| 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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| 09/27/2012 | US20120242405 Frequency-Desensitizer for Broadband Predistortion Linearizers |
| 09/27/2012 | DE102011015010A1 Verfahren zum Betreiben eines aktiven Motorlagers für ein Fahrzeug und aktives Motorlager A method of operating an active engine mount for a vehicle and an active engine mount |
| 09/27/2012 | DE102011014843A1 Verstärkeranordnung und Verfahren zum Betreiben einer Verstärkeranordnung Amplifier arrangement and method for operating an amplifier arrangement |
| 09/26/2012 | EP2503689A1 Method and device for controlling time slots |
| 09/26/2012 | EP2503688A1 Method and device for adjusting power amplifier voltage |
| 09/26/2012 | EP2502345A1 An adaptive digital pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications |
| 09/26/2012 | EP2502344A1 Chopper stabilized amplifier with filtering |
| 09/26/2012 | EP2502343A1 Amplifier assembly having controlled return of power loss |
| 09/26/2012 | EP2502337A2 Power supplying system |
| 09/26/2012 | EP2502325A2 Forward link signaling within a wireless power system |
| 09/26/2012 | CN202455318U Shape-adjustable linearizer of space traveling wave tube (TWT) |
| 09/26/2012 | CN202455317U Low temperature drift maladjustment self-correcting operational amplifier circuit |
| 09/26/2012 | CN202455316U Internally matched amplifier |
| 09/26/2012 | CN102696172A High-frequency power amplifier having Doherty enhancement |
| 09/26/2012 | CN102696164A Forward link signaling within a wireless power system |
| 09/26/2012 | CN102694550A Nonlinearity extractor of ultra-wideband radio-frequency power amplifier |
| 09/26/2012 | CN102694514A Power amplifier |
| 09/26/2012 | CN102694513A Class B amplifier integrated circuit |
| 09/26/2012 | CN102694511A Low-voltage driven integrated circuit amplifier for vehicle control circuit |
| 09/26/2012 | CN102694510A Chopping amplifier circuit coupled with sensor |
| 09/26/2012 | CN102694509A An integrated electro-physiological signal amplifier with an AC excitation function |
| 09/26/2012 | CN102694508A Multi-channel Doherty amplifier |
| 09/26/2012 | CN102694507A Wideband doherty amplifier circuit |
| 09/26/2012 | CN102694506A Audio-frequency amplifier system powered based on power supply of computer USB (Universal Serial Bus) power source and integration of USB audio card |
| 09/26/2012 | CN102694505A Passive audio amplifier |
| 09/26/2012 | CN101888215B Radio-frequency power amplifier circuit with adjustable predistortion function |
| 09/26/2012 | CN101640516B Digital predistortion power amplifier and signal processing method thereof |
| 09/25/2012 | US8275582 Method and system for clock synchronization using templated adaptive maneuver detection |
| 09/25/2012 | US8274333 Method and apparatus for protecting devices in an RF power amplifier |
| 09/25/2012 | US8274329 Signal compensation device and communication apparatus |
| 09/25/2012 | US8274327 Switched capacitor amplifier |
| 09/25/2012 | US8274326 Equalization circuit |
| 09/25/2012 | CA2505189C Systems and methods of dynamic bias switching for radio frequency power amplifiers |
| 09/20/2012 | WO2012125767A1 Charge pump electrostatic discharge protection |
| 09/20/2012 | WO2012125657A2 Apparatus and methods for capacitive load reduction |
| 09/20/2012 | WO2012125279A2 Enhanced doherty amplifier |
| 09/20/2012 | WO2012124106A1 Differential current source and differential current mirror circuit |
| 09/20/2012 | WO2012123836A1 Spread-spectrum pilot signals in an electronic duplexer |
| 09/20/2012 | WO2012122800A1 Power supply modulation method and power supply modulator |
| 09/20/2012 | US20120235741 Timing alignment for power amplifier |
| 09/20/2012 | US20120235740 Low-Cost Magnetic Stripe Reader Using Independent Switching Thresholds |
| 09/20/2012 | CA2829021A1 Spread-spectrum pilot signals in an electronic duplexer |
| 09/19/2012 | EP2501037A1 Output signal termination concept for switch-mode power amplifier |
| 09/19/2012 | EP2501035A1 Amplifier |
| 09/19/2012 | EP2499739A1 Method for determining a matching network based on poincaré discs of reflection factors |
| 09/19/2012 | EP2499738A1 Cascaded amplifiers with transformer-based bypass mode |
| 09/19/2012 | CN202444467U Small-size Doherty circuit adaptable to 1GHz-below radiofrequency communication system |
| 09/19/2012 | CN102687391A Cascaded amplifiers with transformer-based bypass mode |
| 09/19/2012 | CN102684641A Multi-standard, multi-frequency band low-noise amplifier |
