| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 09/20/2007 | US20070216479 Amplifier turn-on speedup technique |
| 09/20/2007 | US20070216476 Dc offset cancellation circuit and programmable gain amplifier using the same |
| 09/20/2007 | US20070216475 Dynamically accelerated operational amplifier and method thereof |
| 09/19/2007 | EP1835685A1 Subsampling module for measurement of power amplifier AM/AM and AM/PM non-linearity |
| 09/19/2007 | EP1835684A2 Transmitter and method with digital control of a Cartesian feedback loop |
| 09/19/2007 | EP1792197A4 Blind signal separation using spreading codes |
| 09/19/2007 | CN200950575Y 4W multi-carrier power amplifier in TD-SCDMA system base station |
| 09/19/2007 | CN101040502A Wideband enhanced digital injection predistortion system and method |
| 09/19/2007 | CN101039289A Intermodulation signal frequency searching apparatus and positioning method |
| 09/19/2007 | CN101039105A Power amplifier and method for amplifying the power |
| 09/19/2007 | CN101039103A High-efficiency power modulators |
| 09/19/2007 | CN100338877C 电子电路 Electronic circuit |
| 09/18/2007 | US7271663 Operational amplifier output stage and method |
| 09/18/2007 | US7271660 Selectively adding auxiliary frequency compensation depending on the behaviour of an output transistor of a rail-to-rail operational amplifier |
| 09/18/2007 | US7271659 High speed amplifier incorporating pre-emphasis |
| 09/18/2007 | US7271658 Electric component for high frequency power amplifier |
| 09/18/2007 | US7271656 Sliding bias circuit for enabling dynamic control of quiescent current in a linear power amplifier |
| 09/18/2007 | US7271649 DC offset calibration apparatus |
| 09/18/2007 | US7271504 Power-on reset semiconductor and method of controlling power supply voltage |
| 09/13/2007 | WO2007103401A1 Apparatus for and method of biasing a transistor |
| 09/13/2007 | WO2007102343A1 Polar coordinate modulation device |
| 09/13/2007 | WO2007102246A1 Amplifier circuit |
| 09/13/2007 | WO2007102236A1 Optical transmission circuit |
| 09/13/2007 | US20070213027 Integrated low noise amplifier |
| 09/13/2007 | US20070210864 Signal amplifier |
| 09/13/2007 | US20070210863 Multi-channel amplifier with reduced overall power emission, and circuit management including same |
| 09/13/2007 | US20070210860 Method and device for performing offset cancellation in an amplifier using floating-gate transistors |
| 09/13/2007 | US20070210771 High efficiency variable voltage supply |
| 09/13/2007 | DE10208483B4 Puls-Echo-Gerät mit Verstärkereinrichtung mit wählbarer aktiver oder passiver Betriebsweise Pulse-echo device with amplifier device with selectable active or passive mode |
| 09/13/2007 | DE102005030049B4 Treiberschaltung für eine Telefonleitung A drive circuit for a telephone line |
| 09/13/2007 | DE102004001668B4 Elektronischer Schaltkreis mit einer Schaltungsanordnung zum Bestimmen und Auswerten der Betriebstemperatur An electronic circuit having a circuit arrangement for determining and evaluating of the operating temperature |
| 09/12/2007 | EP1833214A1 A method and system for out of band predistortion linearization |
| 09/12/2007 | EP1833161A1 Adaptive linear amplifier |
| 09/12/2007 | EP1831992A1 Power control system for a wireless communication unit |
| 09/12/2007 | EP1831991A1 Intelligent rf power control for wireless modem devices |
| 09/12/2007 | EP1831990A1 Load mismatch adaptation in coupler-based amplifiers |
| 09/12/2007 | EP1792366A4 Blind signal separation using array deflection |
| 09/12/2007 | EP1632073B1 Method and system for producing a two-level pulse width modulated signal |
| 09/12/2007 | EP1427100B1 Preamplification circuit |
| 09/12/2007 | CN200947589Y Circuit for eliminating dynamic open circuit of capacitor in audio amplifying circuit |
| 09/12/2007 | CN101036290A 运算放大器 Operational Amplifier |
| 09/12/2007 | CN101036289A Tunable predistorter |
| 09/12/2007 | CN101036288A Dual bias control circuit |
| 09/12/2007 | CN101034875A Class d audio amplifier with PWM and feedback |
| 09/12/2007 | CN101034874A Adaptive linear amplifier |
| 09/12/2007 | CN101034873A Lower voltage conductor-spanning amplifier capable of improving the linearity and input range |
| 09/12/2007 | CN101034872A Method and system for improving the power amplifier linearity |
