| 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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| 04/11/2006 | US7026866 DC offset self-calibration system for a switching amplifier |
| 04/06/2006 | WO2006036900A1 High-speed and high-accuracy digital-to-analog converter |
| 04/06/2006 | WO2006036402A1 Sliding cascode circuit |
| 04/06/2006 | WO2006036060A1 Gate bias generator |
| 04/06/2006 | WO2005094536A3 Digital linearizing system |
| 04/06/2006 | US20060072657 Pulse width-modulated noise shaper |
| 04/06/2006 | US20060071711 Arbitrary waveform predistortion table generation |
| 04/06/2006 | US20060071710 Auto gain controller |
| 04/06/2006 | US20060071709 Switched-capacitor circuits with reduced finite-gain effect |
| 04/06/2006 | US20060071296 RF passive circuit and RF amplifier with via-holes |
| 04/06/2006 | DE19720019B4 Linearer Leistungsverstärker sowie Verfahren zur linearen Leistungsverstärkung Linear power amplifier and method for linear power amplification |
| 04/06/2006 | DE102004045709A1 Verfahren zur Einstelllung eines Verstärkers und entsprechende Verstärkerschaltung Method for Einstelllung an amplifier and corresponding amplifier circuit |
| 04/06/2006 | DE102004038089A1 Reglergestütztes Verfahren und reglergestützte Vorrichtung zur Bestimmung der Kennlinie eines Kompensationsgliedes in einem Pegelkreis Controller-implemented method and apparatus for determining the controller based characteristic of a compensation element in a level circular |
| 04/05/2006 | EP1643636A1 A method for assessing a capability of an amplifier |
| 04/05/2006 | EP1642384A2 Integrated power amplifier circuit |
| 04/05/2006 | EP1547241B1 Dc-compensation loop for variable gain amplifier |
| 04/05/2006 | EP1127408B1 Variable gain amplifier with improved linearity |
| 04/05/2006 | CN2770223Y Offset correct circuit and electronic sound volume apparatus |
| 04/05/2006 | CN1757156A Amplification device |
| 04/05/2006 | CN1756099A Mobile communication terminal with adjustable driving voltage of power amplifier and control method thereof |
| 04/05/2006 | CN1249938C Electric field intensity detecting circuit and limiter amplifier |
| 04/05/2006 | CN1249932C Communication device and communication method |
| 04/05/2006 | CN1249913C Predistortion type distortion compensatino amplifier |
| 04/05/2006 | CN1249912C High-efficiency modulating RF amplifier |
| 04/05/2006 | CN1249813C Single supply HFET device and method for temp. compensation |
| 04/04/2006 | US7024608 Transmitting method and transmitting apparatus |
| 04/04/2006 | US7024231 Booster system in a cellular phone base station |
| 04/04/2006 | US7024056 Electro-optic gating arrangement with improved duty cycle |
| 04/04/2006 | US7023279 Linear pre-amplifier for radio-frequency power amplifier |
| 04/04/2006 | US7023273 Architecture and implementation methods of digital predistortion circuitry |
| 04/04/2006 | US7023272 Multi-band low noise amplifier system |
| 04/04/2006 | US7023271 Variable-gain constant-bandwidth transimpedance amplifier |
| 04/04/2006 | US7023270 High efficiency power amplifier |
| 04/04/2006 | US7023266 Device and method for nullifying offset voltages in operational amplifiers |
| 03/30/2006 | WO2006034311A2 Low voltage track and hold circuits |
| 03/30/2006 | WO2006033269A1 Signal amplifying circuit and acceleration sensor having the same |
| 03/30/2006 | WO2006033256A1 Distortion compensating amplifier apparatus |
| 03/30/2006 | WO2006033052A1 Peak voltage protection circuit and method |
| 03/30/2006 | WO2006033026A1 A transmitter and a method of operating a transmitter |
| 03/30/2006 | WO2006032616A1 Power amplifier unit, mobile telecommunications terminal and associated operating method |
| 03/30/2006 | WO2005124996A3 Dvd reading apparatus |
| 03/30/2006 | WO2005119907A3 General-purpose wideband amplifier |
| 03/30/2006 | US20060068726 Transmitter and radio communication terminal using the same |
| 03/30/2006 | US20060068697 Transmitter |
| 03/30/2006 | US20060066403 Power amplifier and method for power amplification |
| 03/30/2006 | US20060066396 Circuit for power amplification |
| 03/30/2006 | US20060066394 Characterizing linearity of amplifiers |
| 03/30/2006 | US20060066363 Driver circuit with gradual voltage ramp up and ramp down |
| 03/30/2006 | US20060066360 Switched operation amplifier |
| 03/30/2006 | DE4228833B4 Signalverarbeitungsschaltung Signal processing circuit |
