| 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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| 07/10/2013 | EP2613438A1 Amplifier |
| 07/10/2013 | EP2613437A2 Multi-stage fully differential amplifier with controlled common mode voltage |
| 07/10/2013 | EP2612438A2 Low distortion filters |
| 07/10/2013 | CN203057147U Transmit-receive commutation circuit of bilateral amplifier |
| 07/10/2013 | CN203057078U Amplifying circuit with filtering function |
| 07/10/2013 | CN203057077U Enhanced gain-type amplifying circuit |
| 07/10/2013 | CN203057076U Amplifying circuit with high upper limiting frequency |
| 07/10/2013 | CN203057075U Low-noise amplifier |
| 07/10/2013 | CN203057074U Self-heat elimination low-noise pre-amplifier |
| 07/10/2013 | CN203057073U Small-sized Doherty circuit of wide-band |
| 07/10/2013 | CN103201951A Bias control circuit |
| 07/10/2013 | CN103201950A Joint process estimator with variable tap delay line for use in power amplifier digital predistortion |
| 07/10/2013 | CN103201949A Non-linear model with tap output normalization |
| 07/10/2013 | CN103199812A Amplifier for wireless receiver and associated method |
| 07/10/2013 | CN103199808A Intermodulation offset device for passive device |
| 07/10/2013 | CN103199807A Split compensation two-stage operational amplifier based on inverter input structure |
| 07/10/2013 | CN103199805A Multi-band matching network for RF power amplifiers |
| 07/10/2013 | CN103199804A Wideband amplifier with high-power feedback structure |
| 07/10/2013 | CN103199803A LNA having a post-distortion mode and a high-gain mode and control method thereof |
| 07/10/2013 | CN103199802A Single-chip low-noise amplifier |
| 07/10/2013 | CN103199801A Turbine flow sensor preamplifier with nonlinearity compensation and compensation method |
| 07/10/2013 | CN103199800A Class D de-noising circuit |
| 07/10/2013 | CN103199799A Power amplifier with function of process compensation offset |
| 07/10/2013 | CN103199798A Doherty power amplifying circuit and power amplifier |
| 07/10/2013 | CN103199797A Amplifying circuit with self-adaptive combining cancellation function |
| 07/10/2013 | CN102075146B G class audio frequency amplification system and method |
| 07/09/2013 | US8482355 Power amplifier |
| 07/09/2013 | US8482349 Method and apparatus for linearizing a non-linear power amplifier |
| 07/09/2013 | US8482348 Class of power amplifiers for improved back off operation |
| 07/09/2013 | US8482347 Amplifier with reduced on/off transient and multi-point offset compensation |
| 07/09/2013 | US8482342 Circuit for generating a reference voltage with compensation of the offset voltage |
| 07/04/2013 | WO2013102016A1 System and method for utilizing audio encoding for measuring media exposure with environmental masking |
| 07/04/2013 | WO2013100463A1 Apparatus and method for gain of driver amplifier exponential variable in wireless transmitter |
| 07/04/2013 | WO2013098639A1 Bandwidth-extended doherty power amplifier |
| 07/04/2013 | WO2013040272A3 Impedance matching circuits with multiple configurations |
| 07/04/2013 | US20130169359 Power Distortion-Based Servo Control Systems For Frequency Tuning RF Power Sources |
| 07/04/2013 | US20130169357 RF Power Amplifier Circuit With Mismatch Tolerance |
| 07/04/2013 | US20130169356 Switching power amplifier and method of controlling the same |
| 07/04/2013 | DE10305360B4 Hochfrequenz-Verstärkerschaltung mit veränderbarer Ausgangskapazität High-frequency amplifier circuit with variable output capacity |
| 07/04/2013 | DE102005007876B4 Verstärkerschaltung mit reduzierter Temperaturabhängingkeit der Verstärkung Amplifier circuit with reduced Temperaturabhängingkeit the gain |
| 07/03/2013 | EP2611029A2 Power distortion-based servo control systems for frequency tuning Rf power sources |
| 07/03/2013 | EP2611028A1 Multi-stage fully differential amplifier with controlled common mode voltage |
| 07/03/2013 | CN203039645U 1 KW wideband power amplifier |
| 07/03/2013 | CN203039644U Beidou and GPS (global positioning system) low-noise amplifier |
| 07/03/2013 | CN203039643U Four-stage double-balanced power amplifier |
| 07/03/2013 | CN203038479U GPS station reporting device signal amplification device |
| 07/03/2013 | CN103190082A Electronic component |
| 07/03/2013 | CN103187968A Power distortion-based servo control systems for frequency tuning RF power sources |
| 07/03/2013 | CN103187936A Fault protection method and device for power amplifier |
| 07/03/2013 | CN103187935A Circulator power amplifier circuit and design method thereof |
