| 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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| 05/02/2006 | US7038535 PWM digital amplifier with high-order loop filter |
| 05/02/2006 | US7038501 Transconductor circuit for compensating the distortion of output current |
| 05/02/2006 | US7038498 Input/output circuit, reference-voltage generating circuit, and semiconductor integrated circuit |
| 04/27/2006 | WO2006043140A1 Method and apparatus for maintaining constant linearity for a power amplifier over varying load conditions |
| 04/27/2006 | WO2006042888A1 Method of producing a switched-capacitor amplifier insensitive to capacitor ratio and amplifier offset |
| 04/27/2006 | WO2006042684A1 Control circuit for controlling the current and/or voltage of an electronic circuit |
| 04/27/2006 | WO2006018784A3 High accuracy power detector for handset applications |
| 04/27/2006 | WO2005078921A3 Radio frequency low noise amplifier with automatic gain control |
| 04/27/2006 | US20060087378 Preamplifier circuit having a variable feedback resistance |
| 04/27/2006 | US20060087377 Amplifier bias circuit, method for biasing an amplifier and integrated circuit comprising an amplifier bias circuit |
| 04/27/2006 | US20060087374 Feed forward amplifier employing bias circuit topologies for minimization of RF amplifier memory effects |
| 04/27/2006 | US20060087370 Charge amplifier |
| 04/27/2006 | DE112004001202T5 FET-Verstärker, Pulsmodulationsmodul und Radarvorrichtung FET amplifier, pulse modulation module and radar apparatus |
| 04/26/2006 | EP1650864A1 Amplification apparatus |
| 04/26/2006 | EP1649594A1 Amplifying circuit comprising an envelope modulated limit cycles modulator circuit |
| 04/26/2006 | EP1250751B1 Electronic circuit |
| 04/26/2006 | EP1118176A4 In-line predistorter for linearization of electronic and optical signals |
| 04/26/2006 | CN2775936Y L wave band 60 db low noise amplifier for mobile communication |
| 04/26/2006 | CN2775678Y Solid state power amplifying and protective device for radar |
| 04/26/2006 | CN1765048A Neutralization of feedback capacitance in amplifiers |
| 04/26/2006 | CN1764063A D sort audio power amplifier |
| 04/26/2006 | CN1764062A DC excursion correcting device |
| 04/26/2006 | CN1254007C Suppression circuit of high speed high frequency operation |
| 04/25/2006 | US7035600 Digitally adaptive modulated transmitter |
| 04/25/2006 | US7035345 Adaptive predistortion device and method using digital receiver |
| 04/25/2006 | US7035312 Pilot signal cycling technique for a control system that reduces distortion produced by electrical circuits |
| 04/25/2006 | US7035069 Semiconductor integrated circuit device |
| 04/25/2006 | US7034636 Tunable filters having variable bandwidth and variable delay |
| 04/25/2006 | US7034620 RF power amplifier employing bias circuit topologies for minimization of RF amplifier memory effects |
| 04/25/2006 | US7034619 Monolithic array amplifier with periodic bias-line bypassing structure and method |
| 04/25/2006 | US7034617 Semiconductor integrated circuit for high frequency power amplifier, electronic component for high frequency power amplifier, and radio communication system |
| 04/25/2006 | US7034616 Operational amplification circuit, overheat detecting circuit and comparison circuit |
| 04/25/2006 | US7034614 Modified polar amplifier architecture |
| 04/25/2006 | US7034613 Adaptive predistortion for transmit system with gain, phase and delay adjustments |
| 04/25/2006 | US7034612 Apparatus and method for compensating pre-distortion of a power amplifier |
| 04/25/2006 | US7034611 Multistage common mode feedback for improved linearity line drivers |
| 04/25/2006 | US7034610 Apparatus, system, and method for amplifying a signal, and applications thereof |
| 04/25/2006 | US7034608 Correcting DC offsets in a multi-stage amplifier |
| 04/25/2006 | US7034568 Logic circuit |
| 04/20/2006 | WO2006040935A1 Operational amplifier |
| 04/20/2006 | US20060083330 Distortion compensation table creation method and distortion compensation method |
| 04/20/2006 | US20060082413 LMS-based adaptive pre-distortion for enhanced power amplifier efficiency |
| 04/20/2006 | DE10031522B4 Frequenzkompensierte Verstärkeranordnung und Verfahren zum Betrieb einer frequenzkompensierten Verstärkeranordnung Frequency compensated amplifier arrangement and method for operating a frequency compensated amplifier arrangement |
| 04/19/2006 | EP1647091A2 Low-consumption voltage amplifier |
| 04/19/2006 | EP1647090A2 A low-power wide dynamic range envelope detector system and method |
| 04/19/2006 | EP1437023B1 Amplifier power detection circuitry |
| 04/19/2006 | EP1419597B1 Method and device for enhancing quality of signal transmission |
| 04/19/2006 | EP1177619B1 Signal treating circuit with a class a/b output stage connectable to a source of multiple supply voltages |
