Patents
Sitemap › H03 - Basic electronic circuitry › H03F - Amplifiers › H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
08/2012
08/29/2012CN101303824B Source line driver and method and display device including the source line driver
08/29/2012CN101277095B Fully differential class AB amplifier and amplifying method using single-ended, two-stage amplifier
08/28/2012US8253526 Termination compensation for differential signals on glass
08/28/2012US8253496 Linear RF power amplifier with frequency-selectable impedance matching
08/28/2012US8253495 Wireless communication device and semiconductor package device having a power amplifier therefor
08/28/2012US8253494 Doherty amplifier with composed transfer characteristic having multiple peak amplifiers
08/28/2012US8253491 Method and apparatus for power converter for class D audio power amplifiers
08/28/2012US8253488 Self-calibrating gain control system
08/28/2012US8253485 Power amplifier
08/28/2012US8253446 Semiconductor device and electronic apparatus using the same
08/23/2012WO2012111583A1 Power series digital predistorter and control method thereof
08/23/2012WO2012111451A1 Method for stabilizing gain/distortion characteristics, and circuit
08/23/2012WO2012111274A1 High frequency power amplifier
08/23/2012WO2012111100A1 Amplification device
08/23/2012WO2012110410A1 Control of cross-over point
08/23/2012WO2012110409A1 Power control
08/23/2012US20120214432 Amplifier circuit, transmitter, and method of controlling amplifier circuit
08/23/2012US20120212292 Modified dynamic load scaling (mdls) technique for implementing high efficiency low power mode operation
08/23/2012US20120212291 High Efficiency Amplification
08/22/2012EP2490332A1 A variable gain amplifier
08/22/2012EP2490331A1 Differential amplifying apparatus
08/22/2012EP2490329A1 Power amplifier and method for operating same
08/22/2012EP2489122A2 Amplifier bias techniques
08/22/2012EP1264394B1 Digital-to-analog interface circuit having adjustable time response
08/22/2012CN202395729U Power amplifier
08/22/2012CN202395728U Broadband high power amplifier
08/22/2012CN102647162A Differential amplifyer
08/22/2012CN102647161A Wideband power amplifier for capacitive load
08/22/2012CN102647160A Transmitter with class E amplifier
08/22/2012CN102647159A Audio power amplifier used for urban rail traffic system
08/22/2012CN102647158A Power amplification system used for urban rail traffic system
08/22/2012CN102647157A Single-ended input differential output type radio frequency low-noise amplifier
08/22/2012CN102064468B Low-voltage self-adaptive optical communication laser driver circuit
08/22/2012CN101931369B Bridge output power supply voltage adaptive variable audio power amplifier
08/22/2012CN101813767B Solid power amplification device for radar transmitter
08/22/2012CN101674056B Power amplifier linearization using RF feedback
08/22/2012CN101471631B Cmos audio operational amplifier
08/21/2012US8248166 Triplet transconductor
08/21/2012US8248165 Amplifier and optical module performing gain control
08/21/2012US8248164 Integrated circuit single ended-to-differential amplifier
08/21/2012US8248163 Saturation protection of a regulated voltage
08/21/2012US8248162 Differential amplifier
08/21/2012US8248161 Wide-band low-noise CMOS amplifier
08/21/2012US8248111 Voltage current converter, differentiation circuit, integration circuit, and filter circuit using the converter, and voltage current conversion method
08/21/2012US8248107 High-speed differential comparator circuitry with accurately adjustable threshold
08/16/2012WO2012109161A2 Apparatus and methods for envelope tracking calibration
08/16/2012US20120207331 Preamplifier circuit and microphone having the same
08/16/2012US20120206207 Amplifiers with depletion and enhancement mode thin film transistors and related methods
08/16/2012US20120206206 Power amplifier with improved bandwidth
08/16/2012US20120206203 Dynamic current boost in class ab amplifier for low distortion
