| 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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| 08/30/2001 | WO2001063792A2 Apparatus for linear transmitter with improved loop gain stabilization |
| 08/30/2001 | WO2001063791A2 Transmitter and receiver circuit |
| 08/30/2001 | WO2001063756A1 A signal combiner, a signal splitter and a circuit using a combiner and a splitter |
| 08/30/2001 | WO2001063753A1 An analog reflective predistorter for power amplifiers |
| 08/30/2001 | WO2001063752A1 System for pre-distorting an input signal for a power amplifier using non-orthogonal coordinates |
| 08/30/2001 | WO2001063751A1 System for estimating a non-linear characteristic of an amplifier |
| 08/30/2001 | WO2001063750A1 System for reducing adjacent-channel interference by pre-linearization and pre-distortion |
| 08/30/2001 | WO2001063749A1 Signal treating circuit with a class a/b output stage connectable to a source of multiple supply voltages |
| 08/30/2001 | WO2001063748A1 Spectral distortion monitor for controlling pre-distortion and feed-forward linearization of rf power amplifier |
| 08/30/2001 | WO2001063745A2 Modulator of phase and amplitude |
| 08/30/2001 | WO2001063744A2 Phasen- und frequenzmodulator |
| 08/30/2001 | WO2001026416A3 High performance audio transmission channel |
| 08/30/2001 | US20010017576 Isolator device with built-in power amplifier |
| 08/30/2001 | US20010017571 System and method for converting from single- ended to differential signals |
| 08/30/2001 | US20010017570 Strain compensation amplifier |
| 08/30/2001 | US20010017567 Internal voltage generation circuit |
| 08/30/2001 | DE10009596A1 Vorrichtung zur Linearisierung eines Hochfrequenz-Verstärkers Apparatus for linearization of an RF amplifier |
| 08/29/2001 | EP1128549A2 Detection of a DC offset in an automotive audio system |
| 08/29/2001 | EP1128548A2 FET bias circuit |
| 08/29/2001 | EP1127408A1 Variable gain amplifier with improved linearity |
| 08/29/2001 | EP1127407A1 An amplifier for use in a mobile phone |
| 08/29/2001 | EP1127406A1 High efficiency power amplifier |
| 08/29/2001 | EP0944955B1 A protective circuit |
| 08/29/2001 | EP0613597B1 Shunt-expansive predistortion linearizers for optical analog transmitters |
| 08/29/2001 | CN1310880A Method and apparatus for modulating digital data |
| 08/29/2001 | CN1310516A 功率放大器 PA |
| 08/29/2001 | CN1310515A Terminal structure for high-speed high-pin density chip |
| 08/28/2001 | US6281936 Broadcast transmission system with sampling and correction arrangement for correcting distortion caused by amplifying and signal conditioning components |
| 08/28/2001 | US6281755 High-frequency power amplifier |
| 08/28/2001 | US6281754 Amplifier circuit |
| 08/28/2001 | US6281752 Amplifier with improved, high precision, high speed and low power consumption architecture |
| 08/28/2001 | US6281751 Frequency compensation for single-ended class AB operational amplifiers with fully-differential input stages |
| 08/28/2001 | US6281750 Transistor amplifier |
| 08/28/2001 | US6281747 Power efficient line driver |
| 08/23/2001 | WO2001061865A1 Current-to-voltage converter with controllable gain, and signal processing circuit comprising such converter |
| 08/23/2001 | WO2001061842A1 Variable transconductance variable gain amplifier utilizing a degenerated differential pair |
| 08/23/2001 | WO2001061841A1 Distortion detection for a power amplifier |
| 08/23/2001 | US20010015881 Semiconductor integrated circuit device |
| 08/23/2001 | US20010015674 Semiconductor integrated circuit device |
| 08/23/2001 | US20010015673 Feed-forward amplifier and controller of the same |
| 08/23/2001 | US20010015668 Fet bias circuit |
| 08/23/2001 | DE19962341C1 Sender zum Versenden von Signalen über Funkkanäle und Verfahren zum Senden von Signalen über Funkkanäle Transmitter for sending signals through radio channels and method for transmitting signals via radio channels |
| 08/22/2001 | EP1126597A2 Method of detecting a predetermined DC Offset in an automotive audio system |
| 08/22/2001 | EP1126596A1 Feedforward amplifier |
| 08/22/2001 | EP1126595A1 Power amplifier |
| 08/22/2001 | EP1126594A2 Compensation for electrical circuitry |
| 08/22/2001 | EP1125367A2 Radio frequency transmitters |
| 08/22/2001 | EP1125362A1 Linear transconductance circuits having class ab amplifiers parallel coupled with concave compensation circuits |
| 08/22/2001 | EP1125361A1 Amplifier circuitry |
