| 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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| 07/11/2012 | EP2475095A1 Doherty amplifier |
| 07/11/2012 | EP2475094A1 Doherty amplifier |
| 07/11/2012 | EP2475093A2 System and method for antenna diversity using equal power joint maximal ratio combining |
| 07/11/2012 | EP2474436A2 Switched Beam Antenna Architecture |
| 07/11/2012 | EP2171839B1 Electronic device and a method of biasing a mos transistor in an integrated circuit |
| 07/11/2012 | EP1665699B1 Dual mode multi-slot EGPRS transmitter |
| 07/11/2012 | CN202334448U Audio operation amplifying circuit structure and audio output circuit structure |
| 07/11/2012 | CN202334442U 一种隔爆型放大器 One kind of flameproof amplifier |
| 07/11/2012 | CN202334441U 一种可控衰减预失真电路 A controlled attenuator predistortion circuit |
| 07/11/2012 | CN202334440U 斩波放大电路及多级放大系统 Chopper amplifier and multi-stage amplifier system |
| 07/11/2012 | CN202334439U 矿用密封放大器 Mine sealing amplifier |
| 07/11/2012 | CN102577136A Radio frequency power amplifier with linearizing predistorter |
| 07/11/2012 | CN102577109A Transistor audio power amplifier output stage accelerated circuit |
| 07/11/2012 | CN102577107A Papr (peak-to-average power ratio) determining apparatus and communication apparatus |
| 07/11/2012 | CN102577106A Adjustable circuit architecture |
| 07/11/2012 | CN102577105A Circuit with reference source to control the small signal transconductance of an amplifier transistor |
| 07/11/2012 | CN102577104A Combiner for doherty amplifier |
| 07/11/2012 | CN102577103A Coupler-circulator integrated communication device and doherty amplifier having same |
| 07/11/2012 | CN102577102A Circuits and methods for calibrating offset in an amplifier |
| 07/11/2012 | CN102571657A Digital pre-distortion processing system with sample rate conversion and method thereof |
| 07/11/2012 | CN102570999A Variable gain self-adaptive bias power amplifier based on common-mode feedback |
| 07/11/2012 | CN102570997A Power amplification circuit |
| 07/11/2012 | CN102570992A Radiofrequency amplifier |
| 07/11/2012 | CN102570991A Output matching circuit of radio frequency (RF) power amplifier |
| 07/11/2012 | CN102570990A Overcurrent protection circuit of amplifier output stage |
| 07/11/2012 | CN102570989A Operational amplifier |
| 07/11/2012 | CN102570988A Amplifier device |
| 07/11/2012 | CN102570987A Audio frequency amplifying circuit with improved noise characteristics |
| 07/11/2012 | CN102570986A Method and communication terminal for improving operating efficiency of power amplifier |
| 07/11/2012 | CN102570985A Power amplifying circuit for powerline multicarrier communication systems |
| 07/11/2012 | CN101674054B Power series predistorter and control method thereof |
| 07/11/2012 | CN101626356B Multi-input multi-output (MIMO) terminal and radio-frequency emission method thereof |
| 07/11/2012 | CN101465619B Method and apparatus for restraining D-genus power amplifier noise and D-genus power amplifier with noise suppression |
| 07/11/2012 | CN101405924B Power supply for limited power sources and audio amplifier using power supply |
| 07/10/2012 | US8219361 Vibration analysis |
| 07/10/2012 | US8218776 Surge protection circuit for audio output device |
| 07/10/2012 | US8217723 Low noise amplifier circuit |
| 07/05/2012 | WO2012090547A1 Distortion compensation circuit |
| 07/05/2012 | US20120170773 Amplifier with high-frequency noise removing function, microphone module, and sensor module |
| 07/05/2012 | US20120169419 Receiver with Wide Dynamic Range and Low Power Consumption |
| 07/05/2012 | US20120169418 Low dissipation amplifier |
| 07/05/2012 | US20120169416 Circuit and method for reducing input leakage in chopped amplifier during overload conditions |
| 07/05/2012 | DE102011089308A1 Vorrichtung und Verfahren zum Bereitstellen von Verstärkerlinearitätsinformationen Apparatus and method for providing amplifier linearity information |
| 07/04/2012 | EP2472723A1 Amplifier with non-linear current mirror |
| 07/04/2012 | EP2472719A1 Doherty amplifier |
| 07/04/2012 | EP2472718A1 Method and system to amplify a digital signal |
| 07/04/2012 | EP2471175A1 Linearization circuits and methods for power amplification |
| 07/04/2012 | EP2471174A1 Dual rf channel linearizer channel amplification device, and telecommunication satellite comprising said device |
