit with soft start/stop function |
| 07/07/2005 | WO2005060596A2 A transmitter for modulation distortion compensation |
| 07/07/2005 | WO2005060489A2 Linearized trans-impedance amplifier |
| 07/07/2005 | US20050149462 System and method of separating signals |
| 07/07/2005 | US20050149296 Greedy adaptive signature discrimination system and method |
| 07/07/2005 | US20050149151 Switched resonant ultrasonic power amplifier system |
| 07/07/2005 | US20050148307 Direct outphasing modulator |
| 07/07/2005 | US20050146389 Split cascode line amplifier for current-mode signal transmission |
| 07/07/2005 | US20050146382 Differential amplifier with improved frequency characteristic |
| 07/07/2005 | US20050146380 Analysis apparatus for semiconductor LSI circuit |
| 07/07/2005 | US20050146374 Semiconductor integrated circuit device |
| 07/07/2005 | US20050146370 Level shifter |