| 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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| 03/18/2009 | CN100471045C An implementation method for pre-distortion of non-linear devices |
| 03/18/2009 | CN100471044C Frequency switching circuit for restraining the D power amplifier POP sound and its method |
| 03/18/2009 | CN100471043C Amplifier |
| 03/18/2009 | CN100471042C Methods of optimising power amplifier efficiency and closed-loop power amplifier controllers |
| 03/17/2009 | US7505742 Battery life extending technique for mobile wireless applications using bias level control |
| 03/17/2009 | US7505530 Pre-distortion using a by-pass signal |
| 03/17/2009 | US7504880 Amplifier circuit |
| 03/17/2009 | US7504874 Transistor arrangement with temperature compensation and method for temperature compensation |
| 03/12/2009 | WO2009032505A1 Method of using integrated power amplifier |
| 03/12/2009 | WO2009032415A1 Method for designing input circuitry for transistor power amplifier |
| 03/12/2009 | WO2009031192A1 Amplifier circuit |
| 03/12/2009 | WO2009031097A1 Multi-way doherty amplifier |
| 03/12/2009 | WO2009031042A2 N-way doherty distributed power amplifier |
| 03/12/2009 | US20090066421 Internal frequency compensation circuit for integrated circuit controllers |
| 03/12/2009 | US20090066418 Amplifier circuit and communication device |
| 03/11/2009 | EP2033314A2 Differential amplifier with over-voltage protection and method |
| 03/11/2009 | EP2033307A1 Integrated implementation of a voltage boost follower and method therefor |
| 03/11/2009 | EP2033306A1 Switched mode power amplification |
| 03/11/2009 | EP1997222A4 Enhanced efficiency feed foward power amplifier with delay mismatched error cancellation loop |
| 03/11/2009 | EP1704452B1 Transistor arrangement with temperature compensation and method for temperature compensation |
| 03/11/2009 | EP1588484B1 Pulse modulated power converter |
| 03/11/2009 | EP1350313B1 Gain and bandwidth enhancement for rf power amplifier package |
| 03/11/2009 | CN201207634Y Dead zone time modulation circuit and audio power amplifier |
| 03/11/2009 | CN101385238A D type amplifier and method thereof |
| 03/11/2009 | CN101383592A Power amplifier and method for reducing common mode noise thereof |
| 03/11/2009 | CN100468964C Power amplification apparatus, and mobile communication terminal apparatus |
| 03/11/2009 | CN100468962C Amplifier circuit |
| 03/11/2009 | CN100468961C Differential amplifier, output circuit, display device and data driver |
| 03/11/2009 | CN100468957C Method for self-adaptive cancellation control of feedforward linear power amplifier optimizing model |
| 03/11/2009 | CN100468956C Multi-band feed-forward amplifier and adjustment method therefor |
| 03/11/2009 | CN100468955C Cascode and serial low-noise amplifier implemented by single-end input and differential output |
| 03/11/2009 | CN100468954C Sequential DC offset correction for amplifier chain |
| 03/11/2009 | CN100468271C Accurate pure AC voltage/current convertor with low noise |
| 03/10/2009 | US7502601 Power amplifier with digital power control and associated methods |
| 03/10/2009 | US7502600 Dynamic bias for RF power amplifiers |
| 03/10/2009 | US7502599 Cartesian loop transmitter and method of adjusting an output level of such transmitter |
| 03/10/2009 | US7502569 Optical receiver preamplifier |
| 03/10/2009 | US7501914 Bias circuit |
| 03/10/2009 | US7501896 High frequency power amplifier circuit, high frequency power amplifier electronic component and method thereof |
| 03/10/2009 | US7501890 Multi-amplifier circuit |
| 03/10/2009 | US7501887 Controllable amplifier and its use |
| 03/05/2009 | WO2009029284A1 Differential pair circuit |
| 03/05/2009 | WO2009027916A2 Integrated doherty amplifier |
| 03/05/2009 | WO2008142051A3 Switchable multiband lna design |
| 03/05/2009 | WO2005036733A3 Differential amplifier arrangement |
| 03/05/2009 | US20090058552 High-frequency module, and mobile telephone and electronic device provided therewith |
| 03/05/2009 | US20090058521 System and method of digital linearization in electronic devices |
| 03/05/2009 | US20090058520 Amplifier circuit |
| 03/05/2009 | US20090058492 Electronic isolator |
| 03/05/2009 | DE102008032897A1 Nitridhalbleitervorrichtung, Doherty-Verstärker und Drainspannungsgesteuerter Verstärker Nitride semiconductor, Doherty amplifier and drain voltage controlled amplifier |
