| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 03/15/2007 | US20070057727 Differential Operational Amplifier |
| 03/15/2007 | US20070057726 Amplification circuit improved with linearity and frequency converter using the same |
| 03/15/2007 | US20070057725 Selective differential low-noise amplifier |
| 03/15/2007 | US20070057724 Operational amplifier |
| 03/15/2007 | US20070057723 High performance input receiver circuit for reduced-swing inputs |
| 03/15/2007 | US20070057722 Power amplification apparatus of a portable terminal |
| 03/15/2007 | US20070057721 System for amplifiers with low distortion and low output impedance |
| 03/15/2007 | US20070057720 Systems and methods for load detection and correction in a digital amplifier |
| 03/14/2007 | EP1763131A1 Operational amplifier |
| 03/14/2007 | EP1763129A1 Distortion compensation circuit |
| 03/14/2007 | EP1762853A2 Device and method for determining a load current |
| 03/14/2007 | EP1319224A4 Dynamic power sharing in a multi-channel sound system |
| 03/14/2007 | CN2879535Y 室内功率放大系统 Indoor power amplification system |
| 03/14/2007 | CN2879534Y Audio power amplifier |
| 03/14/2007 | CN2879495Y Remote circuit structure with operational amplifier circuit electricity-proof wall distinguishing variable electric appliances with flag bit |
| 03/14/2007 | CN1930784A Transmission device and radio communication device |
| 03/14/2007 | CN1930775A Pilot signal detecting circuit, and semiconductor integrated circuit incorporating that circuit |
| 03/14/2007 | CN1930774A Switch mode power supply with output voltage equalizer |
| 03/14/2007 | CN1930772A Temperature compensating circuit |
| 03/14/2007 | CN1930400A Magnetic bearing and turbo-molecular pump having it |
| 03/14/2007 | CN1929316A Variable gain RF amplifier |
| 03/14/2007 | CN1929300A Apparatus and method to control audio volume in D class amplifier |
| 03/14/2007 | CN1929296A 斩波放大器电路及半导体装置 Chopper amplifier circuit and semiconductor device |
| 03/14/2007 | CN1929295A Dynamic bias circuit for a radio-frequency amplifier |
| 03/14/2007 | CN1305217C Hysteresis circuit used for comparator |
| 03/13/2007 | US7190934 Reflected power suppression circuit |
| 03/13/2007 | US7190239 Variable inductor, oscillator including the variable inductor and radio terminal comprising this oscillator, and amplifier including the variable inductor and radio terminal comprising this amplifier |
| 03/13/2007 | US7190230 Method and apparatus for an LNA with high linearity and improved gain control |
| 03/13/2007 | US7190229 Shared-current electronic systems with precise proportioning |
| 03/13/2007 | US7190227 Variable-gain amplifier having error amplifier with constant loop gain |
| 03/13/2007 | US7190226 Analog delay chain having more uniformly distributed capacitive loads and analog delay cell for use in chain |
| 03/13/2007 | US7190225 Efficient low EMI switching output stages and methods |
| 03/13/2007 | US7190224 Class D amplifier |
| 03/13/2007 | US7190218 Differential or single-ended amplifier and relative control method |
| 03/13/2007 | US7190217 System, method and apparatus for providing ground separation between different environments |
| 03/13/2007 | US7190214 Amplifier apparatus for use with a sensor |
| 03/08/2007 | WO2007025995A1 Device and method for amplifying pulsed rf signals |
| 03/08/2007 | WO2007025548A1 A self-oscillating modulator |
| 03/08/2007 | US20070053699 Optical receiver |
| 03/08/2007 | US20070052482 Low noise amplifier for a radio receiver |
| 03/08/2007 | US20070052480 Circuit which can be programmed using a resistor and which has a reference current source |
| 03/08/2007 | US20070052478 Low distortion class-d amplifier using carrier reference signal symmetry modulation. |
| 03/08/2007 | US20070052477 Efficient power supply for rapidily changing power requirements |
| 03/08/2007 | US20070052475 Method and apparatus for combining multiple signals for high efficiency applications |
| 03/08/2007 | US20070052451 Differential inverter circuit |
| 03/08/2007 | US20070052450 Current feedback amplifiers |
| 03/07/2007 | EP1759455A2 Distributed active transformer power control techniques |
| 03/07/2007 | EP1759454A1 Power amplifier and pulse-width modulated amplifier |
| 03/07/2007 | EP1759219A1 Method and apparatus to reduce jitter by adjusting vertical offset |
