| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 08/07/2013 | CN203119844U Power amplifier |
| 08/07/2013 | CN102355199B Low-noise amplifier |
| 08/07/2013 | CN102025330B Class-d amplifier |
| 08/07/2013 | CN101989837B GaAs HBT high-gain broadband linear transconductance unit circuit |
| 08/07/2013 | CN101902418B Distortion compensation apparatus and method |
| 08/07/2013 | CN101888211B Calibration method of RF power amplifier and device |
| 08/07/2013 | CN101741318B Method for controlling degree of distortion of sine vibrating table |
| 08/07/2013 | CN101499807B Self-calibration system and method for mobile phone power |
| 08/06/2013 | US8502598 Digitally-scalable transformer combining power amplifier |
| 08/01/2013 | WO2013112631A1 Multi-mode bypass driver amplifier with tunable load matching |
| 08/01/2013 | WO2012097085A8 Systems and methods for a radio frequency transmitter with improved linearity and power out utilizing pre-distortion and a gan (gallium nitride) power amplifier device |
| 08/01/2013 | US20130194038 Signal processing apparatus and amplification apparatus |
| 08/01/2013 | US20130194037 Power amplifier, radio-frequency power amplification device, and amplification control method |
| 07/31/2013 | EP2621085A2 An adjustable power splitter and corresponding methods and apparatus |
| 07/31/2013 | EP2621084A1 Power amplifier with modified doherty topology |
| 07/31/2013 | EP2619914A2 Close-loop power amplifier pre-distortion correction |
| 07/31/2013 | EP2619903A1 Calibrate output matching for correct output power |
| 07/31/2013 | EP2619902A1 Pa load-line tuning with capacitors around a balun |
| 07/31/2013 | EP2619901A1 Cryogenic low noise amplifier |
| 07/31/2013 | CN203104368U Radio frequency amplifier without radio frequency switch for time division duplex system |
| 07/31/2013 | CN203104365U Frequency current amplifying board |
| 07/31/2013 | CN203104364U Low-noise amplifying circuit and low-noise amplifier with low-noise amplifying circuit |
| 07/31/2013 | CN203104363U Device for suppressing audio power amplifying impact sound in a power amplifier |
| 07/31/2013 | CN103227614A Power amplifying apparatus and audio system |
| 07/31/2013 | CN103227613A Adjustable power splitter and corresponding methods & apparatus |
| 07/31/2013 | CN102324895B POP noise suppression circuit and method |
| 07/31/2013 | CN102017400B Efficient linear LINC power amplifier |
| 07/31/2013 | CN101978597B Low distortion amplifier and doherty amplifier using low distortion amplifier |
| 07/30/2013 | US8497733 Offset correction circuit |
| 07/30/2013 | CA2545984C Filtering and boosting a signal from a drive circuit |
| 07/25/2013 | WO2013110017A1 Receiver equalization circuit |
| 07/25/2013 | WO2013109578A1 Rail-to-rail input circuit |
| 07/25/2013 | WO2013109467A2 Method and apparatus for resource block based transmitter optimization in wireless communication devices |
| 07/25/2013 | WO2013108677A1 Power amplification circuit |
| 07/25/2013 | WO2013108499A1 Semiconductor integrated circuit |
| 07/25/2013 | WO2013108096A1 Radio frequency digital filter group delay mismatch reduction |
| 07/25/2013 | WO2013108094A1 Method and system for generating odd order predistortions for a power amplifier receiving concurrent dual band inputs |
| 07/25/2013 | WO2013107756A1 Pre-distortion in rf path in combination with shaping table in envelope path for envelope tracking amplifier |
| 07/25/2013 | WO2013107755A1 Crest factor reduction applied to shaping table to increase power amplifier efficiency of envelope tracking amplifier |
| 07/25/2013 | WO2013107708A1 Amplifier device and method for activating an amplifier device or the amplifier device |
| 07/25/2013 | US20130187716 Pilot signal generation circuit |
| 07/25/2013 | US20130187714 High conversion gain high suppression balanced cascode frequency quadrupler |
| 07/25/2013 | US20130187712 Impedance matching circuit with tunable notch filters for power amplifier |
| 07/25/2013 | US20130187711 Method and apparatus for resource block based transmitter optimization in wireless communication devices |
| 07/25/2013 | US20130187710 Amplifier circuit |
| 07/25/2013 | US20130187620 Power efficient transconductance amplifier apparatus and systems |
| 07/24/2013 | EP2618483A1 System and method for operating a switched mode amplifier |
| 07/24/2013 | EP2618482A1 Power amplifier, asymmetric doherty power amplifier device and base station |
| 07/24/2013 | EP2618481A1 Power amplifier circuit and control method |
| 07/24/2013 | EP2615970A1 A signal processing device for use in electroencephalography and a cable system incorporating the device |
