| 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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| 01/05/2006 | WO2006000083A1 Improved power amplifier (pa) efficiency with low current dc to dc converter |
| 01/05/2006 | WO2005065394A3 Greedy adaptive signature discrimination system and method |
| 01/05/2006 | US20060003714 Method and apparatus for impedance matching in an amplifier using lumped and distributed inductance |
| 01/05/2006 | US20060001504 High bandwidth high gain receiver equalizer |
| 01/05/2006 | US20060001488 Digital audio amplifier including phase lead-lag compensator for increasing self-oscillation frequency |
| 01/05/2006 | US20060001487 Even order distortion elimination in push-pull or differential amplifiers and circuits |
| 01/05/2006 | US20060001486 Bias circuit for high frequency amplifiers |
| 01/05/2006 | US20060001484 Parallel power amplifier and associated methods |
| 01/05/2006 | US20060001483 Power supply processing for power amplifiers |
| 01/05/2006 | DE10239051B4 Halbleiteranordnung Semiconductor device |
| 01/05/2006 | DE102005027628A1 Wiedergabetreuer Schaltverstärker Reproduction spreader amplifier |
| 01/04/2006 | EP1612933A1 Distortion compensation device |
| 01/04/2006 | EP1612932A1 Multiple power mode amplifier with bias modulation option and without bypass switches |
| 01/04/2006 | EP1611724A1 Method and apparatus for performing linearization in a quadrature transmitter |
| 01/04/2006 | EP1611677A1 Neutralization of feedback capacitance in amplifiers |
| 01/04/2006 | EP1611676A1 Power amplifier pre-distortion |
| 01/04/2006 | EP1611675A1 Power amplifier and a rf transmitter and terminal including the amplifier |
| 01/04/2006 | EP1326328B1 High-frequency amplifier |
| 01/04/2006 | EP1260015B1 Variable transconductance variable gain amplifier utilizing a degenerated differential pair |
| 01/04/2006 | EP0901715B1 Amplifier arrangement |
| 01/04/2006 | CN1717863A Method and device for correcting signal distortions in an amplifier device |
| 01/04/2006 | CN1716763A Semiconductor integrated circuit and operational amplifier circuit |
| 01/04/2006 | CN1235423C Method for amplitude-limited wide-band radio signal and relative transmitter |
| 01/04/2006 | CN1235334C Bias circuit of radio frequency power amplifier |
| 01/04/2006 | CN1235333C Feedforward amplifer and feedward magnifying method |
| 01/03/2006 | US6983052 Vehicle power amplifier and voltage supply thereof |
| 01/03/2006 | US6983026 Method and apparatus using base band transformation to improve transmitter performance |
| 01/03/2006 | US6982609 System method and apparatus for a three-line balun with power amplifier bias |
| 01/03/2006 | US6982603 Radio-frequency power amplification circuit having stabilization circuit |
| 01/03/2006 | US6982598 Differential amplifier |
| 01/03/2006 | US6982595 Method and arrangement relating to electronic compensation |
| 01/03/2006 | US6982593 Switching amplifier architecture |
| 01/03/2006 | US6982590 Bias current generating circuit, laser diode driving circuit, and optical communication transmitter |
| 12/29/2005 | WO2005124998A1 Current-mode instrumentation amplifier gain error correction circuitry |
| 12/29/2005 | WO2005124997A1 Current-mode instrumentation amplifier |
| 12/29/2005 | WO2005124996A2 Dvd reading apparatus |
| 12/29/2005 | WO2005124995A1 Method and circuit for pre-distorting an input signal for supply to an amplifier |
| 12/29/2005 | WO2005124994A1 High-efficiency amplifier |
| 12/29/2005 | WO2005124499A1 Precision chopper-stabilized current mirror |
| 12/29/2005 | WO2005039062A3 Amplifier with capacitor selection |
| 12/29/2005 | US20050288905 System and method for measuring audio processing attributes in a computer system |
| 12/29/2005 | US20050287976 Integrated rf front end |
| 12/29/2005 | US20050287967 Low noise high isolation transmit buffer gain control mechanism |
| 12/29/2005 | US20050286652 Transmit signal generator and method |
| 12/29/2005 | US20050286394 Means for limiting an output signal of an amplifier stage |
| 12/29/2005 | US20050285684 Stacked transistor method and apparatus |
| 12/29/2005 | US20050285682 Amplifying circuit with variable supply voltage |
| 12/29/2005 | US20050285681 Power amplifier (pa) efficiency with low current dc to dc converter |
| 12/29/2005 | US20050285671 Amplifier circuit with reduced power-off transients and method thereof |
| 12/29/2005 | US20050285670 Audio amplifier |
| 12/29/2005 | US20050285658 Level shifter with reduced duty cycle variation |
| 12/29/2005 | US20050285017 Color sensing circuit employing charge storage device |
