| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 05/11/2010 | US7714645 Offset cancellation of a single-ended operational amplifier |
| 05/11/2010 | US7714644 Amplifier circuit |
| 05/11/2010 | CA2508671C Gain compensation over temperature and frequency variations in wireless transceivers |
| 05/11/2010 | CA2373777C Broadcast transmission system with sampling and correction arrangement for correcting distortion |
| 05/11/2010 | CA2286544C Amplification system having mask detection and bias compensation |
| 05/06/2010 | US20100109771 Repeating system and method for cancellation of feedback interference signal with pre-distortion function |
| 05/05/2010 | EP2182641A1 Electronic devices with calibrated radio frequency communications circuitry |
| 05/05/2010 | EP2182631A2 Broadband microwave frequency amplifier cell with variable gain and amplifier comprising such a cell |
| 05/05/2010 | EP2181500A1 Amplifier circuit |
| 05/05/2010 | EP1485993B1 R.f. output power control |
| 05/05/2010 | CN201450487U 双向放大器 Bidirectional amplifier |
| 05/05/2010 | CN1965472B Method and apparatus for DOHERTY amplifier biasing |
| 05/05/2010 | CN1871745B Method and apparatus providing integrated load matching using adaptive power amplifier compensation |
| 05/05/2010 | CN1838529B Bias circuit for amplifying circuit |
| 05/05/2010 | CN1765048B Neutralization of feedback capacitance in amplifiers |
| 05/05/2010 | CN1578122B Offset correct method, offset correct circuit and electronic sound volume device |
| 05/05/2010 | CN1531195B Enlarger controlling system for counting improvement of digital controlling signal resolution ratio |
| 05/05/2010 | CN101702618A Gain control of radio frequency linear power amplifier |
| 05/05/2010 | CN101103524B Power amplifier system |
| 05/05/2010 | CN101088214B Generation of modulated RF signals |
| 05/05/2010 | CN101061633B Model based distortion reduction for power amplifiers |
| 05/05/2010 | CN101036292B Base station, mobile station and radio frequency emitting machien used in wireless network |
| 05/04/2010 | US7711128 System, circuit, and amplifier for reducing pop sound |
| 05/04/2010 | US7710204 Adaptive protection circuit for a power amplifier |
| 05/04/2010 | US7710185 Tuneable circuit for canceling third order modulation |
| 05/04/2010 | US7710166 Semiconductor device and electronic apparatus using the same |
| 04/29/2010 | WO2010048256A1 Headphone amplifier circuit |
| 04/29/2010 | WO2010047991A1 Method and system for amplifying a signal using a transformer matched transistor |
| 04/29/2010 | WO2010047689A1 Amplifier with reduced output transients and method therefor |
| 04/29/2010 | US20100105343 Systems and methods for adjusting headroom of a power amplifier |
| 04/29/2010 | US20100105342 Electronic device with a distortion correction circuit for a power amplifier, and associated methods |
| 04/29/2010 | US20100105338 Predistortion methods and apparatus for transmitter linearization in a communication transceiver |
| 04/29/2010 | US20100102880 Load drive device |
| 04/29/2010 | US20100102879 Method and apparatus for automatically controlling an xnn® enhancement circuitry feeding a power amplifier |
| 04/29/2010 | US20100102878 Physical quantity sensor |
| 04/29/2010 | US20100102845 Proportional Regulation for Optimized Current Sensor Performance |
| 04/28/2010 | EP2180602A1 Method and equipment for controlling power amplification |
| 04/28/2010 | EP2180595A1 High output power amplifier, wireless transmitter, wireless transmitting and receiving device, and high output power amplifier mounting method |
| 04/28/2010 | EP2180594A1 Audio power amplifier |
| 04/28/2010 | EP2179505A1 Low power consumptive mixed mode power amplifier |
| 04/28/2010 | EP1485995B1 Front stage amplifier with different modes |
| 04/28/2010 | CN1926759B Amplifier |
| 04/28/2010 | CN1902816B High-frequency amplifier |
| 04/28/2010 | CN1833358B Doherty amplifier with output mixing coupler |
| 04/28/2010 | CN1759533B Switchable gain amplifier |
| 04/28/2010 | CN1757156B Amplification device |
| 04/28/2010 | CN1714504B Travelling-wave amplifier and amplifying method |
| 04/28/2010 | CN1711679B Improved RF transistor amplifier linearity using suppressed third order transconductance |
| 04/28/2010 | CN1581682B 功率放大器 PA |
| 04/28/2010 | CN1496018B Radio communication device |
| 04/28/2010 | CN101699766A Method for enhancing linearity and efficiency of radio-frequency power amplifier |
