| 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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| 06/07/2006 | CN1783716A Pulse amplitude modulating method and circuit for improving D class audio amplifier property |
| 06/07/2006 | CN1783705A Circuit arrangement with short circuit protection circuit |
| 06/07/2006 | CN1783704A Amplifier system and method |
| 06/07/2006 | CN1783703A Low noise amplifier using cascode structure to realize single end input to differential pair output |
| 06/07/2006 | CN1782726A Offset compensation circuit for a monitoring photodiode |
| 06/07/2006 | CN1782720A Current-voltage conversion circuit |
| 06/07/2006 | CN1258874C Semiconductor device and power supply voltage controlling method |
| 06/07/2006 | CN1258870C Compensation circuit and method for power transistor |
| 06/07/2006 | CN1255944C Antenna amplifier |
| 06/06/2006 | US7058543 Evaluation apparatus and evaluation method |
| 06/06/2006 | US7058425 Communication apparatus and communication method |
| 06/06/2006 | US7058374 Low noise switching voltage regulator |
| 06/06/2006 | US7058373 Hybrid switched mode/linear power amplifier power supply for use in polar transmitter |
| 06/06/2006 | US7058370 Transmission power amplifier unit |
| 06/06/2006 | US7057464 Lineariser |
| 06/06/2006 | US7057463 Differential amplifier with improved frequency characteristic |
| 06/06/2006 | US7057462 Temperature compensated on-chip bias circuit for linear RF HBT power amplifiers |
| 06/06/2006 | US7057458 Balanced power amplifier and high-frequency communication apparatus |
| 06/06/2006 | US7057457 Low-noise amplifying circuit |
| 06/06/2006 | US7057455 System and method for reducing dynamic range and improving linearity in an amplication system |
| 06/06/2006 | US7057454 Resistor and switch-minimized variable analog gain circuit |
| 06/06/2006 | US7057452 Method and circuit for correcting the offset of an amplification chain |
| 06/06/2006 | US7057422 Comparator |
| 06/01/2006 | WO2006057478A1 Series type doherty amplifier without hybrid coupler |
| 06/01/2006 | WO2006057104A1 Semiconductor device and power amplifier |
| 06/01/2006 | WO2006057077A1 Semiconductor device and power amplifier |
| 06/01/2006 | WO2006056344A1 Method and system for determining the amplitude and/or phase of the output signal of a transmission link according to the amplitude of the input signal |
| 06/01/2006 | WO2006056321A1 Power amplifier for amplifying high-frequency (h.f.) signals |
| 06/01/2006 | US20060116089 Linearization of amplified feedback distortion |
| 06/01/2006 | US20060114633 Overcurrent detecting apparatus |
| 06/01/2006 | US20060114075 Transmitter and a method of calibrating power in signals output from a transmitter |
| 06/01/2006 | US20060114068 Phase-locked loop circuit |
| 06/01/2006 | US20060114065 High linearity digital variable gain amplifier |
| 06/01/2006 | US20060114064 Doherty amplifier and its distortion characteristic compensation method |
| 06/01/2006 | US20060114062 Self adaptable bias circuit for enabling dynamic control of quiescent current in a linear power amplifier |
| 06/01/2006 | US20060114060 Composite amplifier structure |
| 06/01/2006 | US20060114059 Power amplifier |
| 06/01/2006 | US20060114056 Offset cancellation in a switching amplifier |
| 06/01/2006 | US20060114016 Semiconductor device |
| 06/01/2006 | DE102004056435A1 Leistungsverstärker zum Verstärken von Hochfrequenz(HF)-Signalen Power amplifier for amplifying radio frequency (RF) signals |
| 06/01/2006 | DE102004052174A1 Verstärker mit tiefpassgefilterter Rückkopplung Amplifier with low-pass filtered feedback |
| 06/01/2006 | DE102004049420A1 Meßanordnung zur Memory-Analyse Measuring arrangement for Memory Analysis |
| 06/01/2006 | DE10054971B4 Pufferschaltung und Halteschaltung Buffer circuit and hold circuit |
| 06/01/2006 | CA2586439A1 Method and system for determining the amplitude and/or phase of the output signal of a transmission link according to the amplitude of the input signal |
| 05/31/2006 | EP1662655A1 Power amplifier with digital linearisation device |
| 05/31/2006 | EP1662654A1 Amplifying circuit with negative transconductance gain |
| 05/31/2006 | EP1661242A1 Transistor arrangement, integrated circuit and method for operating field effect transistors |
| 05/31/2006 | EP1196838B1 Programmable logic controller method, system and apparatus |
| 05/31/2006 | EP1161800B1 A portable radio transceiver |
