| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 10/25/2007 | US20070247232 Eer High Frequency Amplifier |
| 10/25/2007 | US20070247231 DC-bias network for a distributed amplifier |
| 10/25/2007 | US20070247230 Gate leakage insensitive current mirror circuit |
| 10/25/2007 | US20070247229 Apparatus, amplifier, system and method for receiver equalization |
| 10/25/2007 | US20070247228 Apparatus for receiver equalization |
| 10/25/2007 | US20070247227 Circuit and method for driving bulk capacitance of amplifier input transistors |
| 10/25/2007 | US20070247226 Circuit for correcting signal distortions |
| 10/25/2007 | US20070247223 Class-D amplifier |
| 10/25/2007 | US20070247222 Systems and methods of RF power transmission, modulation and amplification, including embodiments for amplifier class transitioning |
| 10/25/2007 | US20070247221 Systems and methods of RF power transmission, modulation and amplification, including embodiments for amplifier class transitioning |
| 10/25/2007 | US20070247220 Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning |
| 10/25/2007 | US20070247219 Switching power amplifier |
| 10/25/2007 | US20070247208 Offset correcting method, offset correcting circuit, and electronic volume |
| 10/24/2007 | EP1848109A1 Temperature compensation of small signal gain for an amplifier stage |
| 10/24/2007 | EP1848108A2 Distortion compensating apparatus and method |
| 10/24/2007 | EP1848107A2 DC-bias network for a distributed amplifier |
| 10/24/2007 | EP1848106A2 Power amplifying apparatus using asymmetric power drive |
| 10/24/2007 | EP1847015A1 Electrical circuit |
| 10/24/2007 | EP1847014A1 Audio communication unit and integrated circuit |
| 10/24/2007 | EP0921635B1 Power amplifier device |
| 10/24/2007 | CN200966125Y A 40W dual carrier power amplifier for DPA system base station |
| 10/24/2007 | CN200966034Y Weak DC signal preamplifier circuit |
| 10/24/2007 | CN200966033Y Voltage-current conversion circuit |
| 10/24/2007 | CN200966032Y Weak AC signal preamplifier circuit |
| 10/24/2007 | CN101061615A Class e amplifier with inductive clamp |
| 10/24/2007 | CN101060310A A DC level switching circuit |
| 10/24/2007 | CN101060308A Temperature compensation of small signal gain for an amplifier stage |
| 10/24/2007 | CN101059940A Operation amplifier driving circuit for eliminating the operational amplifier offset voltage |
| 10/24/2007 | CN101059938A Optical sensor for sensing peripheral light and liquid crystal display device using the same |
| 10/24/2007 | CN100345442C Automatically setting an operative state of a wideband amplifier |
| 10/24/2007 | CN100345384C Analogue/digital conversion circuit of multistage pipeline type with regulating input signal |
| 10/23/2007 | US7286073 Device for detecting operation of operator on sound control apparatus |
| 10/23/2007 | US7286019 Method and system for amplifying a signal |
| 10/23/2007 | US7286018 Transistor circuit |
| 10/23/2007 | US7286017 Controllable RF broadband and amplifier with a constant input impedance |
| 10/23/2007 | US7286016 Amplifier bias circuit, method for biasing an amplifier and integrated circuit comprising an amplifier bias circuit |
| 10/23/2007 | US7286015 Linear-in-dB variable gain amplifiers with an adaptive bias current |
| 10/23/2007 | US7286014 Variable gain device |
| 10/23/2007 | US7286013 Coupled-inductance differential amplifier |
| 10/23/2007 | US7286010 Systems and methods for over-current protection |
| 10/23/2007 | US7286009 Digital PWM amplifier with simulation-based feedback |
| 10/23/2007 | US7286008 Digital amplifier |
| 10/21/2007 | CA2585593A1 Method for driving an ultrasonic handpiece with a class d amplifier |
| 10/21/2007 | CA2585590A1 System for driving an ultrasonic handpiece with a class d amplifier |
| 10/18/2007 | WO2007117248A1 Active splitter device and method using diplexed front end |
| 10/18/2007 | WO2007117187A1 A method and apparatus for reducing frequency memory effects in rf power amplifiers |
| 10/18/2007 | WO2007117075A1 Apparatus for eliminating harmonic components in high-efficiency linear power amplifier system using delay elements |
| 10/18/2007 | WO2007117074A1 Pulse area modulation and high-efficiency linear power amplifier system using the same |
| 10/18/2007 | US20070242777 Digital amplifier and television receiving apparatus |
| 10/18/2007 | US20070242742 Digital communication system and method |
| 10/18/2007 | US20070241822 Chain-chopping current mirror and method for stabilizing output currents |
| 10/18/2007 | US20070241820 Drive circuit containing amplifier circuit |
