| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 06/09/2011 | US20110133839 Arrangement for calibrating the quiescent operating point of a push-pull amplifier |
| 06/09/2011 | US20110133838 Low output impedance rf amplifier |
| 06/09/2011 | US20110133837 Variable gain amplifier |
| 06/09/2011 | US20110133836 Class-d amplifier |
| 06/09/2011 | US20110133835 Double transformer balun for maximum power amplifier power |
| 06/09/2011 | US20110133833 Systems and methods providing multi-path low noise amplifiers with seamless switching |
| 06/09/2011 | DE102006004257B4 Adaptivverstärker Adaptivverstärker |
| 06/08/2011 | EP2330831A1 Microphone assembly |
| 06/08/2011 | EP2330735A2 Operational transconductance amplifier |
| 06/08/2011 | EP2330734A1 Power amplifier apparatus comprising digital delta-sigma modulation and a pulse with modulator and method thereof |
| 06/08/2011 | EP2329595A1 Techniques for improving balun loaded-q |
| 06/08/2011 | EP2329594A1 Low distortion cascode amplifier circuit |
| 06/08/2011 | EP2329593A1 High voltage regulated power supply |
| 06/08/2011 | EP2329592A1 Doherty amplifier with input network optimized for mmic |
| 06/08/2011 | EP2011231B1 Output networks in combination with chireix system |
| 06/08/2011 | CN201860298U Linear channel amplifier |
| 06/08/2011 | CN201860297U Class D audio power amplifier system |
| 06/08/2011 | CN201860296U HUB type audio frequency power amplifier with inbuilt USB (universal serial bus) sound card |
| 06/08/2011 | CN1823469B Amplifying circuit comprising an envelope modulated limit cycles modulator circuit |
| 06/08/2011 | CN1813403B Differential amplifier with selectable gain |
| 06/08/2011 | CN1768472B Digital amplifier |
| 06/08/2011 | CN1670858B Memory module |
| 06/08/2011 | CN102089968A Audio amplifier and method for reconfiguring an audio amplifier |
| 06/08/2011 | CN102089966A N-way DOHERTY distributed power amplifier |
| 06/08/2011 | CN101599743B Baran impedance converter for radio frequency pull-push power amplifier |
| 06/08/2011 | CN101557203B Power amplifier with overcurrent protection |
| 06/08/2011 | CN101499777B Highly efficient power amplifier and implementing method thereof |
| 06/08/2011 | CN101425780B Low-noise wide-band amplifier circuit |
| 06/08/2011 | CN101420207B Operational amplifier, integrated circuit and method for dynamic current compensation |
| 06/08/2011 | CN101320963B Power amplifier |
| 06/08/2011 | CN101174826B Power electronic switching circuit and its method for controlling and switching dead time |
| 06/08/2011 | CN101154928B Operational amplifier and method of driving liquid crystal display |
| 06/07/2011 | US7956692 Wide-band amplifier circuit with improved gain flatness |
| 06/07/2011 | US7956691 System and method for over-voltage protection of a power amplifier |
| 06/07/2011 | US7956690 Operational amplification circuit |
| 06/07/2011 | US7956689 Programmable gain amplifier and transconductance compensation system |
| 06/07/2011 | US7956688 Common mode cancellation in differential networks |
| 06/07/2011 | US7956687 Constant-bandwidth variable gain amplifier |
| 06/07/2011 | US7956686 Differential amplifier with symmetric circuit topology |
| 06/07/2011 | US7956685 Adaptive operational transconductance amplifier load compensation |
| 06/07/2011 | US7956684 Class-G radio frequency power amplifier |
| 06/07/2011 | US7956681 Class D amplifier having PWM circuit with look-up table |
| 06/07/2011 | US7956314 Microwave switching element |
| 06/07/2011 | CA2474492C Solid state transmitter circuit |
| 06/03/2011 | WO2011064787A1 Pop-up noise reduction in a device |
| 06/03/2011 | WO2011064786A1 Adaptive biasing of driver circuit |
| 06/03/2011 | WO2011064306A1 Parallel correction amplifier |
| 06/03/2011 | WO2011063873A1 Driving method for obtaining a gain linear variation of a transconductance amplifier and corresponding driving circuit |
| 06/03/2011 | WO2011063536A1 Digital charge amplifier and method for converting charge signals into digital signals |
| 06/03/2011 | WO2011021841A3 Multi-amplifier audio module for a multichannel speaker, and multi-amplifier audio module housing assembly for same |
| 06/02/2011 | US20110130109 Differential amplifier circuit and wireless receiving apparatus |
| 06/02/2011 | US20110130106 Power amplification device, and transmission device and communication device both using thereof |