| 07/03/2013 | CN103187934A Protection method for radio frequency power amplifier and RRU (remote RF (radio frequency) unit) |
| 07/03/2013 | CN103187933A Protection circuit and protection method for power amplifier |
| 07/03/2013 | CN103187932A Power amplifier and predistorter thereof |
| 07/03/2013 | CN103187931A Circuit structure for realizing dead time exemption in Class D audio power amplifier |
| 07/03/2013 | CN103187930A Input clamp used in design of class AB power amplifier of automobile stereo for improving sound quality |
| 07/03/2013 | CN103187929A Doherty power amplifier with expanded bandwidth |
| 07/03/2013 | CN102119484B Power amplification device, and transmission device and communication device using same |
| 07/03/2013 | CN102064770B Remote radio unit and method for regulating drain voltage thereof |
| 07/03/2013 | CN101652925B Flexible dynamic range amplifier |
| 07/02/2013 | US8478211 Adaptive cartesian loop transmitter for broadband and optimal loop stability adjustment |
| 07/02/2013 | US8476975 Operational amplifying device |
| 07/02/2013 | US8476973 Switch device and layout design method for switch device |
| 06/27/2013 | WO2013095911A1 Cascode amplifier |
| 06/27/2013 | WO2013094626A1 Class-d power amplifier |
| 06/27/2013 | WO2013094416A1 High-frequency module and mobile terminal using same |
| 06/27/2013 | WO2013094415A1 Semiconductor integrated circuit device and high-frequency power amplifier module |
| 06/27/2013 | WO2013094172A1 Signal playback device and signal playback method |
| 06/27/2013 | WO2013093989A1 Amplification circuit |
| 06/27/2013 | WO2013093861A1 Adaptive predistortion for a non-linear subsystem based on a model as a concatenation of a non-linear model followed by a linear model |
| 06/27/2013 | WO2013093859A1 Architecture of nonlinear rf filter-based transmitter |
| 06/27/2013 | WO2013092651A1 Mobile telephone adaptable to a restricted-access area and operating cell of such telephone |
| 06/27/2013 | WO2013091905A1 Radio frequency power amplifier circuit and method |
| 06/27/2013 | WO2013067031A3 Apparatus and methods for power amplifiers |
| 06/27/2013 | WO2012085685A8 Accurate bias tracking for process variation and supply modulation |
| 06/27/2013 | US20130163696 Apparatus for compensating for distortion of transmitter array in radio communication system and method for controlling the same |
| 06/27/2013 | US20130162348 Adaptive predistortion for a non-linear subsystem based on a model as a concatenation of a non-linear model followed by a linear model |
| 06/27/2013 | US20130161492 Switching circuit, charge sense amplifier including switching circuit, and photon counting device including switching circuit |
| 06/26/2013 | EP2608410A1 A method for pulse width modulation of signals, and a transmitter therefor |
| 06/26/2013 | EP2608403A1 A method for signal modulation using pulse width modulators |
| 06/26/2013 | EP2608402A1 Using a new synchronization scheme for a multi-channel class-d amplifier |
| 06/26/2013 | EP2608401A1 Circuit for transmitting ASK RF signals with adaptation of the edges of the data signals |
| 06/26/2013 | EP2608400A1 N way Doherty amplifier |
| 06/26/2013 | EP2606571A2 Remotely reconfigurable distributed antenna system and methods |
| 06/26/2013 | CN203027206U Circuit restraining backward flow of series operational amplifier circuit |
| 06/26/2013 | CN203027203U Active capacitive circuit |
| 06/26/2013 | CN203027202U Circuit for solving backward flowing problem of series connection current of operational amplifiers |
| 06/26/2013 | CN203027201U Loop with temperature compensation |
| 06/26/2013 | CN103181086A Matching network for transmission circuitry |
| 06/26/2013 | CN103178789A Low-temperature drift detuning self-calibration operational amplifier circuit and design method thereof |
| 06/26/2013 | CN103178788A Wide power supply voltage working low noise amplifier bias circuit |
| 06/26/2013 | CN103178787A N way doherty amplifier |
| 06/26/2013 | CN103178786A Multiway Doherty amplifier |
| 06/26/2013 | CN103178785A Novel Doherty power amplifier |
| 06/26/2013 | CN101860327B Cascode amplifier and method for controlling current of the same |
| 06/25/2013 | US8471632 Distortion compensation circuit |
| 06/25/2013 | US8471630 Fast settling reference voltage buffer and method thereof |
| 06/25/2013 | US8471629 Providing automatic power control for a power amplifier |
| 06/25/2013 | US8471628 Amplifier with reduced output transients and method therefor |
| 06/20/2013 | WO2013090851A1 Techniques for pga linearity |
| 06/20/2013 | WO2013090849A1 Load impedance detection |