Patents
Sitemap › H03 - Basic electronic circuitry › H03F - Amplifiers › H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272)
10/2005
10/27/2005DE19704519B4 Vorrichtung zur Frequenzgangkompensation eines Audiosignals Apparatus for frequency compensation of an audio signal
10/27/2005DE102004018137A1 Protective circuit for high frequency power amplifier has detector circuit with sensor devices that detect reflected HF power from thermal or electrical state parameters of load or coupler, output connected to power amplifier input
10/27/2005DE102004017165A1 Schaltung zur Erhöhung der Transitfrequenz eines Verstärkerelements Circuit for increasing the gain-bandwidth product of an amplifier element
10/26/2005EP1589659A1 Method for generating a pulse signal with a predetermined shape
10/26/2005EP1589657A1 Control circuit of the transconductance of at least one transistor in conduction
10/26/2005EP1588486A2 Method for controlling power for a mobile communications terminal
10/26/2005EP1588484A1 Pulse modulated power converter
10/26/2005EP1474863B1 Biasing arrangement for paralleled transistors
10/26/2005EP1421681A4 Thermally distributed darlington amplifier
10/26/2005EP1346469B1 Triple class e doherty amplifier topology for high efficiency signal transmitters
10/26/2005EP1221195A4 Methods and apparatus for noise shaping a mixed signal power output
10/26/2005CN1689295A Broadband predistortion linearization method and system
10/26/2005CN1689224A Means for limiting an output signal of an amplifier stage
10/26/2005CN1689222A Power amplifier and method for power amplification
10/26/2005CN1689221A Capacitor coupled dynamic bias boosting circuit for a power amplifier
10/26/2005CN1225138C Linear power amplifier rack of mobile communication base station and its switchover method of the type
10/26/2005CN1225082C High frequency power amplifier and power amplifier module utilizing the same
10/25/2005US6959174 Amplifying device
10/25/2005US6958663 In-band group delay equalizer and distortion compensation amplifier
10/25/2005US6958653 Temperature compensated amplifier
10/25/2005US6958649 High-frequency power amplification electronic part and wireless communication system
10/25/2005US6958647 Dual loop feedforward power amplifier
10/25/2005US6958646 Autozeroing floating-gate amplifier
10/25/2005US6958644 Active filter circuit with dynamically modifiable gain
10/25/2005US6958640 Interpolation delay cell for 2ps resolution jitter injector in optical link transceiver
10/20/2005US20050233713 Method and system for compensating for phase variations caused by transmitter activation
10/20/2005US20050233712 Low-frequency signal correction circuit
10/20/2005US20050233701 Systems and methods for adjusting an output driver
10/20/2005US20050232446 Trickle-charged amplifier
10/20/2005US20050232346 Device including an equalizer and an amplification chain for broadband integrated circuit applications
10/20/2005US20050231290 Multi-band low noise amplifier system
10/20/2005US20050231287 Voltage level detector for power amplifier protection control
10/20/2005US20050231286 Power amplifier
10/20/2005US20050231283 Integrated circuit device
10/20/2005US20050231279 Method and apparatus for adaptive digital predistortion using nonlinear and feedback gain parameters
10/20/2005US20050231278 High power doherty amplifier
10/20/2005US20050231277 Amplifier circuit
10/20/2005US20050231274 Low-noise, fast-settling bias circuit and method
10/20/2005US20050231239 Transconductance control circuit for at least one transistor in conduction
10/19/2005EP1586162A1 High efficiency power amplification apparatus with multiple power mode
10/19/2005EP1586161A1 Self adaptable bias circuit for enabling dynamic control of quiescent current in a linear power amplifier
10/19/2005EP1543611A4 Providing dc isolation in switching amplifiers
10/19/2005CN1685622A Method for optimizing an operating point of a power amplifier in a wcdma mobile terminal
10/19/2005CN1685606A Apparatus and method for improving efficiency of power amplifier operating under large peak-to average power ratio
10/19/2005CN1684361A Amplifier circuit
10/19/2005CN1684359A Electric level detector for protection control power amplifier
10/19/2005CN1684358A 带隙参考电路 Bandgap reference circuit
