| 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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| 07/13/2010 | US7755422 Power control and modulation of switched-mode power amplifiers with one or more stages |
| 07/13/2010 | US7755421 Analog amplifier having DC offset cancellation circuit and method of offset cancellation for analog amplifiers |
| 07/08/2010 | WO2010078142A2 Dynamic signal contamination suppression |
| 07/08/2010 | WO2010076845A1 Polar modulation apparatus and communication device |
| 07/08/2010 | WO2010076721A1 Power amplifier protection |
| 07/08/2010 | WO2010076672A1 Amplifier circuitry, integrated circuit and communication unit |
| 07/08/2010 | US20100171552 Push-Pull Linear Hybrid Class H Amplifier |
| 07/08/2010 | US20100171551 Amplifier and switched capacitor amplifier circuit |
| 07/08/2010 | DE102005035150B4 Verstärkerschaltung und Verfahren zum Verstärken eines zu verstärkenden Signals Amplifier circuit and method for amplifying a signal to be amplified |
| 07/07/2010 | EP2204906A1 Distributed active transformer amplifier with differential power combiner |
| 07/07/2010 | EP2204903A1 A radio station and active antenna array |
| 07/07/2010 | EP2203975A1 Offset cancellation in a capacitively coupled amplifier |
| 07/07/2010 | EP2203974A1 Input circuitry for transistor power amplifier and method for designing such circuitry |
| 07/07/2010 | EP2005580B1 A method for compensating signal distortions in composite amplifiers |
| 07/07/2010 | CN101771386A Class D audio power amplifier with anti-saturation distortion circuit |
| 07/07/2010 | CN101771384A Non-dead time power amplifier output-stage circuit |
| 07/07/2010 | CN101771383A Signal predistortion treatment method and device |
| 07/06/2010 | US7750734 Apparatus and methods for amplifiers |
| 07/06/2010 | US7750732 Adaptive rail amplifier (ARA) technology |
| 07/01/2010 | WO2010074615A1 A multi stage amplifier |
| 07/01/2010 | WO2010074187A1 Power limiting circuit |
| 07/01/2010 | WO2010074069A1 Addition circuit, power amplifier circuit using same, and transmission device and communication device using the power amplifier circuit |
| 07/01/2010 | WO2010073942A1 Power amplification device |
| 07/01/2010 | WO2010073941A1 Power amplication device |
| 07/01/2010 | WO2010073889A1 Distortion compensation circuit, transmitter, and distortion compensation method |
| 07/01/2010 | WO2010073803A1 Distortion compensating circuit and radio base station |
| 07/01/2010 | WO2010073789A1 Distortion compensation circuit |
| 07/01/2010 | WO2010073483A1 Distortion compensation amplifier |
| 07/01/2010 | WO2010072550A1 Mixed-signal transmission circuit for switching power amplifiers |
| 07/01/2010 | US20100164620 Predistortion apparatus and predistortion method |
| 07/01/2010 | US20100164618 Feedback network for cascaded amplifiers |
| 07/01/2010 | US20100164617 Dynamic signal contamination suppression |
| 07/01/2010 | US20100164616 Chopping technique for continuous time sigma-delta ADCs without Q-noise folding |
| 07/01/2010 | US20100164599 Semiconductor device and electronic apparatus using the same |
| 07/01/2010 | CA2748192A1 Distortion compensating circuit and radio base station |
| 07/01/2010 | CA2748191A1 Distortion compensation circuit |
| 06/30/2010 | EP2202880A1 Audio power amplifier |
| 06/30/2010 | EP2202879A1 A predistortion apparatus and predistortion method |
| 06/30/2010 | EP2202878A1 Distortion compensation apparatus and method |
| 06/30/2010 | EP1719246B1 Bipolar differential input stage with input bias current cancellation circuit |
| 06/30/2010 | CN101765969A Distortion compensating apparatus and method |
| 06/30/2010 | CN101765968A Semiconductor device |
| 06/30/2010 | CN101764583A Power amplifier, integrated circuit, and communication apparatus |
| 06/30/2010 | CN101764582A Systems and methods for self-mixing adaptive bias circuit for power amplifier |
| 06/30/2010 | CN101764581A Integrated power amplifier for use in wireless communication devices |
| 06/30/2010 | CN101764580A Systems and methods for an adaptive bias circuit for a differential power amplifier |
| 06/30/2010 | CN101764577A Baseband pre-distortion power amplifier linearization method based on one-way feedback and non-iterative technique |
| 06/30/2010 | CN101764576A Amplifier circuit with voltage-stabilizing power supply |
| 06/30/2010 | CN101764575A Audio power amplifier start-up charging circuit |
