| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 01/14/2010 | US20100007420 Operational amplifier |
| 01/14/2010 | US20100007419 Instrumentation Input Systems |
| 01/14/2010 | US20100007418 Input system for a variable gain amplifier having class-ab transconductance stages |
| 01/14/2010 | US20100007417 Differential amplifier with symmetric circuit topology |
| 01/14/2010 | US20100007413 Ecg electrode contact quality measurement system |
| 01/14/2010 | US20100007412 Pulsed load modulation amplifier and method |
| 01/14/2010 | US20100007411 Premium power amplifier |
| 01/14/2010 | US20100007410 Switch method for switching class amplifiers |
| 01/14/2010 | US20100007387 Triangular wave generating circuit having synchronization with external clock |
| 01/14/2010 | DE102008040291A1 Audioverstärker sowie Verfahren zur Umkonfiguration eines Audioverstärkers Audio amplifier and to methods of reconfiguring an audio amplifier |
| 01/14/2010 | CA2728901A1 Method of achieving high selectivity in receiver rf front-ends |
| 01/14/2010 | CA2728337A1 Method and apparatus for power converter for class d audio power amplifiers |
| 01/14/2010 | CA2725037A1 Audio amplifier and method for reconfiguring an audio amplifier |
| 01/13/2010 | EP2144412A1 Differential to single-ended voltage converter |
| 01/13/2010 | EP2144366A1 Amplifier circuit |
| 01/13/2010 | EP2143209A1 Digital hybrid mode power amplifier system |
| 01/13/2010 | EP2143200A1 Metal-oxide-semiconductor circuit designs and methods for operating same |
| 01/13/2010 | EP1346471B1 Envelope restoration scheme for linear high-efficiency power amplification |
| 01/13/2010 | CN201383865Y High-power switching power supply MOSFET audio power amplifier |
| 01/13/2010 | CN201382975Y Phase noise tester |
| 01/13/2010 | CN201382008Y Wind-speed gear control circuit of blast blower |
| 01/13/2010 | CN101627551A Digital convertible radio SNR optimization |
| 01/13/2010 | CN100581050C Self zeroing method and device for critical, continuous-time applications |
| 01/12/2010 | US7646251 Radio frequency application circuit |
| 01/12/2010 | US7646250 Signal converter having compensation unit |
| 01/12/2010 | US7646249 Cross-differential amplifier |
| 01/12/2010 | US7646248 Harmonic tuned doherty amplifier |
| 01/12/2010 | US7646245 Amplifier |
| 01/12/2010 | US7646244 Apparatus and method for unity gain buffer with high switching speed and low quiescent current |
| 01/12/2010 | US7646243 Controlled transconductance differential stage |
| 01/12/2010 | US7646242 Operational amplifier circuit, constant voltage circuit using the same, and apparatus using the constant voltage circuit |
| 01/12/2010 | US7646241 Low-voltage operational amplifier and operational amplifying method |
| 01/12/2010 | US7646240 Class D amplifier |
| 01/12/2010 | US7646239 Feed-forward amplifier |
| 01/07/2010 | WO2010002932A2 Method and system for auditory enhancement and hearing conservation |
| 01/07/2010 | WO2010002769A2 A circuit with one or more depletion mode transistors |
| 01/07/2010 | WO2010002570A2 Differential source follower source leader addressable node readout circuit |
| 01/07/2010 | WO2010002488A1 Radio frequency (rf) envelope pulsing using phase switching of switch-mode power amplifiers |
| 01/07/2010 | WO2010001806A1 Power amplification device and power amplification method |
| 01/07/2010 | WO2010001357A1 A pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications |
| 01/07/2010 | WO2010001077A2 Circuit for amplifying a signal representing a variation in resistance of a variable resistance and corresponding capacitor |
| 01/07/2010 | WO2010000635A1 Switched capacitor amplifier |
| 01/07/2010 | US20100001802 Integrated doherty type amplifier arrangement with high power efficiency |
| 01/07/2010 | US20100001800 Bootstrapped class ab cmos output stage |
| 01/07/2010 | US20100001799 Amplifier current drive reversal |
| 01/07/2010 | US20100001798 Digitally programmable transconductance amplifier and mixed-signal circuit using the same |
| 01/07/2010 | US20100001797 Differential amplifier |
| 01/07/2010 | US20100001796 Radio Frequency (RF) Envelope Pulsing Using Phase Switching of Switch-Mode Power Amplifiers |
| 01/07/2010 | US20100001794 Method and system for increasing sampling frequency for switching amplifiers |
| 01/07/2010 | US20100001793 High efficiency modulating rf amplifier |
