| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 03/11/2008 | US7342418 Low voltage differential signal receiver |
| 03/11/2008 | US7342212 Analog vertical sub-sampling in an active pixel sensor (APS) image sensor |
| 03/06/2008 | WO2008028034A2 High speed, high current gain voltage buffer and method |
| 03/06/2008 | WO2008027933A2 Low noise amplifier with embedded filter and related wireless communication unit |
| 03/06/2008 | WO2008026972A1 Switch-less bidirectional amplifier |
| 03/06/2008 | WO2008026585A1 Digital amplifier |
| 03/06/2008 | WO2008026528A1 Transconductance amplifier |
| 03/06/2008 | WO2008026228A1 Differential to single-ended conversion circuit and comparator using the circuit |
| 03/06/2008 | WO2007087568A3 Systems and methods for improving performance in a digital amplifier by adding an ultrasonic signal to an input audio signal |
| 03/06/2008 | US20080058001 Power amplifier system and mobile phone terminal using same |
| 03/06/2008 | US20080056732 Receiving Circuit and Optical Signal Receiving Circuit |
| 03/06/2008 | US20080056513 Amplifier apparatus and method |
| 03/06/2008 | US20080055447 Circuit for processing a time-discrete analog signal and image sensor |
| 03/06/2008 | US20080055005 Feedback-type variable gain amplifier and method of controlling the same |
| 03/06/2008 | US20080055004 Amplifiers, methods of increasing current gain in amplifiers, and imaging devices |
| 03/06/2008 | US20080055003 Reduction of voltage spikes in switching half-bridge stages |
| 03/06/2008 | US20080055001 Power amplifying apparatus and mobile communication terminal |
| 03/06/2008 | US20080055000 Amplification Apparatus |
| 03/06/2008 | US20080054955 Radio frequency doubler |
| 03/06/2008 | US20080054162 Optical semiconductor device and optical pickup device |
| 03/05/2008 | EP1895656A2 High gain, high speed comparator operable at low current |
| 03/05/2008 | EP1895655A1 Output circuit of vacuum-tube amplifier |
| 03/05/2008 | EP1532733B1 Receiving arrangement comprising a pre-amplifier circuit |
| 03/05/2008 | EP1430598B1 Dynamic biasing of a transmitter |
| 03/05/2008 | EP1256179B1 Front end and high frequency receiver having quadrature low noise amplifier |
| 03/05/2008 | EP1173923B1 Differential pair provided with degeneration means for degenerating a transconductance of the differential pair |
| 03/05/2008 | CN101136618A Tunable ferro-electric filter |
| 03/05/2008 | CN101136616A Sigma-Delta type power amplifier and modulation method thereof |
| 03/05/2008 | CN101136615A Class BB push-pull power amplifier |
| 03/05/2008 | CN101136614A Constant current circuit |
| 03/05/2008 | CN101136612A Amplifier device and method |
| 03/05/2008 | CN101136611A Amplifier device and method |
| 03/05/2008 | CN101136610A Amplifier device and method |
| 03/05/2008 | CN101136609A Amplifier apparatus and method |
| 03/05/2008 | CN101136590A DC-DC converter circuits and method and device containing said circuits |
| 03/05/2008 | CN100373783C Distortion compensation circuit, power amplifier using distortion compensation circuit, and distortion compensation signal generating method |
| 03/04/2008 | WO2008037261A1 Controlled power converter |
| 03/04/2008 | US7340227 Wireless communication system and semiconductor integrated circuit |
| 03/04/2008 | US7340226 Cartesian loop transmitter and method of adjusting an output level of such transmitter |
| 03/04/2008 | US7340069 System and method for split automatic gain control |
| 03/04/2008 | US7340066 Audio device heat transferring |
| 03/04/2008 | US7339997 Line driver and method of operating the same |
| 03/04/2008 | US7339760 Integrated bias and offset recovery amplifier |
| 03/04/2008 | US7339437 Ultra-wideband constant gain CMOS amplifier |
| 03/04/2008 | US7339433 Differential amplifier stage |
| 03/04/2008 | US7339432 Variable gain amplifier and differential amplifier |
| 03/04/2008 | US7339431 CMOS amplifiers with frequency compensating capacitors |
| 03/04/2008 | US7339430 Rail-to-rail operational amplifier with an enhanced slew rate |
| 03/04/2008 | US7339429 Adjusting methods of arithmetic multiplying circuit, drive circuit, and phase margin |