| 07/24/2013 | CN203086421U Power controlling apparatus of mobile device and mobile device capable of realizing power controlling by temperature detection |
| 07/24/2013 | CN203086410U Zero-output large dynamic wide-band amplifier circuit |
| 07/24/2013 | CN203086409U Audio amplification circuit having function of proofing voice cracking |
| 07/24/2013 | CN203086408U Field-effect tube power amplifier and system |
| 07/24/2013 | CN103222189A Hearing aid with an H-bridge output stage and a method of driving an output stage |
| 07/24/2013 | CN103222188A Low-noise amplifier with impedance boosting circuit |
| 07/24/2013 | CN103219961A Bandwidth-adjustable operational amplifier circuit |
| 07/24/2013 | CN103219959A Amplifying circuits and calibration methods therefor |
| 07/24/2013 | CN103219957A Power amplifier with digital predistortion compensation and combiner offset function |
| 07/24/2013 | CN103219953A Same-position distortion compensation circuit |
| 07/24/2013 | CN103219952A Broadband low noise amplifier adopting noise cancellation technology |
| 07/24/2013 | CN103219951A Low-power consumption and low-noise amplifier adopting noise cancellation technology |
| 07/24/2013 | CN103219950A High-efficiency power amplification circuit with three-path combination secondary compensation function |
| 07/24/2013 | CN103219949A Power amplifier with modified doherty topology |
| 07/24/2013 | CN103219948A High-efficiency power amplifier with error signal compensation function |
| 07/24/2013 | CN103219947A Voltage regulator |
| 07/24/2013 | CN102624337B 2-fold switched capacitor amplifier insensitive to capacitor mismatch and sampling signal common mode |
| 07/24/2013 | CN102045281B Signal modulation method |
| 07/24/2013 | CN101868912B A composite amplifier, a radio terminal and a method for improving the efficiency of the composite amplifier |
| 07/23/2013 | US8494476 Monolithic LNA support IC |
| 07/23/2013 | US8494096 Automatically setting an operative state of a wideband amplifier |
| 07/23/2013 | US8493144 Distortion compensation device, radio communication device, and distortion compensation method |
| 07/23/2013 | US8493143 Predistorition linearizer with bridge topology having an equalizer stage for each bridge arm |
| 07/23/2013 | US8493140 Output coupling capacitor free audio power amplifier dynamically configured for speakers and headphones with excellent click and pop performance |
| 07/23/2013 | US8493139 Low noise auto-zero circuits for amplifiers |
| 07/18/2013 | US20130181777 Voltage regulator |
| 07/17/2013 | EP2614584A2 Power amplifier with transistor input mismatching |
| 07/17/2013 | EP2614346A1 Method and circuit for processing a signal supplied by a piezoelectric sensor, and pressure-measuring device for piston engine |
| 07/17/2013 | CN203071942U Light transmitter and pre-distortion circuit thereof |
| 07/17/2013 | CN203071878U Wideband direct-current amplifier based on voltage-controlled operational amplifier |
| 07/17/2013 | CN203071874U Over current failure self-locking protection circuit |
| 07/17/2013 | CN203071873U Pre-corrected power amplifier structure |
| 07/17/2013 | CN203071872U Low-noise power amplification device and satellite navigation receiving device |
| 07/17/2013 | CN203071871U Multi-channel channelization superconductivity filter and amplification switch assembly |
| 07/17/2013 | CN103208970A Gate voltage temperature compensation circuit and method of radio frequency power amplifier |
| 07/17/2013 | CN101473531B Integrated implementation of a voltage boost follower and method therefor |
| 07/16/2013 | US8489209 Method for analyzing and diagnosing large scale process automation control systems |
| 07/16/2013 | US8489041 Multi-element amplitude and phase compensated antenna array with adaptive pre-distortion for wireless network |
| 07/16/2013 | US8487702 Transimpedance amplifier and method thereof |
| 07/16/2013 | US8487699 Inductive-element feedback-loop compensator |
| 07/16/2013 | US8487698 Amplifier with pass-through mode |
| 07/16/2013 | US8487697 Fully differential autozeroing amplifier |
| 07/16/2013 | US8485993 Switched resonant ultrasonic power amplifier system |
| 07/11/2013 | WO2013102965A1 Quadrature hybrid coupler, amplifier, and wireless communication device |
| 07/11/2013 | WO2013102964A1 Quadrature hybrid coupler, amplifier, and wireless communication device |
| 07/11/2013 | WO2013071152A3 Flip-chip linear power amplifier with high power added efficiency |
| 07/11/2013 | WO2013071133A3 Radio frequency power amplifiers |
| 07/11/2013 | US20130176075 Dual parallel amplifier based dc-dc converter |
| 07/11/2013 | DE102004001434B4 Speicherbauelement Memory device |
| 07/10/2013 | EP2613450A1 Saw-less receiver with RF frequency translated BPF |