| 09/12/2007 | CN101034871A Power circuit of field effect tube microwave amplifier |
| 09/12/2007 | CN100337409C Linear power amplification distortion counteracting method |
| 09/12/2007 | CN100337397C Rf功率放大器电路 Rf power amplifier circuit |
| 09/11/2007 | US7269463 Plant operating apparatus and method |
| 09/11/2007 | US7269392 Electric component for communication device and semiconductor device for switching transmission and reception |
| 09/11/2007 | US7269254 Integrated driver circuitry |
| 09/11/2007 | US7269232 Device for producing a phase and amplitude modulated radio frequency signal |
| 09/11/2007 | US7269231 System and method for predistorting a signal using current and past signal samples |
| 09/11/2007 | US7268628 Preamplifier |
| 09/11/2007 | US7268620 Pre-distortion of non-linear devices |
| 09/11/2007 | US7268619 Amplifier pre-distorter method and apparatus |
| 09/11/2007 | US7268618 Power amplifiers |
| 09/11/2007 | US7268592 Input/output buffer for protecting a circuit from signals received from external devices |
| 09/07/2007 | WO2007100334A1 Class-d amplifier and method therefor |
| 09/07/2007 | WO2007099622A1 Amplifier circuit |
| 09/07/2007 | WO2007099621A1 Communication apparatus |
| 09/07/2007 | WO2007098766A1 Digital self-oscillating modulator |
| 09/06/2007 | US20070207748 Antenna interface unit |
| 09/06/2007 | US20070206395 Class E Amplifier With Inductive Clamp |
| 09/06/2007 | US20070205828 Switched mode power amplifier using lumped element impedance inverter for parallel combining |
| 09/06/2007 | US20070205827 Doherty Amplifier |
| 09/06/2007 | DE112005002490T5 Verstärkervorrichtung und -verfahren Amplifier apparatus and method |
| 09/06/2007 | DE112004002875T5 Temperaturkompensierte Vorspannungsschaltung für einen Leistungsverstärker A temperature-compensated bias circuit for a power amplifier |
| 09/05/2007 | EP1830479A1 A signal nonlinear distortion magnitude detection method and device |
| 09/05/2007 | EP1830464A1 Digital self-oscillating modulator |
| 09/05/2007 | EP1829207A1 Amplifier circuit |
| 09/05/2007 | EP1829206A1 Generation of modulated radio frequency signals |
| 09/05/2007 | EP1829205A1 Power amplifier system |
| 09/05/2007 | EP1792367A4 Blind signal separation using i and q components |
| 09/05/2007 | CN200944577Y Signal gain amplifying system |
| 09/05/2007 | CN101032093A Signal configuration based transmitter adjustment in wireless communication devices |
| 09/05/2007 | CN101032079A A/d变换器 A / d converter |
| 09/05/2007 | CN101030760A Self-adaptive grid-voltage compensator and its compensation |
| 09/05/2007 | CN101030759A Ultra-low noise amplifier |
| 09/04/2007 | US7266159 Frequency-dependent magnitude pre-distortion on non-baseband input signals for reducing spurious emissions in communication networks |
| 09/04/2007 | US7265643 Tunable isolator |
| 09/04/2007 | US7265630 Millimeter-wave unilateral low-noise amplifier |
| 09/04/2007 | US7265627 Self adaptable bias circuit for enabling dynamic control of quiescent current in a linear power amplifier |
| 09/04/2007 | US7265618 RF power amplifier having high power-added efficiency |
| 09/04/2007 | US7265616 Charge amplifier |
| 09/04/2007 | US7265614 Amplifier circuit with reduced power-off transients and method thereof |
| 09/04/2007 | US7265611 Self zeroing for critical, continuous-time applications |
| 09/04/2007 | US7265582 Level shifter |
| 08/30/2007 | WO2007097756A1 Tunable filters having variable bandwidth and variable delay |
| 08/30/2007 | WO2007096940A1 Semiconductor circuit |
| 08/30/2007 | US20070200632 Regulated cascode circuits and CMOS analog circuits include the same |
| 08/30/2007 | US20070200631 Amplifier circuit improved in linearity and frequency band |
| 08/30/2007 | US20070200626 Power Supply Compensation |
| 08/30/2007 | US20070200625 Distortion compensating apparatus and method |
| 08/30/2007 | US20070200621 Pwm digital amplifier with high-order loop filter |
| 08/30/2007 | US20070200620 Offset cancellation amplifier, display employing the offset cancellation amplifier and method for controlling the offset cancellation amplifier |
| 08/30/2007 | US20070200619 Preamplifier circuits and methods of calibrating an offset in the same |
| 08/30/2007 | DE102006006568A1 Verstärkereinrichtung Amplifier device |