| 08/22/2001 | EP0787381B1 Class-BC power amplifier for AM-FM transmitter |
| 08/22/2001 | CN1309831A Amplifier output stage |
| 08/22/2001 | CN1309465A Method and apparatus for adaptive adjusting feedforward linearized amplifier |
| 08/21/2001 | US6278743 Non linear amplitude precorrection for HDTV transmitter |
| 08/21/2001 | US6278329 Low-noise amplifier stage with matching network |
| 08/21/2001 | US6278328 Power amplifier |
| 08/21/2001 | US6278313 Semiconductor circuit in which distortion caused by changes in ambient temperature is compensated |
| 08/21/2001 | US6278299 Voltage to current converter |
| 08/16/2001 | WO2001059928A1 Balanced circuit arrangement |
| 08/16/2001 | WO2001059927A1 Multistage amplifier |
| 08/16/2001 | WO2001059925A1 Low-voltage transconductance amplifier/filters |
| 08/16/2001 | WO2001059924A1 Power booster method and apparatus for improving the performance of radio frequency linear power amplifiers |
| 08/16/2001 | WO2001059923A2 Amplifier arrangement |
| 08/16/2001 | US20010014593 High-efficiency modulating rf amplifier |
| 08/16/2001 | US20010014592 Transmitter |
| 08/16/2001 | US20010013851 Display driving apparatus having variable driving ability |
| 08/16/2001 | US20010013811 Grounded emitter amplifier and a radio communication device using the same |
| 08/16/2001 | US20010013809 Predistortion circuit and power amplifier |
| 08/16/2001 | US20010013808 Mute circuit and digital audio amplifier circuit |
| 08/16/2001 | US20010013794 Buffer circuit |
| 08/16/2001 | EP1124325A2 High frequency push-pull amplifier |
| 08/16/2001 | EP1124324A1 Method for linearizing, over a wide frequency band, a transmission system comprising a power amplifier |
| 08/16/2001 | EP0764362B1 Linear microwave power amplifier with supply power injection controlled by the modulation envelope |
| 08/16/2001 | DE10005805A1 High frequency push-pull amplifier has first transforming balancing transformer with low permeability ferrite core at symmetrical output, second transformer with high permeability core |
| 08/15/2001 | CN1308788A Semiconductor amplifier circuit and system |
| 08/15/2001 | CN1308473A Method of linearizing transmission chain including power amplifier in wide frequency band |
| 08/14/2001 | US6275685 Linear amplifier arrangement |
| 08/14/2001 | US6275113 High frequency tuning amplifier for buffer |
| 08/14/2001 | US6275112 Efficient microphone bias amplifier with high output voltage/current capability and excellent PSRR |
| 08/14/2001 | US6275108 Circuit and method for control of amplifier operating angle |
| 08/14/2001 | US6275106 Spectral distortion monitor for controlling pre-distortion and feed-forward linearization of rf power amplifier |
| 08/14/2001 | US6275105 Adaptive linearization of a feedforward amplifier by complex gain stabilization of the error amplifier |
| 08/14/2001 | US6275104 Multistage amplifier with local error correction |
| 08/14/2001 | US6275103 Predistorter of amplifier and amplifying unit |
| 08/14/2001 | US6275102 Distortion correction loop for amplifier circuits |
| 08/14/2001 | CA2257954C Power delivery system and method of controlling the power delivery system for use in a radio frequency system |
| 08/14/2001 | CA2254456C A modularly-partitioned feedforward multi-linear rf power amplifier |
| 08/09/2001 | WO2001058026A2 Super-linear multi-carrier power amplifier |
| 08/09/2001 | WO2001058012A2 High-efficiency power modulators |
| 08/09/2001 | WO2001058011A2 Adaptive controller |
| 08/09/2001 | WO2001058009A2 Large signal amplifier gain compensation circuit |
| 08/09/2001 | WO2001058008A2 Distortion reduction |
| 08/09/2001 | US20010011926 Multiple-band amplifier |
| 08/09/2001 | US20010011923 Circuit, including feedback, for reducing DC-offset and noise produced by an amplifier |
| 08/09/2001 | US20010011911 Input buffer circuit for semiconductor device |
| 08/09/2001 | DE10005440A1 Verfahren zum energiesparenden Betrieb eines Mobilfunkgerätes und Mobilfunkgerät A method for energy-saving operation of a mobile device and mobile device |
| 08/09/2001 | DE10002371A1 Verstärkerschaltung Amplifier circuit |
| 08/08/2001 | EP1122923A2 Line driver with transformer coupling and impedance control |
| 08/08/2001 | EP1122883A2 Circuit for linearizing the power control profile of a BiCMOS power amplifier |
| 08/08/2001 | EP1122882A2 Amplifier circuit |
| 08/08/2001 | EP0944953B1 Intermodulation compensation in multi-channel amplifiers |