| 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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| 09/25/2013 | EP2642660A2 Linearization circuit and related techniques |
| 09/25/2013 | EP2641371A1 Method and frequency agile pre-distorted transmitter using programmable digital up and down conversion |
| 09/25/2013 | EP2641327A1 Non-linear model with tap output normalization |
| 09/25/2013 | EP2641326A1 Configurable basis-function generation for nonlinear modeling |
| 09/25/2013 | EP2641325A1 Orthogonal basis function set for ditigal predistorter |
| 09/25/2013 | EP2641324A1 Joint process estimator with variable tap delay line for use in power amplifier digital predistortion |
| 09/25/2013 | CN203219247U Multi-shaft servo amplifier for hydraulic mechanical arm |
| 09/25/2013 | CN203219246U X-waveband amplitude limiting low-noise amplifier |
| 09/25/2013 | CN103329433A Output-mode switching amplifier |
| 09/25/2013 | CN103329430A Cancelation of gain change due to amplifier self-heating |
| 09/25/2013 | CN103329429A Apparatus and method for miller compensation for multi-stage amplifier |
| 09/25/2013 | CN103326681A Amplifier for output buffer, signal processing apparatus and amplifier circuit |
| 09/25/2013 | CN103326680A Class D audio power amplifier and audio signal processing method thereof |
| 09/25/2013 | CN103326676A 功率放大器 PA |
| 09/25/2013 | CN103326674A Method and device for protecting power amplifier |
| 09/25/2013 | CN103326673A Folded cascode amplifier with enhanced slew rate |
| 09/25/2013 | CN103326672A Broadband low noise amplifier employing Chebyshev band-pass filter |
| 09/25/2013 | CN103326671A Wideband efficient Doherty power amplifier suitable for low frequency range |
| 09/25/2013 | CN103326670A 输出级电路 The output stage circuit |
| 09/25/2013 | CN101945316B Startup and shutdown automatic mute circuit of embedded type audio-video equipment |
| 09/24/2013 | US8543357 RF power density and field characterization technique |
| 09/24/2013 | US8542062 Adaptive digital pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications |
| 09/19/2013 | WO2013136860A1 Transmission apparatus and transmission method |
| 09/19/2013 | WO2013136649A1 Wireless communication apparatus |
| 09/19/2013 | WO2013136226A1 Architecture and the training method of a pa dpd system with space mapping applied in the predistorter |
| 09/19/2013 | WO2013136206A1 Look up table-based sum predistorter for power amplifification with concurrent dual band inputs |
| 09/19/2013 | US20130244606 Signal converting apparatus and receiving apparatus for supporting concurrent dual bands in wireless communication system |
| 09/19/2013 | US20130243122 Architecture and the training method of a pa dpd system with space mapping applied in the predistorter |
| 09/19/2013 | US20130241669 Adjustable duplexer system |
| 09/19/2013 | US20130241646 Dual Loop Adaptation Digital Predistortion Architecture for Power Amplifiers |
| 09/19/2013 | US20130241645 Multi-layer memory structure for behavioral modeling in a pre-distorter |
| 09/19/2013 | DE102013102578A1 Breitband-Doherty-Verstärkerschaltung mit Spitzenimpedanzabsorption High-Doherty amplifier circuit with impedance peak absorption |
| 09/19/2013 | DE102012005488A1 Composite-operational amplifier e.g. single-step difference trans-conductance amplifier, has connector formed as amplifier's inverted input, and main-forward signal path whose input is connected with output of auxiliary-forward signal path |
| 09/18/2013 | EP2211461B1 Power amplifier circuit, and transmitter and wireless communication device using the same |
| 09/18/2013 | CN203206182U Simple-proportion plug-type amplifier |
| 09/18/2013 | CN103314528A Impedance -matching circuits for multi - output power supplies driving C02 gas -discharge lasers |
| 09/18/2013 | CN103314527A Circuit and method for reducing input leakage in chopped amplifier during overload conditions |
| 09/18/2013 | CN103314526A Self-biasing radio frequency circuitry |
| 09/18/2013 | CN103314524A Dutycycle adjustment to improve efficiency of a digital RF-PA |
| 09/18/2013 | CN103314523A Systems and methods for digital predistortion in a dual band transmitter |
| 09/18/2013 | CN103313167A Android system based energy-saving control method for audio power amplifier |
| 09/18/2013 | CN103312276A Power overshoot protection circuit for digital television power amplifier |
| 09/18/2013 | CN103312275A Hybrid pre-distortion linearizer |
| 09/18/2013 | CN103312274A Digital control method for feedforward amplifier and digitalized feedforward amplifier |
| 09/18/2013 | CN103312273A Circuit device for inhibiting temperature effect of LDMOS (laterally diffused metal oxide semiconductor) power amplifier |
| 09/18/2013 | CN103312272A Multi-mode doherty power amplifier |
