| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 01/10/2007 | EP1741203A2 Method and apparatus for dynamically adjusting a transmitter's impedance and implementing a hybrid power amplifier therein which selectively connects linear and switch-mode power amplifiers in series |
| 01/10/2007 | EP1741181A2 Travelling wave amplifier |
| 01/10/2007 | EP1741180A1 High speed differential receiver with rail to rail common mode operation having a symmetrical differential output signal with low skew |
| 01/10/2007 | EP1559199B1 RF circuit with frequency agile seqential amplifiers |
| 01/10/2007 | EP1415392B1 Open loop variable gain amplifier using replica gain cell |
| 01/10/2007 | CN1894855A System and method for detection of amplitude limit and modification of signal |
| 01/10/2007 | CN1893270A Bias-voltage circuit for use on sound source amplifier |
| 01/10/2007 | CN1893262A 可变跨导电路 The variable transconductance circuit |
| 01/10/2007 | CN1893261A Low noise amplifier for wideband and method for amplifying RF signal using the amplifier |
| 01/10/2007 | CN1893258A Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control |
| 01/10/2007 | CN1294698C Distributed circular geometry power amplifier architecture |
| 01/10/2007 | CN1294697C Configurable power amplifier and bias control |
| 01/10/2007 | CN1294673C Tuning multiplexer |
| 01/09/2007 | US7161817 Current/charge-voltage converter and reset method |
| 01/09/2007 | US7161510 Switching amplifier comprising a delta-sigma modulation circuit |
| 01/09/2007 | US7161434 Amplifier |
| 01/09/2007 | US7161433 High-frequency amplifier |
| 01/09/2007 | US7161432 Current mirror with low headroom requirement |
| 01/09/2007 | US7161431 Class B amplifier with process variation independent deadband |
| 01/09/2007 | US7161430 Low voltage folded metal oxide semiconductor field effect transistor (MOSFET) amplifier circuit |
| 01/09/2007 | US7161429 Multi-port cross-connected multi-level cascode differential amplifier |
| 01/09/2007 | US7161428 Method and apparatus for extending the bandwidth of a Class D amplifier circuit |
| 01/09/2007 | US7161427 Input structure for a power amplifier and associated methods |
| 01/09/2007 | US7161425 Radio frequency power amplifier for lossless power combining |
| 01/09/2007 | US7161424 Signal output apparatus |
| 01/09/2007 | US7161421 Volume control in class D amplifier using variable supply voltage |
| 01/09/2007 | US7161419 Sensor device and a signal amplification device of a small detection signal provided by the sensor |
| 01/09/2007 | US7161413 Precision chopper-stabilized current mirror |
| 01/09/2007 | US7161336 Power supply device and electronic equipment comprising same |
| 01/09/2007 | CA2335220C Fet bias circuit |
| 01/04/2007 | WO2007002770A2 Methods and apparatus for implementing and using amplifiers for performing various amplification related operations |
| 01/04/2007 | WO2007002486A2 Amplifier and amplification method |
| 01/04/2007 | WO2007001907A1 Wide dynamic range switching variable gain amplifier and control |
| 01/04/2007 | WO2007000423A1 Electronic network circuit with disymmetrical differential pairs |
| 01/04/2007 | US20070002912 Laser power control circuit |
| 01/04/2007 | US20070001769 Ultra-wideband constant gain cmos amplifier |
| 01/04/2007 | US20070001768 Broadband low noise amplifier and RF signal amplification method of the same |
| 01/04/2007 | US20070001765 Monolithic transformer based amplifier for integrated circuits |
| 01/04/2007 | US20070001764 Signal dependent biasing scheme for an amplifier |
| 01/04/2007 | US20070001763 Apparatus and method for canceling DC output offset |
| 01/04/2007 | US20070001762 DC-DC converter switching transistor current measurement technique |
| 01/04/2007 | US20070001761 Differential amplifier and operational amplifier |
| 01/04/2007 | US20070001760 Buffer amplifier |
| 01/04/2007 | US20070001758 Multiple differential amplifier system and method for transconductance mismatch compensation |
| 01/04/2007 | US20070001757 Switched capacitor system with and method for output glitch reduction |
| 01/04/2007 | US20070001717 Driver circuit |
| 01/04/2007 | US20070001300 Semiconductor device |
| 01/04/2007 | US20070001092 Light Reception Output Controlling Apparatus of Photo Detector in Optical Pickup Unit |
| 01/04/2007 | DE102005030475A1 Anordnung zur Strom-Spannungs-Wandlung Arrangement for current-voltage conversion |