| 06/30/2010 | CN101764574A Audio-frequency amplifier circuit with noise suppression |
| 06/29/2010 | US7746955 Power amplifier pre-distortion |
| 06/29/2010 | US7746292 Reconfigurable radiation desensitivity bracket systems and methods |
| 06/29/2010 | US7746167 Method of and circuit for adapting parameters for a predistortion circuit in an integrated circuit |
| 06/29/2010 | CA2529698C Digitally adaptive modulated transmitter |
| 06/24/2010 | WO2010071876A1 Class ab amplifier with resistive level-shifting circuitry |
| 06/24/2010 | WO2010071310A2 Method and apparatus for enhancing performance of doherty power amplifier |
| 06/24/2010 | WO2010071248A1 Enhanced chireix combiner |
| 06/24/2010 | WO2010070231A1 Device and method for processing a signal, and radiofrequency transmission system comprising such a device |
| 06/24/2010 | US20100159856 Distortion compensator, distortion compensation method, and transmitter |
| 06/24/2010 | US20100158155 System and method for training pre-inverse of nonlinear system |
| 06/24/2010 | US20100156530 Distortion compensation apparatus and method |
| 06/24/2010 | US20100156529 Apparatus and method for estimating power for amplifier |
| 06/23/2010 | EP2200176A1 Adjustable integrator using a single capacitance |
| 06/23/2010 | EP2198312A1 Electrostatic device for damping a mechanical vibration movement of a resonant moving object |
| 06/23/2010 | CN201515348U 300B and 845 power electronic tube driving circuit |
| 06/23/2010 | CN1996748B A balanced amplifier |
| 06/23/2010 | CN1679232B LDMOS based feed forward amplifier with improved efficiency |
| 06/23/2010 | CN101753922A System for improving playback distortion factor and television |
| 06/23/2010 | CN101753108A Power amplifier having transformer |
| 06/23/2010 | CN101753107A Radio frequency circuit |
| 06/23/2010 | CN101753106A RF power amplifier intervalve matching circuit |
| 06/23/2010 | CN101753105A Distortion compensation apparatus and method |
| 06/23/2010 | CN101753104A Pseudo-differential motion switching capacitance circuit |
| 06/23/2010 | CN101752644A 天线放大器 Antenna Amplifier |
| 06/23/2010 | CN101309071B Apparatus for inhibiting transient noise of audio power amplifier |
| 06/23/2010 | CN101127511B A self-adapted automatic adjusting method and its module for low noise amplifier |
| 06/22/2010 | US7742539 Adaptation of IQ-error compensation |
| 06/22/2010 | US7741910 Capacitor gain-boost circuit |
| 06/22/2010 | US7741906 Method of and circuit for generating parameters for a predistortion circuit in an integrated circuit |
| 06/22/2010 | US7741903 Distortion-driven power amplifier power supply controller |
| 06/17/2010 | WO2010068926A1 Techniques for improving amplifier linearity |
| 06/17/2010 | WO2010068811A1 Amplifier with programmable off voltage |
| 06/17/2010 | WO2010068152A1 Multi-stage amplifier |
| 06/17/2010 | WO2010067823A1 Class-d electrical amplifier |
| 06/17/2010 | WO2008027295A3 Adaptive predistortion for controlling an open loop power amplifier |
| 06/17/2010 | US20100148876 Amplifier Arrangement and Method for Amplifying a Signal |
| 06/17/2010 | US20100148875 circuit for compensation of leakage current-induced offset in a single-ended op-amp |
| 06/17/2010 | US20100148867 Audio Out Unit |
| 06/17/2010 | US20100148866 Systems and Methods for Power Amplifiers with Voltage Boosting Multi-Primary Transformers |
| 06/17/2010 | US20100148865 Method and system for calculating the pre-inverse of a nonlinear system |
| 06/17/2010 | US20100148864 Amplifier Control Device |
| 06/17/2010 | DE102005020319B4 Verstärkeranordnung mit einem umschaltbaren Verstärkungsfaktor und Verfahren zum Verstärken eines zu verstärkenden Signals mit einem umschaltbaren Verstärkungsfaktor Amplifier arrangement with a switchable gain and method for amplifying a signal to be amplified with a switchable gain factor |
| 06/16/2010 | EP2197030A2 A high frequency semiconductor device |
| 06/16/2010 | EP2195926A2 Tunable rf filter |
| 06/16/2010 | EP2195922A2 Automatic common-mode rejection calibration |
| 06/16/2010 | EP2195921A2 Integrated doherty amplifier |
| 06/16/2010 | CN201509182U MOS efficient carrier digital amplifying circuit |
| 06/16/2010 | CN1985442B Digital linearizing system |
| 06/16/2010 | CN1922788B Load insensitive power amplifier |
| 06/16/2010 | CN1913344B Methods and apparatus for reducing output current oscillations of a driver |