| 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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| 03/30/2005 | EP1518321A1 Improved power amplifier configuration |
| 03/30/2005 | EP1518320A1 Efficient generation of radio frequency currents |
| 03/30/2005 | EP1206833A4 Integrated tunable high efficiency power amplifier |
| 03/30/2005 | CN1601929A Receiving circuit for free-space optical communication |
| 03/30/2005 | CN1601919A Receiver including linearity compensation in the receive band |
| 03/30/2005 | CN1601908A Cyclic analog-to-digital converters |
| 03/30/2005 | CN1601907A Pipelined and cyclic analog-to-digital converters |
| 03/30/2005 | CN1601892A Distortion-compensated amplifier using predistortion technique |
| 03/29/2005 | US6873832 Timing based LNA gain adjustment in an RF receiver to compensate for intermodulation interference |
| 03/29/2005 | US6873830 Bias circuit and radio communication apparatus using same |
| 03/29/2005 | US6873211 Multi-mode bias circuit for power amplifiers |
| 03/29/2005 | US6873208 High-frequency amplifier |
| 03/29/2005 | US6873207 Power amplification circuit and communication device using the same |
| 03/24/2005 | WO2005027342A1 Power amplifier with improved linearity and efficiency |
| 03/24/2005 | WO2005027340A1 Distortion compensating amplifier apparatus |
| 03/24/2005 | WO2005027297A2 Hybrid switched mode/linear power amplifier power supply for use in polar transmitter |
| 03/24/2005 | WO2005027188A2 Quiescent current control circuit for high-power amplifiers |
| 03/24/2005 | WO2005011108A3 Low-power high-psrr current-mode microphone pre-amplifier system and method |
| 03/24/2005 | WO2005002044B1 Integrated power amplifier circuit |
| 03/24/2005 | WO2004107563A3 High-efficiency amplifier, converter and methods |
| 03/24/2005 | US20050066368 Receiver including linearity compensation in the receive band |
| 03/24/2005 | US20050064830 Hybrid switched mode/linear power amplifier power supply for use in polar transmitter |
| 03/24/2005 | US20050062545 Two-stage amplifier with series L-R coupling network |
| 03/24/2005 | US20050062544 Integrated circuit and optical pickup device |
| 03/24/2005 | US20050062543 Optical dispersion correction in transimpedance amplifiers |
| 03/24/2005 | US20050062542 Fast-response current limiting |
| 03/24/2005 | US20050062541 Bias circuit |
| 03/24/2005 | US20050062540 Amplifier and frequency converter |
| 03/24/2005 | US20050062538 RF power amplifier having an operating current measuring device |
| 03/24/2005 | US20050062537 Amplifier arrangement |
| 03/24/2005 | US20050062535 Impedance matched low noise amplifier |
| 03/24/2005 | US20050062534 High-frequency power amplifier having differential inputs |
| 03/24/2005 | US20050062533 Coupled-inductance differential amplifier |
| 03/24/2005 | US20050062532 Method for aligning feed forward loops |
| 03/24/2005 | US20050062531 Digital predistortion for power amplifier |
| 03/24/2005 | US20050062529 Adaptive wideband digital amplifier for linearly modulated signal amplification and transmission |
| 03/24/2005 | US20050062528 High-power amplification circuit |
| 03/24/2005 | US20050062526 High-efficiency amplifier, converter and methods |
| 03/24/2005 | US20050062524 Transconductance-adjusting circuit |
| 03/24/2005 | US20050061954 Receiving circuit for free-space optical communication |
| 03/24/2005 | DE10317805B4 Schaltungsanordnung zur Offsetkompensation in breitbandigen Hochfrequenzdetektoren und -verstärkern Circuit arrangement for offset compensation in broadband high-frequency detectors and amplifiers |
| 03/24/2005 | DE10011056B4 Leseverstärker für magnetisches Speichersystem Sense amplifiers for magnetic storage system |
| 03/23/2005 | EP1517439A1 Transistor amplifier |
| 03/23/2005 | EP1517437A1 RF power amplifier with operating current measuring circuitry |
| 03/23/2005 | EP1131883A4 Rf power amplifier linearization using parallel rf power amplifiers having intermod-complementing predistortion paths |
| 03/23/2005 | CN2687948Y Audio power output circuit for amplifying circuit |
| 03/23/2005 | CN1599975A Differential amplifier with temp compensation function |
| 03/23/2005 | CN1599974A Integrated circuit with an amplifier |
| 03/23/2005 | CN1599240A RF power amplifier with operating current measuring circuitry |
| 03/23/2005 | CN1599238A Bias circuit of power amplifier |
| 03/23/2005 | CN1599237A Small two-way module |
| 03/23/2005 | CN1599236A 集成电路和光拾波装置 Integrated circuits and optical pick-up apparatus |