| 01/04/2007 | DE102005030049A1 Treiberschaltung für eine Telefonleitung A drive circuit for a telephone line |
| 01/04/2007 | DE10137150B4 Leitungstreiber zur Datenübertragung Line driver for data transmission |
| 01/03/2007 | EP1739845A2 Altering transmit power amplifier characteristics according to input signal characteristics |
| 01/03/2007 | EP1739826A1 Ultra low-frequency response, dc-blocked low-noise amplifier |
| 01/03/2007 | EP1739517A2 Semiconductor integrated circuit device |
| 01/03/2007 | EP1739318A1 Magnetic bearing and turbo-molecular pump having it |
| 01/03/2007 | EP1269707B1 Device for producing a phase and amplitude modulated radio frequency signal |
| 01/03/2007 | CN1890876A Gain-variable voltage/current converting circuit having current compensating circuit for compensating for variation of DC current flowing through active element that performs voltage/current conversio |
| 01/03/2007 | CN1890875A High-frequency amplifier and high-frequency radio communication device |
| 01/03/2007 | CN1890874A Photo-receiving pre-amplifier |
| 01/03/2007 | CN1293774C Digital feedback linearizing apparatus to linearize power amplifier and method used by the apparatus |
| 01/02/2007 | US7158771 Integrated circuit transponder having a plurality of high-gain radio frequency signal inputs |
| 01/02/2007 | US7158729 Optical receiving device |
| 01/02/2007 | US7158447 Sonar transmitter |
| 01/02/2007 | US7158386 Balanced radio frequency power amplifier with temperature compensation |
| 01/02/2007 | US7157977 Automatic gain control feedback amplifier |
| 01/02/2007 | US7157976 High frequency amplifier |
| 01/02/2007 | US7157975 Cross-differential amplifier |
| 01/02/2007 | US7157973 Layout technique for matched resistors on an integrated circuit substrate |
| 01/02/2007 | US7157972 Common gate with resistive feed-through low noise amplifier |
| 01/02/2007 | US7157971 Low-distortion differential circuit |
| 01/02/2007 | US7157970 Rail-to-rail-input buffer |
| 01/02/2007 | US7157969 Low distortion class D amplifier using a controlled delay |
| 01/02/2007 | US7157968 Method and apparatus for protecting a switching amplifier from excess current |
| 01/02/2007 | US7157965 Summing power amplifier |
| 01/02/2007 | US7157964 Multi-output switching amplifier |
| 01/02/2007 | US7157963 Methods and apparatus for controlling the output voltage of a switched-mode power supply |
| 01/02/2007 | US7157684 Receiving circuit for free-space optical communication |
| 12/28/2006 | WO2006138102A1 Temperature compensated voltage regulator integrated with mmic's |
| 12/28/2006 | US20060293004 Semiconductor integrated circuit device and wireless communication system |
| 12/28/2006 | US20060293003 High-efficiency modulating RF amplifier |
| 12/28/2006 | US20060293002 High-efficiency modulating RF amplifier |
| 12/28/2006 | US20060293001 Apparatus for mobile communication system |
| 12/28/2006 | US20060290692 Semiconductor device and electronic apparatus using the same |
| 12/28/2006 | US20060290432 Direct current offset canceling circuit of trans-impedance amplifier and automatic gain control trans-impedance amplifier thereof |
| 12/28/2006 | US20060290431 Semiconductor device |
| 12/28/2006 | US20060290430 Receiving amplifier, in particular for television receivers, and use of the receiving amplifier |
| 12/28/2006 | US20060290428 Variable gain amplifier with temperature compensation and gain linearity enhancement |
| 12/28/2006 | US20060290427 Low voltage operational amplifier |
| 12/28/2006 | US20060290426 High performance differential amplifiers with thick oxide devices for high impedance nodes |
| 12/28/2006 | US20060290425 Isolated conversion apparatus for analog signal |
| 12/28/2006 | US20060290423 Systems of miniaturized compatible radio frequency wireless devices |
| 12/28/2006 | US20060290402 Programmable logic device having an embedded differential clock tree |
| 12/27/2006 | EP1735907A2 Highly linear variable gain amplifier |
| 12/27/2006 | EP1735889A2 Class e amplifier with inductive clamp |
| 12/27/2006 | EP1654801B1 Integrated power amplifier circuit |
| 12/27/2006 | EP1599892B1 High efficiency emitter for incandescent light sources |
| 12/27/2006 | EP1540815B1 Composite power amplifier |
| 12/27/2006 | EP1410126B1 Differential current source with active common mode reduction |
| 12/27/2006 | CN1886893A Power amplifier and method for split voice coil transducer or speaker |
| 12/27/2006 | CN1886892A Amplifier and communication apparatus |