| 03/04/2009 | EP2030321A1 Transmitter with pre-conditioning of amplifier signal |
| 03/04/2009 | EP2030317A1 High efficiency linear power amplifiers with load compensation |
| 03/04/2009 | EP1563620A4 Lower complexity layered modulation signal processor |
| 03/04/2009 | EP1561291B1 Amplitude and phase matching for layered modulation reception |
| 03/04/2009 | CN101379697A Power amplifier with digital pre-distorsion |
| 03/04/2009 | CN101379696A Power amplifier |
| 03/04/2009 | CN101379695A Method and system for transmitter envelope delay calibration |
| 03/04/2009 | CN101378265A High-frequency module, and mobile telephone and electronic device provided therewith |
| 03/04/2009 | CN101378248A Low noise amplifier and tuner including the same |
| 03/04/2009 | CN101378247A Low conductor amplifier |
| 03/04/2009 | CN101378074A Nitride semiconductor device, doherty amplifier and drain voltage controlled amplifier |
| 03/04/2009 | CN100466482C Method for moving communication terminal and optimizing an operating point of a power amplifier |
| 03/04/2009 | CN100466464C Method and apparatus used for controlling predistortion linearizer based on power series |
| 03/04/2009 | CN100466463C Equipment used in a wireless transmitter |
| 03/04/2009 | CN100466462C Dynamic bias circuit of a radio-frequency amplifier |
| 03/04/2009 | CN100466048C circuit and method to drive a liquid crystal display with low power |
| 03/03/2009 | US7499502 Amplifier, information communication apparatus and amplification method |
| 03/03/2009 | US7499501 Symbol error based compensation methods for nonlinear amplifier distortion |
| 03/03/2009 | US7498877 Power amplifier with automatic switching function |
| 03/03/2009 | US7498875 Technique to improve the gain and signal to noise ratio in CMOS switched capacitor amplifiers |
| 03/03/2009 | US7498874 Glitch-free start-up with a tracking pin |
| 03/03/2009 | US7498847 Output driver that operates both in a differential mode and in a single mode |
| 02/26/2009 | WO2009026469A1 High-swing operational amplifier output stage using adaptive biasing |
| 02/26/2009 | WO2009026413A1 Active circuits with load linearization |
| 02/26/2009 | WO2009025795A1 Multi-mode power amplifier with high efficiency under backoff operation |
| 02/26/2009 | WO2009025665A1 Amplifier circuit and method therefor |
| 02/26/2009 | WO2009025021A1 Transmission circuit, wireless base station device, and wireless terminal device |
| 02/26/2009 | WO2009025008A1 Amplifier |
| 02/26/2009 | US20090052590 Layered modulation for digital signals |
| 02/26/2009 | US20090052572 Method and System for Transmitting Signals with Reduced Spurious Emissions |
| 02/26/2009 | US20090051438 Amplifying system |
| 02/26/2009 | US20090051426 Large-Dynamic-Range Lookup Table for a Transmitter Predistorter and System and Method Employing the Same |
| 02/26/2009 | US20090051425 Predistortion system and method based on look up table interpolation |
| 02/26/2009 | US20090051424 Active circuits with load linearization |
| 02/26/2009 | DE102008033179A1 Verstärker und Verfahren zum Betreiben desselben Of the same amplifier and method of operating |
| 02/25/2009 | EP2028760A1 A low side driver |
| 02/25/2009 | EP2027649A2 System and method for providing a transmitter for polar modulation and power amplifier linearization |
| 02/25/2009 | EP1510001B1 An amplifier circuit, gyrator circuit, filter device and method for amplifying a signal |
| 02/25/2009 | CN101375493A Polar modulation apparatus |
| 02/25/2009 | CN101373954A Method for amplifying voltage signal and operational amplifier |
| 02/25/2009 | CN101373953A Power amplifier |
| 02/25/2009 | CN101373952A Low noise amplifier capable of implementing differential amplification and method thereof |
| 02/25/2009 | CN100464497C Electronic amplifier circuit |
| 02/25/2009 | CN100464496C Integrated circuit and optical pickup device for multistage cascade amplifier |
| 02/24/2009 | US7496334 Transmitter apparatus and wireless communication apparatus |
| 02/24/2009 | US7496152 Adaptive control apparatus |
| 02/24/2009 | US7496151 Transmitting circuit, communication equipment, audio equipment, video equipment, and transmitting method |
| 02/24/2009 | US7496063 Time division multiplexing radio system for controlling transmission power |
| 02/24/2009 | US7495511 Input system for a variable gain amplifier having class-AB transconductance stages |
| 02/24/2009 | US7495509 Audio power amplifier |