| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 02/28/2007 | CN1302622C Bi-polar PNP chopper |
| 02/28/2007 | CN1302621C Active continuous-time filter with increased dynamic range in the presence of blocker signals |
| 02/28/2007 | CN1302619C Amplifier for alternating signal overlapped on continuous signals and its amplifying method |
| 02/28/2007 | CN1302618C Differential amplifying circuit and semiconductor integrated circuit for driving liquid crystal display device |
| 02/28/2007 | CN1302617C Method and apparatus for matching common mode output voltage at a switched-capacitor to continuous-time interface |
| 02/28/2007 | CN1302616C Communication system and arrangements comprising such a communication system |
| 02/28/2007 | CN1302615C Multistage amplifier |
| 02/27/2007 | US7184728 Distributed automatic gain control system |
| 02/27/2007 | US7184491 Wireless communication apparatus |
| 02/27/2007 | US7184481 Audio reproducing apparatus and method |
| 02/27/2007 | US7183859 Power supply rejection for high bandwidth transimpedance amplifier circuits (TIAs) |
| 02/27/2007 | US7183858 Wireless transmitter having multiple programmable gain amplifiers (PGAs) with tuned impedance to provide substantially linear magnitude and phase responses |
| 02/27/2007 | US7183857 Single supply direct drive amplifier |
| 02/27/2007 | US7183856 Power source circuit for high frequency power amplifying circuit and semiconductor integrated circuit for power source and electronics component for power source |
| 02/27/2007 | US7183855 Circuit arrangement for the switchable amplification of variable electrical signals |
| 02/27/2007 | US7183853 Feedback amplifier having amplified signal path and feedback signal path separated |
| 02/27/2007 | US7183852 Differential amplifying method and apparatus operable with a wide range input voltage |
| 02/27/2007 | US7183851 Differential dual port current conveyor circuit |
| 02/27/2007 | US7183850 Switchable operational amplifier circuit |
| 02/27/2007 | US7183849 Variable gain amplifier having linear-in-decibel transconductance |
| 02/27/2007 | US7183848 Transconductance amplifier |
| 02/27/2007 | US7183847 Multi-band look-up table type predistorter |
| 02/27/2007 | US7183845 Gain control methods and systems in an amplifier assembly |
| 02/27/2007 | US7183843 Electronically tuned power amplifier |
| 02/27/2007 | US7183841 Power amplifier arrangement, and a method for amplification of a signal |
| 02/27/2007 | US7183840 Class-D amplifier |
| 02/27/2007 | US7183836 Fuse sense circuit |
| 02/27/2007 | US7183823 Method of generating a pulsed output signal from a periodic ramp signal and a reference voltage, and a switch mode power converter |
| 02/27/2007 | US7183804 Process and device for outputting a digital signal |
| 02/27/2007 | US7183555 Charge or particle sensing |
| 02/27/2007 | US7183531 Amplification with feedback capacitance for photodetector signals |
| 02/22/2007 | WO2007020404A1 Feedback controller for pwm amplifier |
| 02/22/2007 | WO2006088604B1 Method and apparatus for an improved power amplifier |
| 02/22/2007 | WO2005060489A3 Linearized trans-impedance amplifier |
| 02/22/2007 | US20070040613 Isolated stable bias circuit |
| 02/22/2007 | US20070040612 Push-pull amplifier with transformational negative feedback |
| 02/22/2007 | US20070040611 Protection circuit of digital amplifier |
| 02/22/2007 | US20070040608 Feedback controller for PWM amplifier |
| 02/22/2007 | DE112005000255T5 Verstärkerschaltung eines integrierenden Elektrometers Amplifier circuit of an integrating electrometer |
| 02/22/2007 | DE10241350B4 Verstärkerschaltung Amplifier circuit |
| 02/21/2007 | EP1755214A1 RF power amplifier for wireless communication apparatus |
| 02/21/2007 | EP1754306A1 Coupling net and mmic amplifier |
| 02/21/2007 | CN1918798A 发送功率控制装置 Transmission power control means |
| 02/21/2007 | CN1918797A Control of a power amplifier for reducing power consumption in a transceiver |
| 02/21/2007 | CN1918794A Differential driving circuit and electronic equipment including the same |
| 02/21/2007 | CN1918790A Radio frequency low noise amplifier with automatic gain control |
| 02/21/2007 | CN1918789A Balanced output circuit and electronic device using the same |
| 02/21/2007 | CN1918788A Power supply rejection for pulse width modulated amplifiers and automatic gain control |