| 01/07/2010 | US20100001765 Sense amplifier for low voltage high speed sensing |
| 01/07/2010 | US20100001667 Control circuit of a full-bridge stage |
| 01/07/2010 | US20100001173 In-cell current subtraction for infrared detectors |
| 01/07/2010 | CA2729678A1 Method and system for auditory enhancement and hearing conservation |
| 01/06/2010 | EP2141803A1 Signal amplifier for optical receiving circuit |
| 01/06/2010 | EP2141802A1 Switched capacitor amplifier |
| 01/06/2010 | EP2141799A1 High speed voltage following device for analog-to-digital conversion system. |
| 01/06/2010 | EP2141798A1 Amplifier apparatus |
| 01/06/2010 | CN201378865Y Volume control device |
| 01/06/2010 | CN201378827Y High-synthesis-efficiency millimeter-wave band power amplifier |
| 01/06/2010 | CN101622784A Chopper-stabilized instrumentation amplifier for wireless telemetry |
| 01/06/2010 | CN101621282A Millimeter-wave single-chip integrated low-noise amplifier (LNA) |
| 01/06/2010 | CN101621281A Chopper stabilized amplifier |
| 01/06/2010 | CN100578934C Delay line calibration circuit comprising asynchronous arbiter element |
| 01/06/2010 | CN100578932C Transmitting circuit, communication equipment, audio equipment, video equipment, and transmitting method |
| 01/06/2010 | CN100578925C Differential amplifier |
| 01/06/2010 | CN100578924C Processing method for output stage circuit, power amplification circuit and electrical signal |
| 01/06/2010 | CN100578923C Method for adjusting power amplification efficiency |
| 01/06/2010 | CN100578922C High efficiency power amplifier |
| 01/06/2010 | CN100578919C Amplifier unit and method of detecting failure in the same |
| 01/06/2010 | CN100578918C True logarithm amplifier |
| 01/06/2010 | CN100578917C Gain amplifier circuit that minimizes the miller effect |
| 01/06/2010 | CN100578596C Drive circuit, operation state detection circuit, and display device |
| 01/05/2010 | US7643814 Reception arrangement with preamplifier circuit |
| 01/05/2010 | US7643264 Power supply controller and method for controlling power supply circuit |
| 01/05/2010 | US7643018 Twisted pair communications line system |
| 01/05/2010 | US7642860 Current pre-amplifier and associated current comparator |
| 01/05/2010 | US7642859 Power amplifier |
| 01/05/2010 | US7642858 Active baluns |
| 01/05/2010 | US7642857 Current limit circuit for compensating for output load mismatch of an RF power amplifier |
| 01/05/2010 | US7642856 Amplifier capable of using a power supply voltage higher than its process voltages |
| 01/05/2010 | US7642854 Amplifier circuit having an output transistor for driving a complex load |
| 01/05/2010 | US7642853 High-swing operational amplifier output stage using adaptive biasing |
| 01/05/2010 | US7642852 Resistor self-trim circuit for increased performance |
| 01/05/2010 | US7642851 Variable gain amplifier insensitive to process voltage and temperature variations |
| 01/05/2010 | US7642849 Multiple-input and multiple-output amplifier |
| 01/05/2010 | US7642847 Power supply processing for power amplifiers |
| 12/31/2009 | US20090322430 Semiconductor package with reduced inductive coupling between adjacent bondwire arrays |
| 12/31/2009 | US20090322429 Variable gain current input amplifier and method |
| 12/31/2009 | US20090322428 Tunable linear operational transconductance amplifier |
| 12/31/2009 | US20090322427 Transistor and routing layout for a radio frequency integrated cmos power amplifier device |
| 12/31/2009 | US20090322426 Output Short Circuit and Load Detection |
| 12/31/2009 | US20090322421 Power efficient transmitter with high dynamic range |
| 12/31/2009 | US20090321613 Differential Source Follower Source Leader Addressable Node Readout Circuit |
| 12/31/2009 | DE102009025958A1 Verstärker mit Zerhackerstabilisierung Amplifier with chopper stabilization |
| 12/30/2009 | WO2009155744A1 Signal converting circuit and isolation amplifier |
| 12/30/2009 | EP2139108A1 A method for signal amplification using a power amplifier system, a power ampifier system, a base station, a mobile station and a communication network therefor |
| 12/30/2009 | EP2138815A1 Photometric device |
| 12/30/2009 | EP2137817A2 Application of signal advance amplification to analog waveform or signal detection, acquisition and processing |
| 12/30/2009 | EP2137815A2 Power supply providing ultrafast modulation of output voltage |