| 10/18/2007 | US20070241819 Low-Offset, Wide Common Mode Range, Cascoded-Gain Single Stage Amplifier |
| 10/18/2007 | US20070241818 Class ab folded cascode stage and method for low noise, low power, low-offset operational amplifier |
| 10/18/2007 | US20070241817 Amplifier and driving circuit using the same |
| 10/18/2007 | US20070241814 Amplifying device and radio communication circuit |
| 10/18/2007 | US20070241813 Amplifier Circuit with Automatic Gain Correction |
| 10/18/2007 | US20070241793 Current feedback amplifiers |
| 10/18/2007 | DE102006032181B3 Power amplifier e.g. power D amplifier, for reproducing sound, has switch with two contacts which are connected with positive and negative terminals of power source, respectively, where another contact is connected to input of summator |
| 10/18/2007 | DE102006017520A1 Modulator input signal producing method for magnetic resonance imaging device, involves adding dither signals to control signal, and producing dither signals based on periodic output of units of discrete dither series of basic form |
| 10/18/2007 | DE102006015983A1 Amplifier for use in integrated circuit arrangement, has current path running between power supplies, complementary pre-coupled transistor pairs formed as metal oxide semiconductor FET, and circuit nodes connected with one of power supplies |
| 10/18/2007 | CA2637228A1 A method and apparatus for reducing frequency memory effects in rf power amplifiers |
| 10/17/2007 | EP1845624A1 Transmission device and wireless communication apparatus |
| 10/17/2007 | EP1845618A1 Clock buffer |
| 10/17/2007 | EP1844547A1 A high dynamic range low-power differential input stage |
| 10/17/2007 | EP1844546A1 Arrangement for amplifying a pwm input signal |
| 10/17/2007 | EP1455446B1 Sensor signal output circuit |
| 10/17/2007 | CN200962580Y Self-surge audio amplifier |
| 10/17/2007 | CN200962579Y D power amplifier circuit capable of improving the power restrain ratio |
| 10/17/2007 | CN101057397A Arrangement for amplifying a PWM input signal |
| 10/17/2007 | CN101057396A Tunable cascode LNA with flat gain response over a wide frequency range |
| 10/17/2007 | CN101057395A Photodiode amplifier |
| 10/17/2007 | CN101057199A Apparatus for filtering a reference voltage and mobile phones comprising such apparatus |
| 10/17/2007 | CN101056093A 可变增益放大器 Variable gain amplifier |
| 10/17/2007 | CN101056092A High speed amplifier with controllable amplifying coefficient and output impedance, and comparator using the same |
| 10/17/2007 | CN101056091A Power amplifier using transmission line transformer |
| 10/17/2007 | CN101056048A A range modulation separation feedback control circuit |
| 10/16/2007 | US7283013 Contactless IC card system |
| 10/16/2007 | US7282998 Method and apparatus for calibrating center frequency of power amplifier |
| 10/16/2007 | US7282997 Thermal coupling device |
| 10/16/2007 | US7282995 Variable gain amplifier |
| 10/16/2007 | US7282994 Active load with adjustable common-mode level |
| 10/16/2007 | US7282993 Frequency characteristics-variable amplifying circuit and semiconductor integrated circuit device |
| 10/16/2007 | US7282992 Class D-amplifier |
| 10/16/2007 | US7282991 On-chip amplifier/line driver compensation circuit |
| 10/16/2007 | US7282980 Precision rectifier circuit for high-density, low-power implantable medical device |
| 10/16/2007 | US7282691 Method for determining wavelengths of light incident on a photodetector |
| 10/16/2007 | US7282689 Optical fiber receiver having an increased bandwidth |
| 10/11/2007 | WO2007114265A1 Analog multiplexer |
| 10/11/2007 | WO2007113736A1 Digital signal converter |
| 10/11/2007 | US20070238424 Apparatus for radio telecommunication system and method of building up output power |
| 10/11/2007 | US20070236296 Apparatus and method for preventing degradation of RF performance due to impedance change of antenna in mobile communication terminal |
| 10/11/2007 | US20070236295 FM Power Amplifier With Antenna Power Control |
| 10/11/2007 | US20070236294 Class L Amplifier |
| 10/11/2007 | US20070236293 High-frequency power amplifier and communication device |
| 10/11/2007 | US20070236291 Class AB source follower |
| 10/11/2007 | US20070236290 Amplifier circuit and gain control method thereof |
| 10/11/2007 | US20070236289 Differential amplifier, digital-to-analog converter and display device |
| 10/11/2007 | US20070236288 Apparatus for amplifying differential signal |
| 10/11/2007 | US20070236287 Switching converter with several converter stages |