| 03/22/2005 | US6871165 Method and apparatus for classifying time series data using wavelet based approach |
| 03/22/2005 | US6870658 Energy limiter for amplitude modulated RF waveforms |
| 03/22/2005 | US6870427 Process and device for controlling the operation of a bipolar transistor in class A |
| 03/22/2005 | US6870426 Output stage, amplifier and associated method for limiting an amplifier output |
| 03/22/2005 | US6870421 Temperature characteristic compensation apparatus |
| 03/22/2005 | CA2342155C Linear traveling wave tube amplifier utilizing input drive limiter for optimization |
| 03/17/2005 | WO2005025055A1 Transistor arrangement, integrated circuit and method for operating field effect transistors |
| 03/17/2005 | WO2005025053A2 Dual mode multi-slot egprs transmitter |
| 03/17/2005 | WO2003001659A3 Intermodulation product cancellation circuit |
| 03/17/2005 | US20050059373 Frequency generator and communication system using the same |
| 03/17/2005 | US20050059362 Method and apparatus providing integrated load matching using adaptive power amplifier compensation |
| 03/17/2005 | US20050058220 Adaptive control apparatus |
| 03/17/2005 | US20050057874 Video protection circuit providing short to battery protection while maintaining termination impedance |
| 03/17/2005 | US20050057414 Reconfigurable radiation desensitivity bracket systems and methods |
| 03/17/2005 | US20050057310 Monolithic array amplifier with periodic bias-line bypassing structure and method |
| 03/17/2005 | US20050057309 Transistor amplifier |
| 03/17/2005 | US20050057308 Method and apparatus for dynamically regulating the supply voltage of a power amplifier |
| 03/17/2005 | US20050057306 Step gain-variable CMOS amplifier |
| 03/17/2005 | US20050057305 Radio frequency low noise amplifier with automatic gain control |
| 03/17/2005 | US20050057304 Single-ended input, differential output low noise amplifier |
| 03/17/2005 | US20050057303 Table-based pre-distortion for amplifier systems |
| 03/17/2005 | DE10337829A1 Vorrichtung und Verfahren zur Begrenzung der Fehlanpassung von Endstufen Apparatus and method for limiting the mismatch of power amplifiers |
| 03/17/2005 | DE10336881A1 Hochfrequenzanregungsanordnung mit einer Begrenzungsschaltung High-frequency excitation system with a limiting circuit |
| 03/17/2005 | DE10118117B4 Meßvorrichtung, Signalausgabeverfahren und Speichermedium Measuring device, signal output method and storage medium |
| 03/16/2005 | EP1515434A1 High-frequency amplifier |
| 03/16/2005 | EP1515431A1 Step gain-variable CMOS amplifier |
| 03/16/2005 | EP1514285A1 Electronic device and method of matching the impedance thereof |
| 03/16/2005 | EP1277275A4 Ft-multiplier amplifier with low-power biasing circuit |
| 03/16/2005 | CN1596508A Method for avoiding interference radiation of am transmitters used in digital transmission |
| 03/16/2005 | CN1596474A Circuit for generating a reference voltage having low temperature dependency |
| 03/16/2005 | CN1595796A Differential amplifier, data driver and display device |
| 03/16/2005 | CN1595795A 半导体集成电路器件 The semiconductor integrated circuit device |
| 03/16/2005 | CN1595794A Predistorter for phase modulated signals with low peak to average ratios |
| 03/16/2005 | CN1193499C Circuit arrangement for adjusting operating point of high-frequency transistor and amplifier circuit |
| 03/16/2005 | CN1193498C Radio frequency amplifier with reduced intermodulation distortion |
| 03/15/2005 | US6867744 Tunable horn antenna |
| 03/15/2005 | US6867722 H-bridge common-mode noise reduction circuit |
| 03/15/2005 | US6867652 Fast-response current limiting |
| 03/15/2005 | US6867650 Variable gain amplifier circuit |
| 03/15/2005 | US6867649 Common-mode and differential-mode compensation for operational amplifier circuits |
| 03/15/2005 | US6867648 Linearization apparatus capable of adjusting peak-to-average power ratio |
| 03/15/2005 | US6867647 Operational amplifier arrangement including a quiescent current control circuit |
| 03/15/2005 | US6867636 Circuit arrangement for a current-controlled resistor having an enlarged linear range |
| 03/15/2005 | US6867633 Complementary electronic system for lowering electric power consumption |
| 03/15/2005 | US6867623 Receiving circuit |
| 03/15/2005 | US6867574 Switch mode power supply and driving method for efficient RF amplification |
| 03/10/2005 | WO2005022740A2 Method and apparatus providing integrated load matching using adaptive power amplifier compensation |
| 03/10/2005 | US20050054382 Methods and devices for controlling RF, multi-carrier amplifier signal power |