08/16/2012US20120206202 Gain enhancement circuit and method
08/16/2012US20120206201 Semiconductor device
08/16/2012US20120206200 Differential amplifier with de-emphasis
08/16/2012US20120206198 Differential amplifier with duty cycle compensation
08/16/2012US20120206197 Differential amplifying apparatus
08/16/2012DE102008051630B4 Hochfrequenzleistungsverstärker High frequency power amplifier
08/15/2012EP2487790A1 Papr (peak-to-average power ratio) determining apparatus and communication apparatus
08/15/2012EP2487789A2 Offset cancellation in a capacitively coupled amplifier
08/15/2012EP2487783A2 Ultra-high efficiency switching power inverter and power amplifier
08/15/2012EP2486651A1 Pulse width modulation for a switching amplifier
08/15/2012EP2486650A1 Switched active bias control and power-on sequencing circuit for an amplifier
08/15/2012EP2109778B1 Amplification circuit having an integrated test circuit
08/15/2012EP2022138B1 System and method for saturation detection, correction and recovery in a polar transmitter
08/15/2012EP1946442B1 Wideband circuits and methods
08/15/2012CN202385088U Radio frequency transmitting-receiving power amplifier assembly
08/15/2012CN202385060U Error computing amplifier
08/15/2012CN202385059U Two-level operation amplifying and compensating circuit
08/15/2012CN202385058U Circuit structure for realizing dead time self-adaptive control in D-type power amplifier
08/15/2012CN202385057U 80W power amplifier for GSM1800 (Global System for Mobile Communications) repeater station system
08/15/2012CN202385056U Dead time-free circuit structure of digital audio power amplifier
08/15/2012CN102640414A Mixing circuit
08/15/2012CN102638438A Am-pm synchronization unit
08/15/2012CN102638317A Signal loss detection circuit and method and amplifier
08/15/2012CN102638232A Port-reusable operational amplifier for microcontroller
08/15/2012CN102638231A Method for designing fully-customized chip for detection of high-speed weak photoelectric signals
08/15/2012CN102638229A Audio amplification circuit
08/15/2012CN102637721A Compound semiconductor device, method for manufacturing the device and electric device
08/15/2012CN101813761B Underwater acoustic beacon with multiple work modes
08/15/2012CN101589548B Chopper-stabilized instrumentation amplifier and method for impedance measurement
08/15/2012CN101390287B Digital PWM amplifier with simulation-based feedback
08/15/2012CN101136614B Constant current circuit
08/14/2012US8242855 Multi-primary distributed active transformer amplifier power supply and control
08/14/2012US8242847 Method and apparatus for improving amplifier linearity
08/14/2012US8242846 Power amplifier
08/14/2012US8242844 LNA circuit for use in a low-cost receiver circuit
08/14/2012US8242843 Push-pull amplifier circuit and operational amplifier circuit using the same
08/14/2012US8242842 Input common mode circuit
08/14/2012US8242841 Receiver having multi-stage low noise amplifier
08/14/2012US8242838 Amplifier with wide gain range
08/14/2012US8242430 Apparatuses and methods that reduce mismatch errors associated with analog subtractions used for light sensing
08/14/2012US8242429 Ultra-low-power pulse oximeter implemented with an energy-efficient photoreceptor
08/14/2012US8240798 Head drive apparatus of inkjet printer and inkjet printer
08/14/2012CA2580673C Cellular network low noise amplifiers for use with multiple frequencies
08/09/2012WO2012106437A1 Fast envelope system calibration
08/09/2012WO2012105534A1 Power amplification circuit
08/09/2012WO2012105470A1 Terrestrial broadcast wave reception-use antenna device and component of same
08/09/2012WO2012104038A1 Integrated circuit, wireless communication unit and method for providing a power supply
08/09/2012WO2012085540A3 Magnetic bearing drive circuit
08/09/2012US20120200360 Power amplifier with dynamically added supply voltages
08/09/2012US20120200358 Comparator
1 ... 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 ... 441