| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 08/13/2013 | US8508296 Tunable directional power combiner |
| 08/13/2013 | US8508295 Amplifier |
| 08/12/2013 | DE202013006792U1 Elektronisches signalgesteuertes Schaltelement für eine Audio- und/oder Videoanlage An electronic signal-controlled switching element for an audio and / or video equipment |
| 08/08/2013 | WO2013113637A1 Noise canceling low-noise amplifier |
| 08/08/2013 | WO2013066466A3 Low voltage high efficiency gallium arsenide power amplifier |
| 08/08/2013 | US20130200953 Operational amplifier circuits |
| 08/08/2013 | US20130200952 Power mosfets with improved efficiency for multi-channel class d audio amplifiers and packaging therefor |
| 08/07/2013 | EP2624448A1 Low-noise amplifier |
| 08/07/2013 | EP2624447A1 Noise canceling low-noise amplifier |
| 08/07/2013 | EP2622736A1 Dutycycle adjustment to improve efficiency of a digital rf-pa |
| 08/07/2013 | EP2622735A1 Current saving by reduced modulation code and selective gating of rf signal buffers |
| 08/07/2013 | CN203120092U Connecting system of law enforcement recorder and interphone and connecting wire thereof |
| 08/07/2013 | CN203119845U Low-voltage power line carrier power amplification circuit |
| 08/07/2013 | CN203119844U Power amplifier |
| 08/07/2013 | CN203119843U Automobile audio pure digital transmission 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 | CN101897077B Radial power amplification device with phase dispersion compensation of the amplification paths |
| 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 |
| 08/06/2013 | US8503552 Method and digital communication device for receiving data using QAM symbols |
| 08/06/2013 | US8502608 Tunable power amplifier using laminate MEMS capacitors |
| 08/06/2013 | US8502607 Leakage current reduction in a power regulator |
| 08/06/2013 | US8502606 Power amplifying apparatus with dual-current control mode |
| 08/06/2013 | US8502605 Acoustic pseudo-triode characteristic amplification device and acoustic pseudo-triode characteristic push-pull amplification device |
| 08/06/2013 | US8502604 Layout method for differential amplifier and layout using the same |
| 08/06/2013 | US8502603 Output common mode voltage stabilizer over large common mode input range in a high speed differential amplifier |
| 08/06/2013 | US8502602 Class-D amplifier circuit |
| 08/06/2013 | US8502601 Integrated circuit |
| 08/06/2013 | US8502600 Combiner-less multiple input single output (MISO) amplification with blended control |
| 08/06/2013 | US8502599 System and method for a multi-band power-amplifier |
| 08/06/2013 | US8502598 Digitally-scalable transformer combining power amplifier |
| 08/01/2013 | WO2013112671A1 Power efficient transconductance amplifier apparatus and systems |
| 08/01/2013 | WO2013112631A1 Multi-mode bypass driver amplifier with tunable load matching |
| 08/01/2013 | WO2013110221A1 Vmos power amplifier cancelling distortion and temperature drift via diode |
| 08/01/2013 | US20130196714 Power amplifier, asymmetric doherty power amplifier device and base station |
| 08/01/2013 | US20130195289 Power amplifying apparatus and audio system |
| 08/01/2013 | US20130194122 Analog to digital converter with leakage current correction circuit |
| 08/01/2013 | US20130194042 Multi-Stage Amplifier Using Tunable Transmission Lines and Frequency Response Calibration of Same |
| 08/01/2013 | US20130194040 Limiting Amplifier And Method Thereof |
| 08/01/2013 | US20130194039 Differential amplifier circuit with ultralow power consumption provided with adaptive bias current generator circuit |
| 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 | 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 | CN203104371U Novel photodiode current amplifier |
| 07/31/2013 | CN203104370U Voltage tracking circuit |
| 07/31/2013 | CN203104369U Carrier-wave underclocking type class-D audio power amplifier |
| 07/31/2013 | CN203104368U Radio frequency amplifier without radio frequency switch for time division duplex system |
| 07/31/2013 | CN203104367U Zero standby delay carrier power amplifier |
| 07/31/2013 | CN203104366U Carrier wave signal amplifying circuit |
| 07/31/2013 | CN203101482U Metallic oxide arrester leakage current detection device and system |
| 07/31/2013 | CN103229423A Electronic component, power amplifier and transceiver |
| 07/31/2013 | CN102075150B Photoelectric signal preconditioning amplifying circuit of auto iris for digital gastrointestinal machine |
| 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 | US8498593 Switching power supply |
| 07/30/2013 | US8497739 Single-differential converting circuit |
| 07/30/2013 | US8497738 Broadband power combining method and high power amplifier using same |
| 07/30/2013 | US8497736 Direct DC coupled push-pull BJT driver for power amplifier with built-in gain and bias current signal dependent expansion |
| 07/30/2013 | US8497735 Vector modulator having attenuators with continuous input steering |
| 07/30/2013 | US8497734 High efficiency audio amplifier system |
| 07/30/2013 | US8497710 Low-offset current-sense amplifier and operating method thereof |
| 07/30/2013 | US8497462 Trans-impedance amplifier with variable bandwidth and digital coherent optical receiver installing the same |
| 07/27/2013 | CA2802169A1 Mobile wireless communications device including sensing transistor and hysteretic comparator and related methods |
| 07/25/2013 | WO2013110017A1 Receiver equalization circuit |
| 07/25/2013 | WO2013109578A1 Rail-to-rail input circuit |
| 07/25/2013 | WO2013108677A1 Power amplification circuit |
| 07/25/2013 | WO2013108499A1 Semiconductor integrated circuit |
| 07/25/2013 | WO2013107757A1 Amplifier circuitry for a combined ac/dc signal of an electrochemical sensing electrode |
| 07/25/2013 | US20130187718 Amplifier circuit and method for improving the dynamic range thereof |
| 07/25/2013 | US20130187717 Receiver equalization circuit |
| 07/25/2013 | US20130187715 Amplifier |
| 07/25/2013 | US20130187714 High conversion gain high suppression balanced cascode frequency quadrupler |
| 07/25/2013 | US20130187713 Power amplifier circuit and control method |
| 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 | CN203086419U Double-output large dynamic wide-band amplifier circuit |
| 07/24/2013 | CN203086418U Thermocouple signal multiplication circuit comprising precision operation amplifier |
| 07/24/2013 | CN203086417U Precision operation amplifying circuit |
| 07/24/2013 | CN203086416U Power amplifier based on triangle generator |
| 07/24/2013 | CN203086415U Three-frequency-point micro-strip compensating circuit |
| 07/24/2013 | CN203086414U Two frequency point micro-strip compensating circuit |
| 07/24/2013 | CN203086413U Electric whistle power amplifier module |
| 07/24/2013 | CN203086412U Impulse power amplifier |
| 07/24/2013 | CN203086411U Television antenna built-in amplifier |
| 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 | CN103222190A 放大器和放大方法 Amplifier and amplification method |
| 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 | CN103219960A Amplifiers and transceiver devices using the same |
| 07/24/2013 | CN103219959A Amplifying circuits and calibration methods therefor |
| 07/24/2013 | CN103219958A Ultrahigh-frequency dual-band power amplifying circuit |