| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 01/01/2008 | US7315206 Travelling-wave amplifier |
| 01/01/2008 | US7315205 Multiple power mode amplifier with bias modulation option and without bypass switches |
| 01/01/2008 | US7315204 Class AB-D audio power amplifier |
| 12/27/2007 | WO2007149257A2 Control of an adjustable gain amplifier |
| 12/27/2007 | WO2007149028A1 Transmitter with pre-conditioning of amplifier signal |
| 12/27/2007 | WO2007148753A1 Transmission circuit and communication device |
| 12/27/2007 | WO2007147240A1 Integrated implementation of a voltage boost follower and method therefor |
| 12/27/2007 | WO2007119208A3 Doherty amplifier |
| 12/27/2007 | WO2007117189A8 A method for compensating signal distortions in composite amplifiers |
| 12/27/2007 | US20070296502 Method For Double Sampling Loop Negative Feedback And Double Sampling Negative Feedback Amplifier |
| 12/27/2007 | US20070296495 Distortion compensating apparatus |
| 12/27/2007 | US20070296494 Predistorter |
| 12/27/2007 | US20070296493 Enhanced digital predistortion |
| 12/27/2007 | CA2653469A1 Transmitter with intelligent pre-conditioning of amplifier signal |
| 12/26/2007 | EP1871005A1 In-line distortion cancellation circuits for linearization of electronic and optical signals with phase and frequency adjustment |
| 12/26/2007 | EP1871004A1 Multiband doherty amplifier |
| 12/26/2007 | EP1870730A2 Automotive radar systems and techniques |
| 12/26/2007 | EP1870729A2 Automotive radar systems and techniques |
| 12/26/2007 | EP1870728A2 Automotive radar systems and techniques |
| 12/26/2007 | EP1869777A2 Radio frequency power amplifier and corresponding method |
| 12/26/2007 | EP1869769A4 Improved radio frequency digital-to-analog converter |
| 12/26/2007 | EP1869769A2 Improved radio frequency digital-to-analog converter |
| 12/26/2007 | EP1869762A1 Rf power amplifier system employing an analog predistortion module using zero crossings |
| 12/26/2007 | CN101095285A Direct current offset correction systems and methods |
| 12/26/2007 | CN101095280A Multi-state load switched power amplifier for polar modulation transmitter |
| 12/26/2007 | CN101093980A In-line distortion cancellation circuits for linearization of electronic and optical signals with phase and frequency adjustment |
| 12/26/2007 | CN101093979A Cascode-connected amplifier circuit, semiconductor integrated circuit using same, and receiving apparatus using same |
| 12/26/2007 | CN101093978A Multiband doherty amplifier |
| 12/26/2007 | CN101093977A True logarithm amplifier |
| 12/25/2007 | USRE39949 Sound intermediate frequency amplifier for a broadcast receiver |
| 12/25/2007 | US7313370 Intermodulation product cancellation in communications |
| 12/25/2007 | US7313244 Circuit and method for eliminating pop noise in digital audio amplifier using dual power supply |
| 12/25/2007 | US7313199 Power amplifier linearization |
| 12/25/2007 | US7313175 Method for avoiding interference radiation of AM transmitters used in digital transmission |
| 12/25/2007 | US7312656 Adaptive predistortion for a transmit system with gain, phase and delay adjustments |
| 12/21/2007 | WO2007144958A1 Power amplifier control device, power amplifier control program, and power amplifier control method |
| 12/21/2007 | WO2007144957A1 Power amplifier control device, power amplifier control program, and power amplifier control method |
| 12/20/2007 | US20070291873 Transmitter Apparatus and Wireless Communication Apparatus |
| 12/20/2007 | US20070290761 Signal amplifier circuit |
| 12/20/2007 | US20070290757 Input system for a variable gain amplifier having class-ab transconductance stages |
| 12/20/2007 | US20070290749 Systems, Methods, and Apparatuses for Multi-Path Orthogonal Recursive Predistortion |
| 12/20/2007 | US20070290748 Systems, Methods, and Apparatuses for Linear Envelope Elimination and Restoration Transmitters |
| 12/20/2007 | US20070290746 Control of an adjustable gain amplifier |
| 12/20/2007 | US20070290745 Low-noise amplifiers |
| 12/20/2007 | US20070290744 Radio frequency switching circuit, radio frequency switching device, and transmitter module device |
| 12/20/2007 | US20070290743 Circuit and method for controlling the power mode a class-d amplifier |
| 12/20/2007 | US20070290742 Method For Controlling A Linear Power Amplifier |
| 12/20/2007 | US20070290741 Technique to improve the gain and signal to noise ratio in cmos switched capacitor amplifiers |