| 02/21/2007 | CN1918787A Load-invariant amplifier |
| 02/21/2007 | CN1918786A Cascode cmos RF power amplifier with isolated trnasistors |
| 02/20/2007 | US7180758 Class E amplifier with inductive clamp |
| 02/20/2007 | US7180374 Photodiode integrated circuit having multiple gain states |
| 02/20/2007 | US7180373 High frequency power amplifier module and semiconductor integrated circuit device |
| 02/20/2007 | US7180372 High frequency amplifier |
| 02/20/2007 | US7180371 Input amplifier with improved power supply rejection |
| 02/20/2007 | US7180370 CMOS amplifiers with frequency compensating capacitors |
| 02/20/2007 | US7180369 Baseband filter start-up circuit |
| 02/20/2007 | US7180365 Class D amplifier and a method of pulse width modulation |
| 02/20/2007 | US7180358 CMOS exponential function generating circuit with temperature compensation technique |
| 02/20/2007 | US7180356 Semiconductor circuit |
| 02/20/2007 | US7180354 Receiver having full signal path differential offset cancellation capabilities |
| 02/20/2007 | US7180310 Amplitude varying driver circuit and test apparatus |
| 02/15/2007 | WO2007019509A2 Feedback network for high gain amplification with enhanced bandwidth and gain control |
| 02/15/2007 | WO2007018884A1 Amplification of ttl rf oscillator signals with digital logic and power switching technology for co2 laser rf power supplies |
| 02/15/2007 | WO2006123289A3 Integrated doherty type amplifier arrangement with high power efficiency |
| 02/15/2007 | US20070037544 Integrated RF circuits |
| 02/15/2007 | US20070037532 Radio frequency excitation arrangement including a limiting circuit |
| 02/15/2007 | US20070036375 Output stage for a hearing aid and method of driving output stage |
| 02/15/2007 | US20070035342 Differential amplifier offset voltage minimization independently from common mode voltage adjustment |
| 02/15/2007 | US20070035341 Amplifier circuit having a compensating amplifier unit for improving loop gain and linearity |
| 02/15/2007 | US20070034946 Semiconductor device |
| 02/15/2007 | DE102005038442A1 Gegentaktverstärker mit transformatorischer Gegenkopplung Push-pull amplifier with transformer feedback |
| 02/14/2007 | EP1753139A1 Digital-to-analog converter with programmable current control |
| 02/14/2007 | EP1753129A1 Receiver with high input range |
| 02/14/2007 | EP1753128A2 Amplifying circuit having bias voltage setting unit |
| 02/14/2007 | EP1751943A1 A transmitter and a method of operating a transmitter |
| 02/14/2007 | EP1751856A2 Multi-channel pulse modulator system |
| 02/14/2007 | EP1751855A1 Pulse width modulator system |
| 02/14/2007 | EP1751854A1 Audio amplifier and speaker incorporating audio amplifier |
| 02/14/2007 | EP1751853A1 A tuneable circuit for canceling third order modulation |
| 02/14/2007 | EP1751850A1 Plop noise avoidance for an amplifier |
| 02/14/2007 | EP1623500B1 Digital switching power amplifier for a collimated and directed energy beam |
| 02/14/2007 | CN1914951A Output stage for a hearing aid and method of driving output stage |
| 02/14/2007 | CN1914810A Transmitter and wireless communication apparatus |
| 02/14/2007 | CN1914795A 可变增益电路 Variable gain circuit |
| 02/14/2007 | CN1914794A Gate control circuit with soft start/stop function |
| 02/14/2007 | CN1914787A Switching power supply and semiconductor integrated circuit |
| 02/14/2007 | CN1914576A Bootstrap capacitor refresh circuit |
| 02/14/2007 | CN1913362A Fold line type signal buffer circuit |
| 02/14/2007 | CN1913345A Push-pull amplifier with transformational negative feedback |
| 02/14/2007 | CN1913343A RF fundamental neutralizing circuit of adapting to power |
| 02/14/2007 | CN1300938C Quasi push-pull source pole fllower |
| 02/14/2007 | CN1300937C Circuit for low noise, fully differential amplification |
| 02/14/2007 | CN1300936C Base frequency shifting feedback controller |
| 02/14/2007 | CN1299640C Bioelectrical detection circuit |
| 02/13/2007 | US7177612 Frequency generator and communication system using the same |
| 02/13/2007 | US7177607 Controlling transmission mode on basis of power in preceding time slot |
| 02/13/2007 | US7177605 Power amplification device, in particular for a cellular mobile telephone |
| 02/13/2007 | US7176762 Radio frequency power amplifier |
| 02/13/2007 | US7176761 Apparatus and method for receiving inputted signal |