| 06/02/2011 | US20110129224 Amplifier and optical module performing gain control |
| 06/02/2011 | US20110128797 Sense amplifying circuit, and semiconductor memory device having the same |
| 06/02/2011 | US20110128795 Semiconductor memory device having sense amplifier |
| 06/02/2011 | US20110128277 Operational amplifier and liquid crystal drive device using same, as well as parameter setting circuit, semiconductor device, and power supply unit |
| 06/02/2011 | US20110128079 Multi-band power amplifier with high-frequency transformer |
| 06/02/2011 | US20110128077 Differentially compensated amplifier |
| 06/02/2011 | US20110127975 Switching power supply device and semiconductor integrated circuit |
| 06/01/2011 | EP2327157A1 Level shifter |
| 06/01/2011 | EP2327153A1 Auto-correction feedback loop for offset and ripple suppression in a chopper-stabilized amplifier |
| 06/01/2011 | EP2327152A1 High-linearity low-noise receiver with load switching |
| 06/01/2011 | CN201854245U Class inverse F power amplifier based on three fourths spiral virtual earth structure |
| 06/01/2011 | CN201854244U Novel power amplifier |
| 06/01/2011 | CN1866728B Digital amplifier, pulse width modulator thereof and method for reducing pop noise for the same |
| 06/01/2011 | CN102084589A Method of achieving high selectivity in receiver RF front-ends |
| 06/01/2011 | CN102082554A Switched capacitor amplifier and switch control method thereof |
| 06/01/2011 | CN102082553A Integrator of differential input |
| 06/01/2011 | CN102082552A Driver with controlled slope |
| 06/01/2011 | CN102082551A Audio-frequency playback system of parametric acoustic array and modulating method thereof |
| 06/01/2011 | CN101540588B Class d audio amplifier |
| 06/01/2011 | CN101534098B Integrator of lower-gain switch capacitance with non-sensitive parasitic effect and lower power consumption |
| 06/01/2011 | CN101471630B Whole differential amplifier |
| 06/01/2011 | CN101459412B Full scale input-output operational amplifier |
| 06/01/2011 | CN101188404B Power amplifier using power synthesizer |
| 05/31/2011 | US7953997 Power amplifier |
| 05/31/2011 | US7952553 Amplifier circuits in which compensation capacitors can be cross-connected so that the voltage level at an output node can be reset to about one-half a difference between a power voltage level and a common reference voltage level and methods of operating the same |
| 05/31/2011 | US7952434 Semiconductor device |
| 05/31/2011 | US7952433 Power amplifiers with discrete power control |
| 05/31/2011 | US7952430 Amplifier circuit, integrated circuit and radio frequency communication unit |
| 05/31/2011 | US7952429 Multiple-input and multiple-output amplifier having pseudo-differential inputs |
| 05/31/2011 | US7952428 Dynamically adjustable low noise, low power instrumentation amplifier |
| 05/31/2011 | US7952427 Signal amplifier circuit and optical receiver |
| 05/31/2011 | US7952426 Digital audio amplifier and digital audio amplifying method therefor |
| 05/26/2011 | WO2011063358A2 Forward link signaling within a wireless power system |
| 05/26/2011 | WO2011063095A1 Analog bias control for packet communication systems |
| 05/26/2011 | WO2011062604A1 Systems and methods for offset cancellation method for dc-coupled audio drives |
| 05/26/2011 | WO2011062039A1 Amplification device |
| 05/26/2011 | WO2011061965A1 Visible light receiver circuit |
| 05/26/2011 | WO2011061025A1 Amplifier assembly having controlled return of power loss |
| 05/26/2011 | US20110123049 Systems and Methods for Offset Cancellation Method for DC-Coupled Audio Drivers |
| 05/26/2011 | US20110123040 Dynamic switchable mode dual bridge power amplifier |
| 05/26/2011 | US20110121903 Power amplifier |
| 05/26/2011 | US20110121902 Enhancing dual op-amps for differential connections |
| 05/26/2011 | US20110121901 Constant gain amplifier system with gain control feedback |
| 05/26/2011 | US20110121900 Method and system for improving limiting amplifier phase noise for low slew-rate input signals |
| 05/26/2011 | US20110121896 Logarithmic mean-square power detector with servo control loop |
| 05/26/2011 | US20110121871 Current converting method, transconductance amplifier and filter circuit using the same |
| 05/26/2011 | US20110121863 Sense amplifier for low voltage high speed sensing |
| 05/26/2011 | DE202011004540U1 Röhren-Verstärker Tubeamp |