| 07/04/2012 | EP2471173A2 System and method for amplifying a signal using multiple amplification stages sharing a common bias current |
| 07/04/2012 | CN202309630U 一种宽频带射频放大器 A wideband RF Amplifier |
| 07/04/2012 | CN202309624U 一种双环反馈高线性度可变增益放大器 A Double Loop Feedback high linearity variable gain amplifier |
| 07/04/2012 | CN202309623U 单极性高压线性放大器 Unipolar high-voltage amplifiers |
| 07/04/2012 | CN202309622U 单电源模式的低噪声放大器 Single-supply mode low noise amplifier |
| 07/04/2012 | CN202309621U 一种增强功率放大器线性度及效率的电路 An enhanced linearity and efficiency of the power amplifier circuit |
| 07/04/2012 | CN1987363B Method for correcting an analogue amplifier output signal, amplifier module and measurement device |
| 07/04/2012 | CN102549991A Power supply arrangement for line termination units |
| 07/04/2012 | CN102549919A Protection circuit for power amplifier |
| 07/04/2012 | CN102549918A Dual RF channel linearizer channel amplification device, and telecommunication satellite comprising said device |
| 07/04/2012 | CN102549917A Amplifier bias techniques |
| 07/04/2012 | CN102549916A Dual use transistor |
| 07/04/2012 | CN102549915A Doherty amplifier |
| 07/04/2012 | CN102545800A Signal amplifying circuit and method thereof |
| 07/04/2012 | CN102545799A Adjustable amplification circuit |
| 07/04/2012 | CN102545796A Traveling wave tube linearizer |
| 07/04/2012 | CN102545795A Feed-forward power amplifier on basis of current detection self-adaption method |
| 07/04/2012 | CN102545794A Amplifier current consumption control |
| 07/04/2012 | CN102545793A Weak current amplifier with pA (picoamperes)-mu A(microamperes) range |
| 07/04/2012 | CN102545792A Circuit and method for cancelling preceding stage thermal noise of low noise amplifier |
| 07/04/2012 | CN102545791A Push-pull low noise amplifier and amplifier |
| 07/04/2012 | CN102545790A Method and apparatus for canceling balun amplifier noise |
| 07/04/2012 | CN102545789A Head amplifier for weak signal |
| 07/04/2012 | CN102545788A Multi-way asymmetrical Doherty amplifier |
| 07/04/2012 | CN101977023B Method for debugging and compensating avalanche diode |
| 07/04/2012 | CN101951230B Broadband low noise amplifier |
| 07/04/2012 | CN101951227B Amplifier circuit |
| 07/04/2012 | CN101924524B Differential complementary metal-oxide-semiconductor (CMOS) multi-mode low-noise amplifier with on-chip active Balun |
| 07/04/2012 | CN101834567B Broadband gain adjustable low-noise amplifier |
| 07/04/2012 | CN101785110B RF power device and forming method thereof |
| 07/04/2012 | CN101677230B Three-stage frequency-compensated operational amplifier |
| 07/04/2012 | CN101594326B Pre-distorted radio frequency amplifier |
| 07/04/2012 | CN101411058B Distortion compensation circuit |
| 07/04/2012 | CN101331680B Enhanced low noise amplifier |
| 07/04/2012 | CN101320961B Power amplification circuit |
| 07/04/2012 | CN101305515B Amplifying apparatus |
| 07/04/2012 | CN101252351B Comparator circuit |
| 06/28/2012 | WO2012088520A2 Techniques on input transformer to push the op1db higher in power amplifier design |
| 06/28/2012 | WO2012088300A2 Power amplifier control circuit |
| 06/28/2012 | WO2012086830A1 Amplifier device and method of controlling same |
| 06/28/2012 | WO2012086379A1 Amplifier circuit and wireless communication device |
| 06/28/2012 | WO2012086015A1 Amplifying device |
| 06/28/2012 | WO2012083546A1 Signal processing arrangement and signal processing method |
| 06/28/2012 | WO2012021461A3 System and method for biasing a power amplifier |
| 06/28/2012 | US20120162000 Switched capacitor circuit and stage circuit for ad converter |
| 06/28/2012 | US20120161880 TECHNIQUES ON INPUT TRANSFORMER TO PUSH THE OP1dB HIGHER IN POWER AMPLIFIER DESIGN |
| 06/28/2012 | US20120161875 Amplification Circuit |
| 06/28/2012 | US20120161863 Amplifier providing power recovery from a narrow-band antenna |
| 06/28/2012 | DE102010061060A1 Leistungsverstärker für Hochfrequenzanwendungen im Schaltermodus Power amplifier for high frequency applications in switch mode |
| 06/28/2012 | CA2781700A1 Signal processing arrangement and signal processing method |
| 06/27/2012 | EP2469706A2 Low noise CMOS transmitter circuit with high range of gain |
| 06/27/2012 | EP2469236A1 Active neutralisation device. |