| 04/19/2006 | CN1762097A Matching circuit |
| 04/19/2006 | CN1762094A Low distortsion class-d amplifier using carrier reference signal symmetry modulation |
| 04/19/2006 | CN1762093A Circuit arrangement and transistor control method |
| 04/19/2006 | CN1252931C Input/output buffer |
| 04/19/2006 | CN1252913C Power amplifier circuit |
| 04/19/2006 | CN1252912C Low-Voltage high-linearity radio-frequency amplifier for on-chip impedance match |
| 04/19/2006 | CN1252911C Error correction device and error correction method |
| 04/19/2006 | CN1252910C Communications systems |
| 04/19/2006 | CN1252480C Amplifier circuit for low voltage current detection |
| 04/18/2006 | US7031691 Low-noise amplifier circuit and a method for amplifying low-power signals in a low-noise manner |
| 04/18/2006 | US7031457 Programmable peak detector for use with zero-overhead Class G line drivers |
| 04/18/2006 | US7030865 Operational amplifier circuit, driving circuit and driving method |
| 04/18/2006 | US7030714 Method and apparatus to match output impedance of combined outphasing power amplifiers |
| 04/18/2006 | US7030702 Optical receiver with wide dynamic range transimpedance amplifier |
| 04/18/2006 | US7030701 Transimpedance amplification apparatus with source follower structure |
| 04/18/2006 | US7030700 Voltage level detector for power amplifier protection control |
| 04/18/2006 | US7030694 Switched mode power amplifier |
| 04/18/2006 | US7030693 Enhanced predistortion method and apparatus |
| 04/18/2006 | US7030691 Power amplifier |
| 04/18/2006 | US7030690 Operational amplifier with selectable performance characteristics |
| 04/13/2006 | WO2006038189A1 Dual bias control circuit |
| 04/13/2006 | WO2006016964A3 Digital transmitter system employing self-generating predistortion parameter lists and adaptive controller |
| 04/13/2006 | WO2005027297A3 Hybrid switched mode/linear power amplifier power supply for use in polar transmitter |
| 04/13/2006 | WO2005022740A3 Method and apparatus providing integrated load matching using adaptive power amplifier compensation |
| 04/13/2006 | US20060077760 Sonar transmitter |
| 04/13/2006 | US20060077006 Delay mismatched feed forward amplifier system using penalties and floors for control |
| 04/13/2006 | US20060077004 Low-distortion differential circuit |
| 04/13/2006 | US20060077003 Dc offset calibration apparatus |
| 04/13/2006 | DE10117563B4 Verfahren zur Verstärkung eines amplituden- und/oder phasenmodulierten Hochfrequenzsignals nach dem Prinzip des Envelope Elimination und Restoration und Schaltungsanordnung A method for amplifying an amplitude and / or phase-modulated radio frequency signal according to the principle of the Envelope Elimination and Restoration, and the circuit arrangement |
| 04/12/2006 | EP1646153A1 Activation signal output circuit |
| 04/12/2006 | EP1645094A2 Digital predistortion system and method for correcting memory effects within an rf power amplifier |
| 04/12/2006 | EP1645030A1 Distortion/efficiency adaptation in a variable-data-rate radio transmitter |
| 04/12/2006 | EP1645028A1 Adaptive predistortion for a transmit system |
| 04/12/2006 | EP1325555A4 Configurable power amplifier and bias control |
| 04/12/2006 | EP1179255B1 Transmitter for transmitting signals over radio channels and method for transmitting signals over radio channels |
| 04/12/2006 | CN1759533A Switchable gain amplifier |
| 04/12/2006 | CN1759532A High efficiency amplification |
| 04/12/2006 | CN1758545A 通信终端 Communication terminal |
| 04/12/2006 | CN1758531A Amplifier having switchable negative feedback |
| 04/12/2006 | CN1758443A High voltage operating field effect transistor, and bias circuit therefor and high voltage circuit thereof |
| 04/12/2006 | CN1251400C Operation amplifier with deviation offset function |
| 04/12/2006 | CN1251399C Feedforward amplifying device for compensating non-linear distortion |
| 04/11/2006 | US7027962 System and method for self-configuring and self-optimizing filters |
| 04/11/2006 | US7027945 Method of self-calibration of pulse rise and fall times |
| 04/11/2006 | US7027789 Self-tuned millimeter wave RF transceiver module |
| 04/11/2006 | US7027027 Differential amplifier and semiconductor integrated circuit for LCD drive |
| 04/11/2006 | US7026873 LMS-based adaptive pre-distortion for enhanced power amplifier efficiency |
| 04/11/2006 | US7026872 Adaptive predistortion for a transmit system with gain, phase and delay adjustments |
| 04/11/2006 | US7026871 Adaptive predistortion for a transmit system |
| 04/11/2006 | US7026870 Low-noise active RC signal processing circuit |
| 04/11/2006 | US7026868 Variable supply amplifier system |
| 04/11/2006 | US7026867 Floating input amplifier for capacitively coupled communication |