10/19/2005CN1224165C Linear power amplification device with improved structure
10/19/2005CN1223914C 参考电压电路 Reference voltage circuit
10/18/2005US6956439 Transimpedance amplifier with controllable noise reduction
10/18/2005US6956437 Metal-oxide-semiconductor device having integrated bias circuit
10/18/2005US6956434 MOSFET well biasing scheme that mitigates body effect
10/18/2005US6956433 Polynomial predistorter using complex vector multiplication
10/18/2005US6956430 Distortion detector
10/13/2005WO2005096005A1 Measuring circuit for the output of a power amplifier and a power amplifier comprising the measuring circuit
10/13/2005WO2005094537A2 Model based distortion reduction for power amplifiers
10/13/2005WO2005094536A2 Digital linearizing system
10/13/2005US20050228247 Methods, systems, and associated implantable devices for dynamic monitoring of physiological and biological properties of tumors
10/13/2005US20050227644 Constant gain nonlinear envelope tracking high efficiency linear amplifier
10/13/2005US20050227627 Programmable radio transceiver
10/13/2005US20050226443 Method for RIAA correction of audio signal with use of transformer and capacitor
10/13/2005US20050226346 Distortion compensating apparatus
10/13/2005US20050225916 Ultrasound membrane transducer collapse protection system and method
10/13/2005US20050225396 Bias circuit for power amplifier operated as a digital to analog converter
10/13/2005US20050225395 Compensation units for reducing the effects of self-heating and increasing linear performance in bipolar transistors
10/13/2005US20050225388 Direct current offset correction systems and methods
10/13/2005US20050225387 Amplifier
10/13/2005US20050225385 Auxiliary amplifier network
10/13/2005US20050224697 Light-receiving circuit capable of expanding a dynamic range of an optical input
10/13/2005DE102005011392A1 Konstantstromschaltung Constant current circuit
10/13/2005DE102004013217A1 Programmable difference amplifier has first load, first transistor with first controllable extent and first gate connection
10/13/2005CA2560568A1 Digital linearizing system
10/13/2005CA2560281A1 Model based distortion reduction for power amplifiers
10/12/2005EP1585215A1 Bias circuit for power amplifier operated as a digital to analog converter
10/12/2005EP1584136A1 Circuit arrangement for a predistorted feedback coupling from a transmitter to a receiver in a multi-mode mobile telephone
10/12/2005EP1584135A1 Apparatus, methods and articles of manufacture for control in an electromagnetic processor
10/12/2005EP1027769B1 Method and device in a telecommunication system
10/12/2005CN1682444A Integrated circuit with automatic polarity detection and configuration
10/12/2005CN1682440A Preserving linearity of a RF power amplifier
10/12/2005CN1682439A 可变增益放大器 A variable gain amplifier
10/12/2005CN1682438A Push-pull amplifier and frequency conversion circuit
10/12/2005CN1682436A Amplification device
10/12/2005CN1681203A Low distortion and radiation D-type amplifier
10/12/2005CN1681202A Amplifier
10/12/2005CN1681201A Resistance-capacitance balanced feedback negative circuit
10/12/2005CN1681200A Input matching circuit for multiband low noise amplifier
10/12/2005CN1681199A Method and device for amplifying a reception signal
10/12/2005CN1681198A Dynamic bias for RF power amplifiers
10/12/2005CN1223118C Optical transmitter with temperature-compensation function and optical transmission system
10/12/2005CN1223080C Load envelope following amplifier system
10/11/2005US6954722 Methods and systems for data analysis
10/11/2005US6954627 Blind modulation cancellation by addition of modulated signal
10/11/2005US6954621 Method of and apparatus for predistorting a transmit signal
10/11/2005US6954537 Power-off noise suppression circuit and associated methods for an audio amplifier device
10/11/2005US6954108 Fast-response current limiting
10/06/2005WO2005093948A1 Amplifier
10/06/2005WO2005093947A1 Bipolar differential input stage with input bias current cancellation circuit
10/06/2005WO2005093946A1 Preamplifier
10/06/2005WO2005091802A2 System and method for control of loop alignment in adaptive feed forward amplifiers
10/06/2005WO2005060489A8 Linearized trans-impedance amplifier
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