| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 01/03/2008 | US20080001668 Impedance control device and impedance control method |
| 01/03/2008 | US20080001667 Circuitry For Adaptively Generating And Using A Reference Voltage |
| 01/03/2008 | US20080001666 Saturation Detector and Warning Circuit Including Clamp |
| 01/03/2008 | US20080001665 Ultra wide band, differential input/output, high frequency active splitter in an integrated circuit |
| 01/03/2008 | US20080001664 Compound automatic gain control |
| 01/03/2008 | US20080001663 Low voltage CMOS differential amplifier |
| 01/03/2008 | US20080001662 Operational amplifier of class ab |
| 01/03/2008 | US20080001661 Regulator circuit |
| 01/03/2008 | US20080001660 Power Amplifier and Pulse-Width Modulated Amplifier |
| 01/02/2008 | EP1873911A2 Ultra-wide band differential input/output, high frequency active combiner in an integrated circuit. |
| 01/02/2008 | EP1873910A1 Ultra-wide band differential input/output, high frequency amplifier in an integrated circuit |
| 01/02/2008 | EP1873909A2 Ultra wide band, differental Input/output , high frequency active splitter in an integrated circuit. |
| 01/02/2008 | EP1873908A1 Transmit-receive circuit with PIN diodes |
| 01/02/2008 | EP1873907A1 RF amplifier with pulse detection and bias control |
| 01/02/2008 | EP1873906A2 Amplifier control device |
| 01/02/2008 | EP1873786A2 Thin film semiconductor device and manufacturing method |
| 01/02/2008 | EP1872473A1 A method for voltage modulation |
| 01/02/2008 | EP1344313B1 Microwave amplifier with bypass segment |
| 01/02/2008 | EP1296447B1 High-frequency amplifying device |
| 01/02/2008 | CN101098171A Method for applying radio frequency feedforward technique in power amplifier |
| 01/02/2008 | CN101098134A Power supply switch controller |
| 01/02/2008 | CN101098129A Method and apparatus to supply power voltage to a mobile device in a variable manner |
| 01/02/2008 | CN101098128A Single stage balanced valve amplifier |
| 01/02/2008 | CN101098127A RF power amplifier |
| 01/02/2008 | CN101098126A Regulated cascode circuits and cmos analog circuits include the same |
| 01/02/2008 | CN101098125A RF amplifier with pulse detection and bias control |
| 01/02/2008 | CN101098124A TDD RF high power LDMOS amplifier gate voltage control circuit |
| 01/02/2008 | CN100359957C High-frequency power amplifying electric unit and radio communication system |
| 01/02/2008 | CN100359690C Driver circuit |
| 01/01/2008 | US7315876 System and method for providing delay line and/or finite impulse response filters using a lossless and dispersion-free transmission line |
| 01/01/2008 | US7315212 Circuits and methods for implementing transformer-coupled amplifiers at millimeter wave frequencies |
| 01/01/2008 | US7315210 Differential operational amplifier |
| 01/01/2008 | US7315209 Power amplifier apparatus and DC component removing method |
| 01/01/2008 | US7315207 Doherty amplifier and its distortion characteristic compensation method |
| 01/01/2008 | US7315206 Travelling-wave amplifier |
| 01/01/2008 | US7315203 D-class audio power amplifier and method thereof |
| 01/01/2008 | US7315202 Pulse-width modulation amplifier and suppression of clipping therefor |
| 01/01/2008 | US7315016 Electric device and method for driving an organic diode in a light sensing state |
| 12/27/2007 | WO2007149028A1 Transmitter with pre-conditioning of amplifier signal |
| 12/27/2007 | WO2007148753A1 Transmission circuit and communication device |
| 12/27/2007 | WO2007147240A1 Integrated implementation of a voltage boost follower and method therefor |
| 12/27/2007 | US20070298845 Monolithic optical read-out circuit |
| 12/27/2007 | US20070297531 Contactless ic card system |
| 12/27/2007 | US20070296507 Cascode-connected amplifier circuit, semiconductor integrated circuit using same, and receiving apparatus using same |
| 12/27/2007 | US20070296506 High frequency amplifier configuration for improved feedback capacitance neutralization |
| 12/27/2007 | US20070296505 Power amplifier suppressing radiation of second harmonic over wide frequency band |
| 12/27/2007 | US20070296504 Integrated implementation of a voltage boost follower and method therefor |
| 12/27/2007 | US20070296503 Radio frequency amplifier circuit and mobile communication terminal using the same |
| 12/27/2007 | US20070296499 Amplifier circuit having a compensation circuit coupled to an output node of an operational amplifier for improving loop stability |
| 12/27/2007 | US20070296498 High linearity low noise variable gain amplifier with continuous gain control |
