| 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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| 02/20/2008 | CN101127511A A self-adapted automatic adjusting method and its module for low noise amplifier |
| 02/20/2008 | CN101127510A Differential input class D amplifier |
| 02/20/2008 | CN101127509A Timer reset circuit for overcurrent protection of switching power amplifier |
| 02/20/2008 | CN101127508A S class amplification circuit oriented to current |
| 02/20/2008 | CN101126767A Feedback circuit for radiation resistant transducer |
| 02/20/2008 | CN100370686C Tracking power supply control |
| 02/20/2008 | CN100370320C Output circuit, digital analog circuit and display device |
| 02/19/2008 | US7333567 Digital detector utilizable in providing closed-loop gain control in a transmitter |
| 02/19/2008 | US7333562 Nonlinear distortion compensating circuit |
| 02/19/2008 | US7333561 Postdistortion amplifier with predistorted postdistortion |
| 02/19/2008 | US7333559 Digital predistorter for a wideband power amplifier and adaptation method |
| 02/19/2008 | US7333557 Adaptive controller for linearization of transmitter with impairments |
| 02/19/2008 | US7332971 Multi-gigabit/s transimpedance amplifier for optical networks |
| 02/19/2008 | US7332969 Output offset protection for power amplifier |
| 02/19/2008 | US7332968 Amplifier circuit having an impedance-controllable bias-boosting circuit |
| 02/19/2008 | US7332967 Variable gain amplifier with low phase variation |
| 02/19/2008 | US7332963 Low noise amplifier |
| 02/19/2008 | US7332961 Predistortion linearizing |
| 02/14/2008 | WO2008019009A1 Stacked buffers |
| 02/14/2008 | WO2007052002A9 Monolithic lna support ic |
| 02/14/2008 | US20080036540 Amplifier arrangement and method for amplifying a signal |
| 02/14/2008 | US20080036532 Transmitter power amplifier working at different power supplies |
| 02/14/2008 | DE19802103B4 Verfahren und Schaltung zum Steuern der RF-Leistung eines Funksignals A method and circuit for controlling the RF power of a radio signal |
| 02/14/2008 | DE19713099B4 Verstärkerschaltung für einen Sender Amplifier circuit for a transmitter |
| 02/13/2008 | EP1887830A2 Protection circuit and load current detection circuit |
| 02/13/2008 | EP1887686A1 Multi-path Doherty amplifier and control method of a multi-path Doherty amplifier |
| 02/13/2008 | EP1887655A1 Slot type antenna with integrated amplifiers |
| 02/13/2008 | EP1887333A1 Microelectronic device equipped with a thermal protection circuit and thermal protection method for a microelectronic device |
| 02/13/2008 | EP1886404A2 Integrated doherty type amplifier arrangement with high power efficiency |
| 02/13/2008 | EP1797638B1 Polar loop circuit arrangement with distortion suppression and method for distortion suppression in a polar loop circuit arrangement |
| 02/13/2008 | EP1652020B1 A control circuit for diode based rf circuits |
| 02/13/2008 | EP1561291A4 Amplitude and phase matching for layered modulation reception |
| 02/13/2008 | EP1433253B1 Apparatus for impedance matching in an amplifier using lumped and distributed inductance |
| 02/13/2008 | CN101124724A Audio signal amplifying circuit and electronic device using the same |
| 02/13/2008 | CN101124723A Current limiting circuit for RF power amplifier |
| 02/13/2008 | CN101124713A Current controlled gate driver for power switches |
| 02/12/2008 | US7330704 Electrical signal pre-conditioning |
| 02/12/2008 | US7330668 Low noise light receiver |
| 02/12/2008 | US7330518 Distortion compensation circuit, and a transmission apparatus including the same |
| 02/12/2008 | US7330517 Amplifier linearization using non-linear predistortion |
| 02/12/2008 | US7330075 Output impedance control circuit and control method thereof |
| 02/12/2008 | US7330073 Arbitrary waveform predistortion table generation |
| 02/12/2008 | US7330072 Circuit for power amplification |
| 02/07/2008 | WO2008015970A1 Transmission circuit and communication apparatus |
| 02/07/2008 | US20080032656 Controllable Power Operational Transconductance Amplifier |
| 02/07/2008 | US20080030951 Electrical Apparatus and Cooling System |
| 02/07/2008 | US20080030911 Semiconductor integrated circuit device |
| 02/07/2008 | US20080030274 Gate Bias Generator |
| 02/07/2008 | US20080030269 Distortion compensator and wireless communication device |
| 02/07/2008 | US20080030266 Limiting amplifiers |