| 09/18/2013 | CN103312271A Amplification apparatus |
| 09/18/2013 | CN103312270A Power amplifier |
| 09/18/2013 | CN103307336A Digital amplifier for electro-hydraulic proportional valve |
| 09/18/2013 | CN102394570B Monolithic integrated narrow pulse peak holding circuit |
| 09/18/2013 | CN102067444B Improved filter for switched mode power supply |
| 09/18/2013 | CN101997491B Wireless apparatus and signal processing method |
| 09/18/2013 | CN101764580B Adaptive bias circuit for controlling operation of amplifier and power amplifier system |
| 09/17/2013 | US8536943 Selective narrowband feedback for a digital predistorter |
| 09/12/2013 | WO2013133215A1 Doherty amplifier circuit |
| 09/12/2013 | WO2013133170A1 Transmission device |
| 09/12/2013 | WO2013131370A1 Electronic device and method for increasing output power of electronic device |
| 09/12/2013 | WO2013131302A1 Multi-stage multi-path doherty amplifier |
| 09/12/2013 | WO2013109467A3 Method and apparatus for resource block based transmitter optimization in wireless communication devices |
| 09/12/2013 | WO2013023192A3 Canceling third order non-linearity in current mirror-based circuits |
| 09/12/2013 | DE102013200040A1 Verstärker und Verstärkungsverfahren Amplifier and amplification method |
| 09/11/2013 | EP2637307A1 Mute drive circuit |
| 09/11/2013 | EP2637303A2 Amplification apparatus |
| 09/11/2013 | EP2637302A1 Microwave semiconductor amplifier |
| 09/11/2013 | EP2637301A1 Circuit, communication device and method for protecting power amplifier |
| 09/11/2013 | EP2636151A1 Matching network for transmission circuitry |
| 09/11/2013 | CN203193575U High-efficiency power amplifier based on mobile communication system |
| 09/11/2013 | CN203193574U Power amplifier with digital pre-distortion compensation combination cancellation function |
| 09/11/2013 | CN203193572U Low-voltage driving integrated amplifier for automobile control circuit |
| 09/11/2013 | CN203193571U Same-position distortion bucking circuit |
| 09/11/2013 | CN203193570U Amplifying circuit with self-adaption combined circuit cancellation function |
| 09/11/2013 | CN103299593A Method and frequency agile pre-distorted transmitter using programmable digital up and down conversion |
| 09/11/2013 | CN103299542A Orthogonal basis function set for ditigal predistorter |
| 09/11/2013 | CN103297894A Earphone power amplifier, working method and mobile terminal equipment |
| 09/11/2013 | CN103296980A 放大器 Amplifiers |
| 09/11/2013 | CN103296979A Dielectric-free high-frequency extensible-broadband high-performance waveguide amplifier |
| 09/11/2013 | CN103296978A Digital predistortion method and device |
| 09/11/2013 | CN103296977A Monotonic conversion of RF power amplifier calibration data |
| 09/11/2013 | CN103296976A Method, device and magnetic resonance equipment for stabilizing quiescent operating points of radio-frequency amplifiers |
| 09/11/2013 | CN103296975A Operational amplifier with multiple power domains and voltage generator using same |
| 09/11/2013 | CN103296974A Self-calibration buffer amplifier in voice coil motor driver and resistor trimming network |
| 09/11/2013 | CN103294297A Signal processing and pre-amplification circuit and touch screen |
| 09/11/2013 | CN101904093B High-speed, multi-stage class ab amplifiers |
| 09/11/2013 | CN101741319B Heat regulating device and method for D-type audio amplifier and D-type audio amplifier with heat regulation |
| 09/11/2013 | CN101494440B Device and method for improving feedback linearity of 1.5 bit Sigma-Delta modulation D type amplifier |
| 09/10/2013 | US8532961 Method and system to account for angle of attack effects in engine noise shielding tests |
| 09/10/2013 | US8532828 Gearbox noise reduction by electrical drive control |
| 09/10/2013 | US8531239 Differential amplifying apparatus |
| 09/10/2013 | US8531238 Multi-stage fully differential amplifier with controlled common mode voltage |
| 09/06/2013 | WO2013130899A1 Load current sensing |
| 09/06/2013 | WO2013129431A1 Amplifier and wireless communication unit |
| 09/06/2013 | WO2013127663A1 Protection module for rf-amplifier |
| 09/05/2013 | US20130229237 High-frequency amplifier |
| 09/05/2013 | DE102006028621B4 Variabler Verzerrungsbegrenzer unter Verwendung einer Vorausberechnungseinrichtung zur Abschneidungserfassung Variable distortion limiter using a projection device for Abschneidungserfassung |
| 09/04/2013 | EP2634918A2 Amplifier |
| 09/04/2013 | EP2634917A1 Protection module for RF-amplifier |
| 09/04/2013 | EP2634916A1 Doherty amplifier |
| 09/04/2013 | CN203180835U Switching power amplifier for magnetic suspension turbo molecular pump |
| 09/04/2013 | CN203180828U High-accuracy linear amplifier |
| 09/04/2013 | CN203180827U True logarithm amplifier |