| 12/29/2005 | US20050284609 Heatsink for power devices |
| 12/29/2005 | DE10393719T5 Adaptive Bias-Steuerschaltung für Hochfrequenzleistungsverstärker Adaptive bias control circuit for high-frequency power amplifier |
| 12/29/2005 | DE102005026029A1 Vorrichtung zur Verstärkung elektrischer Energie An amplifying electrical energy |
| 12/28/2005 | EP1609241A2 Systems and methods for implementing a sample rate converter using hardware and software to maximize speed and flexibility |
| 12/28/2005 | EP1609240A1 Circuit arrangement and transistor control method |
| 12/28/2005 | EP1609239A2 High efficiency amplifier and method of designing same |
| 12/28/2005 | EP1609238A2 Enhanced efficiency feed forward power amplifier utilizing reduced cancellation bandwidth and small error amplifier |
| 12/28/2005 | EP1262017A4 Spectral distortion monitor for controlling pre-distortion and feed-forward linearization of rf power amplifier |
| 12/28/2005 | EP1245077A4 Carrier-blanking mechanism for sweeping detector used to measure and correct rf power amplifier distortion |
| 12/28/2005 | CN1714505A Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics |
| 12/28/2005 | CN1714504A Travelling-wave amplifier |
| 12/28/2005 | CN1714502A Pulse width-modulated noise shaper |
| 12/28/2005 | CN1714501A Pulse modulated power converter |
| 12/28/2005 | CN1714500A 复合放大器结构 Composite amplifier structure |
| 12/28/2005 | CN1713518A Electric component for high frequency power amplifier |
| 12/28/2005 | CN1713517A Color sensing circuit employing charge storage device |
| 12/28/2005 | CN1713516A Low voltage differential amplifier circuit for wide voltage operation range and its operation method |
| 12/27/2005 | US6980932 Digital measurements of spread spectrum clocking |
| 12/27/2005 | US6980604 Transmission device and transmission method |
| 12/27/2005 | US6980116 Method for failure detection in a radio frequency device |
| 12/27/2005 | US6980058 Amplifier circuitry |
| 12/27/2005 | US6980052 Low-voltage pre-distortion circuit for linear-in-dB variable-gain cells |
| 12/22/2005 | WO2005122392A1 High impedance circuit |
| 12/22/2005 | WO2005121820A1 Method and apparatus to reduce jitter by adjusting vertical offset |
| 12/22/2005 | WO2005011106A3 A low-power wide dynamic range envelope detector system and method |
| 12/22/2005 | US20050283343 Methods and arrangements for capturing runtime information |
| 12/22/2005 | US20050281103 Semiconductor integrated circuit and operational amplifier |
| 12/22/2005 | US20050280472 Method and apparatus to provide wideband low noise amplification |
| 12/22/2005 | US20050280471 Electric component for high frequency power amplifier |
| 12/22/2005 | US20050280468 Accurate quiescent current control scheme in floating controlled class AB amplifier |
| 12/22/2005 | US20050280467 Monolithic CMOS differential LNA with enhanced linearity |
| 12/22/2005 | US20050280466 Method and apparatus for an enhanced efficiency power amplifier |
| 12/22/2005 | US20050280464 Constant voltage outputting circuit |
| 12/22/2005 | DE19962811B4 Gegentaktverstärkerschaltung Push-pull amplifier circuit |
| 12/22/2005 | DE10393755T5 Schaltung zur aktiven Self-Bias-Kompensation für einen Hochfrequenzleistungsverstärker A circuit for active self-bias compensation for a high frequency power amplifier |
| 12/22/2005 | DE10312435B4 Mit einer Antenne gekoppelte Verstärkungseinrichtung zum Senden und Empfangen Amplifying means coupled to an antenna for transmitting and receiving |
| 12/22/2005 | DE102004025918A1 Verstärkeranordnung und Verfahren zum Betreiben einer Verstärkeranordung Amplifier arrangement and method for operating a Verstärkeranordung |
| 12/21/2005 | EP1606884A2 Clip detection in pwm amplifier |
| 12/21/2005 | EP1606875A1 Systems and methods for protection of audio amplifier circuits |
| 12/21/2005 | EP1312159B1 Radio frequency feedback amplifier circuits |
| 12/21/2005 | EP1273106B1 Method and transmission circuit for producing a transmission signal |
| 12/21/2005 | CN1711679A Improved RF transistor amplifier linearity using suppressed third order transconductance |
| 12/21/2005 | CN1711678A Power amplifier |
| 12/21/2005 | CN1711677A Apparatus, methods and articles of regulating linear signal |
| 12/21/2005 | CN1233090C Programmable radio frequency front compensation linear circuit and method thereof |
| 12/21/2005 | CN1233089C Pre-stabilized power supply circuit equipment for final-stage power amplifier |
| 12/21/2005 | CN1233088C System and method for generating amplified signal or version thereof |
| 12/20/2005 | US6977968 Transmitting-receiving device comprising a closed cartesian feedback loop |