| 02/07/2008 | DE102007010429A1 Power amplifier arrangement, has regeneration unit with transformer adjusting output voltage set in several supply voltage stages and phases, which are selected such that voltage difference is minimal depending on voltage of amplifier |
| 02/07/2008 | DE102006034560A1 Verstärkerstufe, Operationsverstärker und Verfahren zur Signalverstärkung Amplifier stage operational amplifier and method for signal amplification |
| 02/06/2008 | EP1885058A1 Method of controlling amplifier gain and amplifier stage |
| 02/06/2008 | EP1885057A1 Frequency compensation of an amplifier including at least two gain stages |
| 02/06/2008 | EP1884024A2 Dual voltage regulator for a supply voltage controlled power amplifier in a closed power control loop |
| 02/06/2008 | EP1883877A1 Apparatus and method to compensate for effects of load capacitance on power regulator |
| 02/06/2008 | EP1632033A4 Digital baseband system and process for compensating for analog radio transmitter impairments |
| 02/06/2008 | CN201018459Y Power amplifier based on high voltage great current operation amplifier |
| 02/06/2008 | CN201018457Y Audio amplifier of reducing noise |
| 02/06/2008 | CN101119103A Device for correcting input offset voltage |
| 02/06/2008 | CN101119100A High gain wideband amplifier circuit with temperature compensation |
| 02/06/2008 | CN101119099A Load driving circuit and protection method |
| 02/06/2008 | CN101119098A Gain fluctuation regulation circuit and method |
| 02/06/2008 | CN100367668C Semiconductor integrated circuit device |
| 02/05/2008 | US7327192 Adaptive predistortion for a transmit system with gain, phase and delay adjustments |
| 02/05/2008 | US7327191 Distortion compensating apparatus and method |
| 02/05/2008 | US7327190 Differential amplifier arrangement |
| 02/05/2008 | US7327187 Method, circuit and power amplifier for detecting a fault, and method of protecting a circuit in a power amplifier from a fault occurrence |
| 01/31/2008 | WO2008013531A1 Amplification circuit and method therefor |
| 01/31/2008 | WO2008013481A1 A method for controlling a linear amplifier and power amplifier arrangement |
| 01/31/2008 | WO2008012898A1 Power amplifying apparatus |
| 01/31/2008 | WO2008012883A1 Wireless communication device |
| 01/31/2008 | WO2008012331A1 Integrator and error amplifier |
| 01/31/2008 | WO2007109776A3 Dynamic bias control in power amplifier |
| 01/31/2008 | US20080024229 Stacked rf power amplifier |
| 01/31/2008 | US20080024213 Amplifier circuits, methods of starting and stopping amplifier circuits |
| 01/31/2008 | US20080024212 Amplifier circuit |
| 01/31/2008 | US20080024211 Multi-Operational Amplifier System |
| 01/31/2008 | DE102004007635B4 Verstärker mit schaltbarer Gegenkopplung Amplifier with switchable feedback |
| 01/30/2008 | EP1883163A1 Tuneable filter control method and base station |
| 01/30/2008 | EP1882321A1 Method and system for determining the amplitude and/or phase of the output signal for a transmission body depending on the amplitude of the input signal |
| 01/30/2008 | EP1882251A1 Signal processing system for tonal noise robustness |
| 01/30/2008 | CN201015188Y Linear power amplifier device |
| 01/30/2008 | CN101114816A Inverting amplifier |
| 01/30/2008 | CN101114814A Method and apparatus to correct an error in a switching power amplifier |
| 01/30/2008 | CN101114813A Transistor series connection single end direct coupled class-a power amplification circuit |
| 01/30/2008 | CN101114811A Analog predistortion based linear power amplification circuit and method |
| 01/30/2008 | CN101114810A Amplifier stage, operational amplifier and method for amplifying a signal |
| 01/30/2008 | CN100366035C Method and apparatus for rotating a phase of a modulated signal |
| 01/29/2008 | US7324799 Multiband mixer |
| 01/29/2008 | US7324791 Low-noise differential bias circuit and differential signal processing apparatus |
| 01/29/2008 | US7323945 Programmable radio transceiver |
| 01/29/2008 | US7323937 Variable-gain amplifier |
| 01/29/2008 | US7323936 Input circuit for receiving an input signal, and a method for adjusting an operating point of an input circuit |
| 01/29/2008 | US7323931 System and method for operating a feedback network |
| 01/29/2008 | US7323930 Amplifiers with compensation |
| 01/29/2008 | US7323793 System and method for driving one or more loads |
| 01/24/2008 | US20080018399 Multistage amplifier apparatus with distortion compensation function |
| 01/24/2008 | US20080018398 Tunable Predistorter |
| 01/24/2008 | US20080018397 Single-ended screen-regulated cathode-follower output stage for high-fidelity music amplifier |