| 05/31/2006 | EP1101278B1 A method of attenuating zero crossing distortion and noise in an amplifier, an amplifier and uses of the method and the amplifier |
| 05/31/2006 | CN2785256Y Current module high fidelity power amplifier |
| 05/31/2006 | CN1781244A N-way RF power amplifier circuit with increased back-off capability and power added efficiency using selected phase lengths and output impedances |
| 05/31/2006 | CN1780762A N-way RF power amplifier circuit with increased back-off capability and power added efficiency using unequal input power division |
| 05/31/2006 | CN1258311C Portable power amplifier |
| 05/30/2006 | US7054597 Power control for a transmitter |
| 05/30/2006 | US7054384 Power amplifier sharing in a wireless communication system with transmit diversity |
| 05/30/2006 | US7054123 Circuit configuration for identifying a fault state |
| 05/30/2006 | US7053718 Stacked RF power amplifier |
| 05/30/2006 | US7053717 Method and apparatus for realizing a low noise amplifier |
| 05/30/2006 | US7053716 Controlled impedance bias circuit |
| 05/30/2006 | US7053710 Vacuum tube amplifier having grid as output and plate as input |
| 05/30/2006 | US7053709 Linearization of an amplifier |
| 05/30/2006 | US7053708 Electronic component for high frequency power amplifier and radio communication system |
| 05/30/2006 | US7053706 High linearity doherty communication amplifier with bias control |
| 05/30/2006 | US7053705 Mixed-mode (current-voltage) audio amplifier |
| 05/30/2006 | US7053704 Audio amplifier circuit with suppression of unwanted noise when starting from an off or standby state |
| 05/30/2006 | US7053702 Feed forward amplifier |
| 05/30/2006 | US7053701 Power amplifier output stage with multiple power states and improved efficiency |
| 05/30/2006 | US7053700 High-efficiency amplifier and method |
| 05/30/2006 | US7053699 Current output stages |
| 05/26/2006 | WO2006055492A1 Re-configurable amplifier protection apparatus and method |
| 05/25/2006 | US20060109930 Method and device for deriving a predistorted signal |
| 05/25/2006 | US20060109055 Low noise op amp |
| 05/25/2006 | US20060109052 Adaptive predistortion for a transmit system |
| 05/25/2006 | US20060109051 Gain adjustment method, gain adjustment circuit, and optical disc device having same gain adjustment circuit |
| 05/24/2006 | EP1658674A2 Power distribution and biasing in rf switch-mode power amplifiers |
| 05/24/2006 | EP1658673A2 Low noise, electric field sensor |
| 05/24/2006 | EP1658672A1 Integrated power amplifier circuit |
| 05/24/2006 | EP1658671A1 Method and apparatus for dynamically regulating the supply voltage of a power amplifier |
| 05/24/2006 | EP1082810B1 A gain control circuit and method for providing gain control of a variable amplifier using a pilot signal |
| 05/24/2006 | DE102004054586A1 Amplifier for amplitude and phase modulating signals for mobile communication uses a polar loop transmitter |
| 05/24/2006 | CN2783334Y Over current detector |
| 05/24/2006 | CN1778036A Systems and methods for protection of audio amplifier circuits |
| 05/24/2006 | CN1777022A Digital audio amplifier, an audio system including the same, and a method of amplifying an audio signal |
| 05/23/2006 | US7050949 Signal processing method and device |
| 05/23/2006 | US7050947 Remote control communication including secure synchronization |
| 05/23/2006 | US7050769 Electronic apparatus and design method |
| 05/23/2006 | US7050724 Optical receiver |
| 05/23/2006 | US7050024 Predictive control boost current method and apparatus |
| 05/23/2006 | US7049907 System and method for adjusting group delay |
| 05/23/2006 | US7049893 Apparatus, methods and articles of manufacture for power amplifier control in a communication system |
| 05/23/2006 | US7049892 High frequency power amplifier circuit device |
| 05/23/2006 | US7049891 Amplifier bias enhancement technique |
| 05/23/2006 | US7049889 Differential stage voltage offset trim circuitry |
| 05/23/2006 | US7049886 High efficiency power amplifier with multiple power modes |
| 05/23/2006 | US7049855 Area efficient waveform evaluation and DC offset cancellation circuits |
| 05/18/2006 | WO2006053098A1 Method and apparatus for calibrating analog circuits using statistical techniques |
| 05/18/2006 | WO2006053034A2 Method and apparatus for opening a feedback loop |
| 05/18/2006 | WO2006050797A1 Electronic circuit arrangement with active control on receiving an electrical received signal |
| 05/18/2006 | US20060105725 Method and system for a control scheme on power and common-mode voltage reduction for a transmitter |