| 03/04/2008 | US7339428 Dual op amp IC with single low noise op amp configuration |
| 03/04/2008 | US7339427 Analogue power control in a saturated amplifier |
| 03/04/2008 | US7339425 Class-D audio amplifier with half-swing pulse-width-modulation |
| 03/04/2008 | US7339424 Apparatus and method for controlling temperature of electronic apparatus |
| 03/04/2008 | US7339422 Amplifier circuit and display device |
| 03/04/2008 | US7339421 Differential circuit and receiver with same |
| 03/04/2008 | US7339154 Level detector |
| 02/28/2008 | WO2008024393A1 Series fed amplified antenna reflect array |
| 02/28/2008 | WO2008023530A1 Transconductance amplifier |
| 02/28/2008 | WO2008023487A1 Gate bias circuit |
| 02/28/2008 | WO2008023395A1 Buffer device for switched capacity circuit |
| 02/28/2008 | WO2008023340A2 Filter-tracking and control method |
| 02/28/2008 | WO2008008751A3 Power amplifier with output voltage compensation |
| 02/28/2008 | US20080051044 Transmission power amplifier apparatus for combining power-amplified constant amplitude signals each having controlled constant amplitude value and phase |
| 02/28/2008 | US20080048784 Medium Voltage or High Voltage Audio Power Amplifier and Protection Circuit |
| 02/28/2008 | US20080048783 Bias Circuit |
| 02/28/2008 | US20080048782 Circuit and method of establishing dc bias levels in an rf power amplifier |
| 02/28/2008 | US20080048780 Linearization apparatus of triode region type operational transconductance amplifier |
| 02/28/2008 | US20080048779 Active emi suppression circuit |
| 02/28/2008 | US20080048778 Amplifier with common-mode feedback circuit |
| 02/28/2008 | US20080048777 Semiconductor device |
| 02/28/2008 | US20080048774 High Efficiency Load Insensitive Power Amplifier |
| 02/28/2008 | US20080048753 Differential Reshaping Circuit |
| 02/28/2008 | US20080048732 Abnormality detection circuit |
| 02/28/2008 | US20080048728 Stable sense amplifier |
| 02/28/2008 | US20080048100 Method and system to differentially enhance sensor dynamic range using enhanced common mode reset |
| 02/27/2008 | EP1892829A1 Variable gain amplifier and ac power supply device using the same |
| 02/27/2008 | EP1891732A1 A power amplifier of a transmitter |
| 02/27/2008 | EP1891731A2 Fast setting, low noise, low offset operational amplifier and method |
| 02/27/2008 | EP1751855B1 Pulse width modulator system |
| 02/27/2008 | EP1262018B1 High-efficiency power modulators |
| 02/27/2008 | CN101133551A Differential amplifier circuit and method for reducing thermally induced offsets caused by large differential signals |
| 02/27/2008 | CN101132174A Drive circuit |
| 02/27/2008 | CN101132168A Prepositive differential amplifier and method for expanding its input range |
| 02/27/2008 | CN101132156A Piezoelectric ceramic driving circuit used for optical fiber stress adjustment |
| 02/27/2008 | CN100372220C Amplifier |
| 02/26/2008 | US7336794 High efficiency driver for miniature loudspeakers |
| 02/26/2008 | US7336753 Transmitter |
| 02/26/2008 | US7336133 Buffered cascode current mirror |
| 02/26/2008 | US7336132 High-frequency power amplifier circuit and electronic part for communication |
| 02/26/2008 | US7336129 Analog amplitude detector |
| 02/26/2008 | US7336127 Doherty amplifier configuration for a collector controlled power amplifier |
| 02/26/2008 | US7336126 Subtractor circuit and power detector arrangement having that subtractor circuit |
| 02/26/2008 | US7336124 Operational amplifier, line driver, and liquid crystal display device |
| 02/26/2008 | US7335872 Photocurrent amplifier circuit and optical pick-up device |
| 02/21/2008 | WO2008021707A2 A wide-band low-noise cmos amplifier |
| 02/21/2008 | WO2008020976A2 Bias circuit for maintaining high linearity at cutback power conditions |
| 02/21/2008 | WO2008020386A1 Power amplifier |
| 02/21/2008 | WO2008020384A1 Electronic device for self oscillating class d system |
| 02/21/2008 | WO2008020368A2 Rf transmitter with controlable rf power amplifier |
| 02/21/2008 | WO2007132274A3 High frequency low noise amplifier |