| 03/30/2006 | DE102005006806A1 Verfahren und Vorrichtung zum Messen von physikalischer Grössen mit piezoelektrischen Sensoren Method and apparatus for measuring physical quantities with piezoelectric sensors |
| 03/30/2006 | CA2663936A1 A linear transconductance cell with wide tuning range |
| 03/29/2006 | EP1641117A2 Power amplifier for a transmitter |
| 03/29/2006 | EP1639702A1 Self-oscillating power circuit |
| 03/29/2006 | EP1639700A1 Cartesian loop transmitter and method of adjusting an output level of such transmitter |
| 03/29/2006 | EP1639699A1 Output power detection circuit |
| 03/29/2006 | EP1639698A1 Apparatus, amplifier, system and method for receiver equalization |
| 03/29/2006 | EP1638457A1 Amplifier system for determining parameters of a patient |
| 03/29/2006 | CN1754312A A method and a device for adjusting power amplifier properties |
| 03/29/2006 | CN1754310A Data transmission method, base station and transmitter |
| 03/29/2006 | CN1754309A Apparatus, methods and articles of manufacture for control in an electromagnetic processor |
| 03/29/2006 | CN1753301A High-frequency power amplifier module |
| 03/29/2006 | CN1753300A Method of preventing power amplifier from leakage after power drop and power amplifier |
| 03/29/2006 | CN1248522C Transmitter |
| 03/28/2006 | US7020447 Method and apparatus for compensating for distortion in radio apparatus |
| 03/28/2006 | US7020293 Noise reduction method |
| 03/28/2006 | US7020216 Method for adjusting a phase angle of a phase modifier of a transmitting device |
| 03/28/2006 | US7019720 Adaptive control boost current method and apparatus |
| 03/28/2006 | US7019719 Method and clamping apparatus for securing a minimum reference voltage in a video display boost regulator |
| 03/28/2006 | US7019593 Variable-gain cascode amplifier using voltage-controlled and variable inductive load |
| 03/28/2006 | US7019591 Gain boosted operational amplifier having a field effect transistor with a well biasing scheme |
| 03/28/2006 | US7019589 Transimpedance amplifier |
| 03/28/2006 | US7019588 Method to dynamically control the quiescent current of an operational amplifier arrangement and operational amplifier arrangement performing this method |
| 03/28/2006 | US7019578 Input circuit |
| 03/28/2006 | US7019552 Line driver with active termination |
| 03/23/2006 | WO2006031784A1 Reconfigurable radiation desensitivity bracket systems and methods |
| 03/23/2006 | WO2006031156A1 An arrangement and a method relating to signal predistortion |
| 03/23/2006 | WO2006030666A1 Buffer amplifier, driver ic, and display apparatus using that driver ic |
| 03/23/2006 | WO2006029750A1 Tunable low noise amplifier |
| 03/23/2006 | US20060061420 Bias current cancellation for differential amplifiers |
| 03/23/2006 | US20060061418 Predistortion circuit, low-distortion power amplifier, and control methods therefor |
| 03/23/2006 | US20060061417 High-frequency power amplifier module |
| 03/23/2006 | DE10201890B4 Schaltung und Verfahren zur Kompensation eines Hochfrequenzsignalverlustes auf einer Übertragungsleitung Circuit and method for compensating a high-frequency signal loss on a transmission line |
| 03/22/2006 | EP1638204A1 Power amplifier and transmitter |
| 03/22/2006 | EP1636902A1 Power control for a transmitter |
| 03/22/2006 | CN2766455Y Class-B power amplifier |
| 03/22/2006 | CN1751434A Enhanced efficiency feed forward power amplifier utilizing reduced cancellation bandwidth and small error amplifier |
| 03/22/2006 | CN1751433A Low voltage class AB transconductor circuits |
| 03/22/2006 | CN1751432A Distortion compensation device |
| 03/22/2006 | CN1751431A Transmission amplifier |
| 03/22/2006 | CN1750398A Gate driver with programmable dead-time insertion |
| 03/22/2006 | CN1750386A High-fidelity power amplifier of current mode |
| 03/22/2006 | CN1750385A High power TDD radio frequency power amplifier |
| 03/22/2006 | CN1247037C Predistortion amplifying apparatus |
| 03/22/2006 | CN1246958C Pre-distortion linear circuit |
| 03/21/2006 | US7016431 Transmitter for transmitting signals over radio channels and method for transmitting signals over radio channels |
| 03/21/2006 | US7016387 Windows, electrode masking segments; measurement adjustment pattern segments |
| 03/21/2006 | US7015761 Power amplifier module |
| 03/21/2006 | US7015757 Transconductance amplifier with multi-emitter structure for current balance in a multi-phase regulator |
| 03/21/2006 | US7015753 Digital signal processing based implementation of a feed forward amplifier |