| 03/07/2007 | EP1623501B1 Systems and methods for providing multi channel pulse width modulated audio with staggered outputs |
| 03/07/2007 | EP1328962B1 Amplified cmos transducer for single photon read-out of photodetectors |
| 03/07/2007 | EP1201027B1 Parallel amplifier architecture using digital phase control techniques |
| 03/07/2007 | CN1926768A Signal processing device and method, signal processing program, and recording medium where the program is recorded |
| 03/07/2007 | CN1926761A Power amplifying apparatus, power combining system and delay measuring method for power combining system |
| 03/07/2007 | CN1926760A 高输出放大器 High-output amplifier |
| 03/07/2007 | CN1926759A 放大器 Amplifier |
| 03/07/2007 | CN1926491A 基准电压产生电路 Reference voltage generating circuit |
| 03/07/2007 | CN1925318A High-frequency power amplifier |
| 03/07/2007 | CN1925317A AB kind amplifier |
| 03/07/2007 | CN1925316A Resistance synthesized two-way sampling loop reverse feedback method and its amplifier |
| 03/07/2007 | CN1303757C Reference voltage generating circuit and voltage amplifier adopting same |
| 03/07/2007 | CN1303756C Offset compensation circuit and drive circuit and liquid crystal display device using it |
| 03/06/2007 | US7187909 Current mode transmitter |
| 03/06/2007 | US7187239 Multi-band low noise amplifier |
| 03/06/2007 | US7187238 Circuit for adjusting the operating point of multiple gate field effect transistors |
| 03/06/2007 | US7187237 Use of analog-valued floating-gate transistors for parallel and serial signal processing |
| 03/06/2007 | US7187236 Rail-to-rail differential input amplification stage with main and surrogate differential pairs |
| 03/06/2007 | US7187235 Class AB rail-to-rail operational amplifier |
| 03/06/2007 | US7187233 Floating bridge amplifier system |
| 03/06/2007 | US7187232 Feed forward amplifier employing positive feedback pilot generation with automatic level control |
| 03/06/2007 | US7187214 Amplifier circuit having constant output swing range and stable delay time |
| 03/06/2007 | US7187061 Use of a down-bond as a controlled inductor in integrated circuit applications |
| 03/01/2007 | WO2007025262A2 Circuit for creating tracking transconductors of different types |
| 03/01/2007 | WO2007023629A1 Transimpedance amplifier |
| 03/01/2007 | WO2006017846A3 Low noise optical receiver |
| 03/01/2007 | US20070046377 Power distribution and biasing in RF switch-mode power amplifiers |
| 03/01/2007 | US20070046376 Neutralization of feedback capacitance in amplifiers |
| 03/01/2007 | US20070046374 Linearity-improved differential amplification circuit |
| 03/01/2007 | US20070046373 Input buffer design using common-mode feedback (CMFB) |
| 03/01/2007 | US20070046372 Portable electronic unit |
| 03/01/2007 | US20070046368 Circuit for creating tracking transconductors of different types |
| 03/01/2007 | US20070046367 Method and apparatus for presetting an amplifier |
| 03/01/2007 | US20070046365 Bias circuit having transistors that selectively provide current that controls generation of bias voltage |
| 03/01/2007 | US20070045520 Photoelectric conversion device and imaging device |
| 03/01/2007 | US20070045519 Photocurrent amplifier circuit and optical pick-up device |
| 03/01/2007 | DE10036127B4 Vorrichtung zur Versorgungsspannungsentkopplung für HF-Verstärkerschaltungen Device for supplying voltage for decoupling RF amplifier circuits |
| 02/28/2007 | EP1758243A1 Low offset Sample-and-Hold and Amplifier |
| 02/28/2007 | EP1758242A1 High-efficiency amplifier |
| 02/28/2007 | EP1756951A1 Segmented switching power amplifier |
| 02/28/2007 | EP1756945A1 Current-mode instrumentation amplifier gain error correction circuitry |
| 02/28/2007 | EP1756944A1 Current-mode instrumentation amplifier |
| 02/28/2007 | EP1756943A1 Automatic current reduction biasing technique for rf amplifier |
| 02/28/2007 | EP1756942A2 Dvd reading apparatus |
| 02/28/2007 | EP1756941A2 Multi-band low noise amplifier system |
| 02/28/2007 | EP1756690A1 Precision chopper-stabilized current mirror |
| 02/28/2007 | EP1402625B1 Composite amplifier with optimized linearity and efficiency |
| 02/28/2007 | CN1922788A Load insensitive power amplifier |
| 02/28/2007 | CN1922466A Series bridge circuit |
| 02/28/2007 | CN1921310A Comparator with multiple gain stages |
| 02/28/2007 | CN1921295A Cascode circuit |