| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 01/29/2009 | US20090027124 Level-Shifting Buffer |
| 01/29/2009 | US20090027123 Controlled transconductance differential stage |
| 01/29/2009 | US20090027122 Compact Low-Power Class AB Amplifier |
| 01/29/2009 | US20090027121 Class D amplifier circuit |
| 01/29/2009 | US20090027120 Class-d amplifier with noise-immunity feedback |
| 01/29/2009 | US20090027118 Digital PWM Amplifier Having a Low Delay Corrector |
| 01/29/2009 | US20090027117 Low-Noise, Low-Distortion Digital PWM Amplifier |
| 01/29/2009 | DE102008023384A1 Strom-Rückkopplungs-Instrumentenverstärker mit selbsttätiger Nullpunkt-Einstellung Current-feedback instrumentation amplifier with automatic zero-setting |
| 01/28/2009 | EP2019485A2 System for controlling a class D amplifier |
| 01/28/2009 | EP1576726B1 Composite amplifier structure |
| 01/28/2009 | EP1504526B1 Improved variable gain amplifier |
| 01/28/2009 | CN101356725A Amplifier, amplifying method and filter |
| 01/28/2009 | CN101356724A Low noise amplifier and wireless communication system |
| 01/28/2009 | CN101355347A Gain amplifier for linear programmable switch capacitance |
| 01/28/2009 | CN101355346A Method for compensating frequency of wideband common mode feedback loop of two-stage operational amplifier |
| 01/28/2009 | CN101355345A Power amplifier |
| 01/28/2009 | CN100456641C Method and apparatus for optimizing transmitter power efficiency |
| 01/28/2009 | CN100456633C Power amplifier end stage |
| 01/28/2009 | CN100456198C Current switch circuit, amplifier, and mobile terminal |
| 01/27/2009 | US7484139 Amplifier fault detection circuit |
| 01/27/2009 | US7483495 Layered modulation for digital signals |
| 01/27/2009 | US7482894 Radial power divider/combiner using waveguide impedance transformers |
| 01/27/2009 | US7482887 Multi-band tunable resonant circuit |
| 01/27/2009 | US7482879 Variable gain amplifier and communication apparatus |
| 01/27/2009 | US7482877 Power protecting apparatus and method for power amplifier |
| 01/27/2009 | US7482876 Amplifier circuit and method for amplifying a signal to be amplified |
| 01/27/2009 | US7482875 High frequency power amplifier |
| 01/27/2009 | US7482874 Non-uniform distributed multi-stage circuits |
| 01/27/2009 | US7482872 Methods and apparatus for process invariant transconductance |
| 01/27/2009 | US7482871 CMOS amplifier of filter for ultra wideband application and method of the same |
| 01/27/2009 | US7482867 Single stage balanced voltage amplifier |
| 01/27/2009 | US7482865 Systems and methods for correcting errors resulting from component mismatch in a feedback path |
| 01/27/2009 | US7482843 Signal amplifier |
| 01/22/2009 | WO2008144722A3 Class ab output stage and method for providing wide supply voltage range |
| 01/22/2009 | WO2008088965A3 Tail-current steering circuit and method for rail-to-rail operational amplifier input stage |
| 01/22/2009 | WO2007127777A3 Circuit and method for driving bulk capacitance of amplifier input transistors |
| 01/22/2009 | WO2006019785A3 Programmable low noise amplifier and method |
| 01/22/2009 | US20090022339 Amplifier |
| 01/22/2009 | US20090022337 Signal amplifier circuit |
| 01/22/2009 | US20090022327 System having a pulse width modulation device |
| 01/22/2009 | US20090021309 Fully Integrated Ultra Wideband Transmitter Circuits and Systems |
| 01/22/2009 | US20090021308 Voltage Regulator Startup Method and Apparatus |
| 01/22/2009 | US20090021307 Multi-band, inductor re-use low noise amplifier |
| 01/22/2009 | US20090021306 Integrated circuit system for line regulation of an amplifier |
| 01/22/2009 | US20090021305 Class D amplifier |
| 01/22/2009 | US20090021301 Efficient Composite Amplifier |
| 01/22/2009 | US20090021295 Dual reactive shunt low noise amplifier |
| 01/21/2009 | EP2017957A2 Method of estimating an intersection between at least two continuous signal representations |
| 01/21/2009 | EP2017956A1 Radio signal amplifying device and method for generating and for amplifying a radio frequency signal |
| 01/21/2009 | EP2016739A1 Waveform encoding for wireless applications |
| 01/21/2009 | EP2016675A1 Cmos temperature compensated transmitter circuit with merged mixer and variable gain amplifier |