| 09/19/2012 | CN102684613A Over-temperature protection circuit for radio frequency power amplifier |
| 09/19/2012 | CN102684612A Method and device of controlling the linearity of low noise amplifier |
| 09/19/2012 | CN102684611A Vector modulator using time delayer and phase shifters |
| 09/19/2012 | CN102684610A Distributed amplifier with improved stabilization |
| 09/19/2012 | CN102680406A Method and circuit for processing probe signal of infrared gas sensor |
| 09/19/2012 | CN102045028B Low noise amplifier with adjustable gain |
| 09/19/2012 | CN101771386B Class D audio power amplifier with anti-saturation distortion circuit |
| 09/18/2012 | US8271212 Method for robust gauging accuracy for level gauges under mismatch and large opening effects in stillpipes and related apparatus |
| 09/18/2012 | US8269554 System and method for controlling radio frequency transmissions from an electronic device |
| 09/13/2012 | WO2012120570A1 Current-source control circuit |
| 09/13/2012 | US20120229216 Distributed amplifier with improved stabilization |
| 09/13/2012 | US20120229209 Power amplification device, transmitter, and power amplification control method |
| 09/13/2012 | US20120229206 Minimum Feedback Radio Architecture with Digitally Configurable Adaptive Linearization |
| 09/12/2012 | EP2498399A2 Distributed amplifier with improved stabilization |
| 09/12/2012 | EP2498396A2 Doherty amplifier |
| 09/12/2012 | CN202435345U Energy-saving high-efficiency audio power amplifier |
| 09/12/2012 | CN202435344U Travelling wave tube linearizer |
| 09/12/2012 | CN102668386A Rf信号生成电路以及无线发送机 Rf signal generating circuit and a wireless transmitter |
| 09/12/2012 | CN102668372A Digital charge amplifier and method for converting charge signals into digital signals |
| 09/12/2012 | CN102664598A Hot backup system of radio frequency power amplifiers and realization method |
| 09/12/2012 | CN102664596A High fidelity transistor audio power amplifying device |
| 09/12/2012 | CN102664594A Log amplifier with temperature compensation function |
| 09/12/2012 | CN101984555B Parametric array audio play system |
| 09/12/2012 | CN101527544B Device and method for identifying inverse characteristic of nonlinear system, power amplifier and predistorter thereof |
| 09/11/2012 | US8265769 Chopper-stabilized instrumentation amplifier for wireless telemetry |
| 09/07/2012 | WO2012118921A2 Power supply controller for multi-gain step rf power amplifier |
| 09/07/2012 | WO2012118217A1 Power supply device and control method |
| 09/07/2012 | WO2012117757A1 Bias control circuit |
| 09/07/2012 | WO2012116720A1 Hearing aid with an h-bridge output stage and a method of driving an output stage |
| 09/07/2012 | CA2828263A1 Hearing aid with an h-bridge output stage and a method of driving an output stage |
| 09/06/2012 | US20120223772 Multilevel class-d amplifier |
| 09/06/2012 | DE102012202870A1 Breitbandige Doherty-Verstärkerschaltung Broadband Doherty amplifier circuit |
| 09/06/2012 | DE102011012927A1 Verstärkermodul Amplifier module |
| 09/06/2012 | DE102004017165B4 Schaltung zur Erhöhung der Transitfrequenz eines Verstärkerelements Circuit for increasing the gain-bandwidth product of an amplifier element |
| 09/05/2012 | EP2495873A1 Amplification circuit |
| 09/05/2012 | EP2495871A1 Doherty amplifier comprising different transistor technologies |
| 09/05/2012 | EP2495870A1 Mixing circuit |
| 09/05/2012 | EP2494690A1 Multi-port amplification device that self-compensates in the presence of traffic |
| 09/05/2012 | EP2251975B1 Electronic device with data-rate-dependent power amplifier bias |
| 09/05/2012 | CN202424633U Microwave amplifier voltage compensation system |
| 09/05/2012 | CN202424629U Trunking communication power amplifier |
| 09/05/2012 | CN202424628U Protective device of low-noise amplifier tube |
| 09/05/2012 | CN202424627U Grid voltage temperature compensating circuit of radio frequency power amplifier |
| 09/05/2012 | CN202424626U Multichannel asymmetric Doherty amplifier |
| 09/05/2012 | CN202424625U Power amplifying circuit in multi-carrier communication system of power line |
| 09/05/2012 | CN202424624U Monolithic integrated power amplifier chip |
| 09/05/2012 | CN102656800A Acoustic apparatus, acoustic system, and audio signal control method |
| 09/05/2012 | CN102656798A Instrumentation amplifier calibration method, system and apparatus |
| 09/05/2012 | CN102656797A Amplifier assembly having controlled return of power loss |
| 09/05/2012 | CN101938255B Low-power consumption true logarithmic amplifier |
| 09/05/2012 | CN101814903B Tunable ferro-electric filter |