| 12/27/2007 | US20070296497 Amplifier circuit with cross-coupled cascode transistors |
| 12/27/2007 | US20070296496 Apparatus for reducing offset voltage drifts in a charge amplifier circuit |
| 12/27/2007 | US20070296492 Single Stage Balanced Voltage Amplifier |
| 12/27/2007 | US20070296491 Noise-shaping amplifier with waveform lock |
| 12/27/2007 | US20070296489 Audio system and processing method of storing and reproducing digital pulse width modulation signal |
| 12/27/2007 | CA2653469A1 Transmitter with intelligent pre-conditioning of amplifier signal |
| 12/26/2007 | EP1871005A1 In-line distortion cancellation circuits for linearization of electronic and optical signals with phase and frequency adjustment |
| 12/26/2007 | EP1869777A2 Radio frequency power amplifier and corresponding method |
| 12/26/2007 | EP1869769A4 Improved radio frequency digital-to-analog converter |
| 12/26/2007 | EP1869769A2 Improved radio frequency digital-to-analog converter |
| 12/26/2007 | EP1869764A2 Magnetic field tolerant amplifier and wireless transceiver using the same |
| 12/26/2007 | EP1869763A1 Device comprising a switching amplifier and a load |
| 12/26/2007 | EP1645040A4 Variable attenuation system having continuous input steering |
| 12/26/2007 | EP1119907B1 Method of and arrangement for converting voltage to current |
| 12/26/2007 | CN101095281A Methods and systems for signal amplification through envelope removal and restoration |
| 12/26/2007 | CN101094023A Magnifier device for mode antenna |
| 12/26/2007 | CN101093977A True logarithm amplifier |
| 12/25/2007 | US7313370 Intermodulation product cancellation in communications |
| 12/25/2007 | US7312732 Devices and methods for calibrating amplifier stages and for compensating for errors in amplifier stages of series-connected components |
| 12/25/2007 | US7312673 Radial power divider/combiner |
| 12/25/2007 | US7312661 RF power amplifier |
| 12/25/2007 | US7312660 Differential amplifier and active load for the same |
| 12/25/2007 | US7312659 Multi-amplifier circuit |
| 12/25/2007 | US7312658 Differential amplifier with two outputs and a single input of improved linearity |
| 12/25/2007 | US7312657 Class D amplifier |
| 12/25/2007 | US7312655 Apparatus and method for controlling bias adaptation bias of a high power amplifier |
| 12/25/2007 | US7312654 Quiet power up and power down of a digital audio amplifier |
| 12/25/2007 | US7312482 Semiconductor device, power amplifier device and PC card |
| 12/21/2007 | WO2007144958A1 Power amplifier control device, power amplifier control program, and power amplifier control method |
| 12/21/2007 | WO2007144957A1 Power amplifier control device, power amplifier control program, and power amplifier control method |
| 12/21/2007 | WO2007143844A1 Improved control of switcher regulated power amplifier modules |
| 12/21/2007 | WO2007143843A1 Input drive control for switcher regulated power amplifier modules |
| 12/20/2007 | US20070292139 Receiving Method and Receiving Circuit |
| 12/20/2007 | US20070291873 Transmitter Apparatus and Wireless Communication Apparatus |
| 12/20/2007 | US20070290762 Two-port dual-gate HEMT for discrete device application |
| 12/20/2007 | US20070290759 Analog transconductance amplifier |
| 12/20/2007 | US20070290757 Input system for a variable gain amplifier having class-ab transconductance stages |
| 12/20/2007 | US20070290754 Push-pull amplifier and method for low noise amplification |
| 12/20/2007 | US20070290753 Method and system for varying gain exponentially with respect to a control signal |
| 12/20/2007 | US20070290752 Adjusting methods of arithmetic multiplying circuit, drive circuit, and phase margin |
| 12/20/2007 | US20070290751 Regulator circuit |
| 12/20/2007 | US20070290750 Circuit for reducing distortion of class d amplifier |
| 12/20/2007 | US20070290742 Method For Controlling A Linear Power Amplifier |
| 12/20/2007 | US20070290726 Driving device and driving method |
| 12/20/2007 | US20070290721 Method and apparatus for amplifying a regulated differential signal to a higher voltage |
| 12/19/2007 | EP1868290A2 Reconfigurable frequency filter |
| 12/19/2007 | EP1867040A2 Gate driver for class d audio amplifier with adaptive dv/dt control |
| 12/19/2007 | EP1867039A1 An electrical circuit, a detection system and an operating method thereof |
| 12/19/2007 | EP1433256A4 Circuits and methods for output impedance matching in switched mode circuits |
| 12/19/2007 | EP1327301B1 Amplification circuit with improved linearity |