| 01/21/2009 | EP2016674A1 Pulse area modulation and high-efficiency linear power amplifier system using the same |
| 01/21/2009 | EP2016673A2 Gate leakage insensitive current mirror circuit |
| 01/21/2009 | EP1969719A4 System and method for providing distributed gain |
| 01/21/2009 | CN101351961A High-efficiency composite amplifier |
| 01/21/2009 | CN101350643A Method for compensating RF module performance and improved RF module |
| 01/21/2009 | CN101350601A Power amplifier and signal processing method thereof |
| 01/21/2009 | CN101350600A Class d amplifier |
| 01/21/2009 | CN101350599A Method, apparatus and base station for amplifying power |
| 01/21/2009 | CN101350598A Two-way feedback single-power supply audio power amplifier |
| 01/21/2009 | CN101350596A Delay modulator pre-distortion circuit for an amplifier |
| 01/21/2009 | CN100454362C Driving circuit for display device |
| 01/20/2009 | US7479833 Dynamic biasing amplifier apparatus, dynamic biasing apparatus and method |
| 01/20/2009 | US7479832 Differential amplifying system |
| 01/20/2009 | US7479831 Class AB differential current conveyor input stage for a fully differential current feedback amplifier |
| 01/20/2009 | US7479830 Differential amplifier using body-source cross coupling |
| 01/20/2009 | US7479829 Class D amplifier and infrared data receiving apparatus using the same |
| 01/20/2009 | US7479822 Current drive circuit reducing VDS dependency |
| 01/15/2009 | WO2009009652A2 Segmented power amplifier |
| 01/15/2009 | WO2009009647A1 Power amprifier amplitude modulator system and method |
| 01/15/2009 | WO2009009494A2 Switchable balanced amplifier |
| 01/15/2009 | WO2009009420A2 Low glitch offset correction circuit for auto-zero sensor amplifiers and method |
| 01/15/2009 | WO2009008975A2 Balanced amplifier with protection circuit |
| 01/15/2009 | WO2009006797A1 A device and method for biasing a transistor amplifier |
| 01/15/2009 | WO2008099113A3 Reconfigurable power amplifier and use of such amplifier for making a multistandard amplification stage for mobile phone communications |
| 01/15/2009 | US20090016548 Super regenerative (sr) apparatus having plurality of parallel sr amplifiers tuned to distinct frequencies |
| 01/15/2009 | US20090016539 A/v amplifier and method for driving the same |
| 01/15/2009 | US20090015337 Device and method for biasing a transistor amplifier |
| 01/15/2009 | US20090015334 Bypass Circuit for Radio-Frequency Amplifier Stages |
| 01/15/2009 | US20090015333 Power amplifier module and a time division multiple access radio |
| 01/15/2009 | US20090015332 Startup circuit for subregulated amplifier |
| 01/15/2009 | US20090015331 Current sense amplifier for voltage converter |
| 01/15/2009 | US20090015330 Variable transconductance circuit |
| 01/15/2009 | US20090015329 Low Voltage Track and Hold Circuits |
| 01/15/2009 | US20090015328 Low offset envelope detector and method of use |
| 01/15/2009 | US20090015327 Switching audio power amplifier with de-noise function |
| 01/15/2009 | US20090015325 Method and apparatus for pre-conditioning an electrical signal |
| 01/15/2009 | US20090015323 Balanced amplifier with protection circuit |
| 01/14/2009 | EP2015447A1 Class D amplifier circuit |
| 01/14/2009 | EP2013968A1 Operational amplifier |
| 01/14/2009 | EP2013967A2 Low power output stage |
| 01/14/2009 | EP2013630A2 Systems and methods of rf power transmission, modulation, and amplification |
| 01/14/2009 | EP1751856B1 Multi-channel pulse modulator system |
| 01/14/2009 | EP1685648B1 Amplifier provided with a regulation system controlled by the output stage |
| 01/14/2009 | CN201181929Y Output stage structure for reducing switch output transient noise of audio frequency power amplifier |
| 01/14/2009 | CN201181220Y Micro-current amplifier for spacing |
| 01/14/2009 | CN101345513A Switching audio power amplifier with de-noise function |
| 01/14/2009 | CN101345334A Printing antenna system of vehicle rear window glass |
| 01/14/2009 | CN101345333A Printing antenna system of vehicle rear window glass |
| 01/14/2009 | CN100452663C Transmission device, transmission power control method, and radio communication device |