| 04/27/2010 | US7706545 Systems and methods for protection of audio amplifier circuits |
| 04/27/2010 | US7706466 Lower complexity layered modulation signal processor |
| 04/27/2010 | US7705820 Liquid crystal display of line-on-glass type |
| 04/27/2010 | US7705670 Wide-range and high-resolution programmable gain amplifier |
| 04/27/2010 | US7705669 Preamplifier and method for calibrating offsets therein |
| 04/22/2010 | WO2010045597A1 Apparatus and method for broadband amplifier linearization |
| 04/22/2010 | WO2010045213A1 Programmable gain amplifier |
| 04/22/2010 | WO2010044346A1 Power amplifier |
| 04/22/2010 | WO2010044178A1 Current detector |
| 04/22/2010 | WO2010043993A1 Amplifier |
| 04/22/2010 | WO2010026560A3 Predistortion unit and method of predistorting signals |
| 04/22/2010 | WO2009046627A8 A method for correcting signals in radio frequency links and the pre-distortion unit thereof |
| 04/22/2010 | US20100097146 Signal amplification circuit |
| 04/22/2010 | US20100097139 Error correction system for a class-d power stage |
| 04/22/2010 | US20100097138 RF Power Transmission, Modulation, and Amplification Embodiments |
| 04/22/2010 | US20100097137 Lookup table generation method and related device for a predistorter |
| 04/22/2010 | DE102008052172A1 Vorrichtung zum Erzeugen eines Korrektursignals An apparatus for generating a correction signal |
| 04/21/2010 | EP2178219A1 A method for broadband matching and a network element thereof |
| 04/21/2010 | EP2178206A2 Feed-forward amplifier with device for creating a correction signal |
| 04/21/2010 | EP2178205A1 Multi-dimensional volterra series transmitter linearization |
| 04/21/2010 | EP2178204A1 Minimum feedback radio architecture with digitally configurable adaptive linearization |
| 04/21/2010 | EP2178203A1 Active antenna element for mobile radio communications |
| 04/21/2010 | EP2178184A1 Protection device for supply circuit with positive and negative double power |
| 04/21/2010 | CN1767374B Low noise amplifier and method for amplifying input signal |
| 04/21/2010 | CN101697479A Adjustable grain low noise amplifier |
| 04/21/2010 | CN101697477A System, method and power amplifier circuit for regulating linearity of output signal of power amplifier circuit |
| 04/21/2010 | CN101247110B Push-pull power amplifier without matching amplifier tube |
| 04/21/2010 | CN101188403B Audio amplification device with adjustable power consumption |
| 04/21/2010 | CN101032079B A/d变换器 A / d converter |
| 04/21/2010 | CN101023578B Distortion compensating amplifier apparatus |
| 04/20/2010 | US7702299 Modulation circuit device, modulation method and radio communication device |
| 04/20/2010 | US7702288 Digital baseband system and process for compensating for analog radio transmitter impairments |
| 04/20/2010 | US7702119 Multi-input gain control circuit |
| 04/20/2010 | US7701295 High-efficiency class-AB amplifier |
| 04/20/2010 | US7701287 Voltage detection type overcurrent protection device for class-D amplifier |
| 04/20/2010 | US7701285 Power amplifiers having improved startup linearization and related operating methods |
| 04/20/2010 | US7701284 Line driver capable of automatically adjusting output impedance |
| 04/20/2010 | US7701282 Offset canceling circuit and offset canceling method |
| 04/20/2010 | US7701280 Semiconductor integrated circuit device |
| 04/20/2010 | US7701009 Source follower circuit or bootstrap circuit, driver circuit comprising such circuit, and display device comprising such driver circuit |
| 04/15/2010 | WO2010041181A1 Switching mode out-phasing amplifier |
| 04/15/2010 | US20100093290 Multi-dimensional volterra series transmitter linearization |
| 04/15/2010 | US20100090767 Rf amplification device |
| 04/15/2010 | US20100090763 Automatic gain control circuit |
| 04/15/2010 | US20100090762 Minimum feedback radio architecture with digitally configurable adaptive linearization |
| 04/15/2010 | DE102004044114B4 Videoeingangsschutzschaltung zum Schutz gegen Kurzschluss zur Batterie unter Beibehaltung eines Abschlusswiderstands Video input protection circuit for protection against short circuit to the battery while maintaining a terminating resistor |
| 04/14/2010 | EP2175555A1 Distortion compensating apparatus and method |
| 04/14/2010 | CN201438690U Circuit for reducing noise coefficient of amplifier |
| 04/14/2010 | CN201438689U High and low power combining circuit for RF power amplifier |