| 12/20/2007 | DE102006028093A1 Amplifier arrangement for micro electro mechanical system application, has input stage with transistor e.g. n-channel FET, connected with input, and feedback path connecting output of output stage with transistor |
| 12/19/2007 | EP1867275A2 Methods, systems, and associated implantable devices for dynamic monitoring of tumors |
| 12/19/2007 | EP1867120A2 Feed forward amplifier system and method using the pilot frequency from a positive feedback pilot generation and detection circuit to improve second loop convergence |
| 12/19/2007 | EP1867039A1 An electrical circuit, a detection system and an operating method thereof |
| 12/19/2007 | EP1405089B1 Distortion detector |
| 12/19/2007 | EP1327301B1 Amplification circuit with improved linearity |
| 12/19/2007 | EP1293037B1 Silent start |
| 12/19/2007 | CN200994121Y Dual-circuit AV and HIFI front-rear stage integrated power amplifier |
| 12/19/2007 | CN200994120Y Multi-circuit high fidelity front-rear stage integrated power amplifier |
| 12/19/2007 | CN200994119Y Grid voltage adaptive compensating device |
| 12/19/2007 | CN101091306A Transformer circuit |
| 12/19/2007 | CN101090256A High-impedance level-shifting amplifier |
| 12/19/2007 | CN100356689C Pulse amplitude modulating method and circuit for improving D class audio amplifier property |
| 12/18/2007 | US7310593 Sampling apparatus and method for determining the driving state of a vehicle |
| 12/18/2007 | US7310016 Chopper-stabilized operational amplifier and method |
| 12/13/2007 | WO2007142568A1 High efficiency linear power amplifiers with load compensation |
| 12/13/2007 | WO2007142414A1 Doherty power amplifier |
| 12/13/2007 | WO2007141908A1 Distortion compensator apparatus, amplifier appratus, transmitter, and method of compensating distortion |
| 12/13/2007 | WO2007121112A3 Systems, methods and devices for dual closed loop modulation controller for nonlinear rf amplifier |
| 12/13/2007 | WO2006110360A3 Feed forward amplifier with detection circuit to improve second loop convergence |
| 12/13/2007 | US20070286307 Distortion Compensating Apparatus |
| 12/13/2007 | US20070285855 Composite integrated semiconductor device |
| 12/13/2007 | US20070285162 Highly linear Low-noise amplifiers |
| 12/13/2007 | US20070285161 Method and apparatus for amplifying a signal modulated in amplitude |
| 12/13/2007 | DE102006026803A1 Protective circuit for e.g. sensitive microphone preamplifier, has two zener diodes attached to input stage over other four zener diodes, capacitors arranged parallel to two diodes, and resistors arranged between four diodes and capacitors |
| 12/12/2007 | EP1865597A1 Amplifier apparatus |
| 12/12/2007 | EP1864553A1 Offset correction circuit for voltage-controlled current source |
| 12/12/2007 | EP1665522B1 Digital predistortion for power amplifier |
| 12/12/2007 | EP1609241B1 Systems and methods for implementing a sample rate converter using hardware and software to maximize speed and flexibility |
| 12/12/2007 | EP1435160B1 Method for reducing transmissions in boundary zones, in amplitude modulation transmitters operating in digital mode |
| 12/12/2007 | EP1325555B1 Configurable power amplifier and bias control |
| 12/12/2007 | EP1317063B1 High-frequency amplifier |
| 12/12/2007 | EP1192712B1 Offset and non-linearity compensated amplifier and method |
| 12/12/2007 | CN200990584Y Gain stepping CMOS low-noise amplified circuit with large dynamic range |
| 12/12/2007 | CN101088214A Generation of modulated RF signals |
| 12/12/2007 | CN100355203C High-frequency amplifier and high-frequency mixer |
| 12/12/2007 | CN100355193C 半导体集成电路器件 The semiconductor integrated circuit device |
| 12/11/2007 | US7308234 Feedforward spur cancellation approach using low IP amplifier |
| 12/11/2007 | US7307479 Handset radiofrequency front end module in fine pitch quad flat no lead (FQFP-N) package |
| 12/11/2007 | US7307475 RF generator with voltage regulator |
| 12/11/2007 | US7307473 Distortion compensating and power amplifying apparatus |
| 12/11/2007 | US7307463 Source follower, voltage follower, and semiconductor device |
| 12/06/2007 | US20070280375 Pulse shaping which compensates for component distortion |
| 12/06/2007 | US20070280374 Modulation circuit device, modulation method and radio communication device |
| 12/06/2007 | US20070279130 High speed amplifier with controllable amplification and output impedance and comparator using the same |
| 12/06/2007 | US20070279101 Signal Output Circuit, Audio Signal Output Apparatus Using The Same, And Electronic Device |
| 12/06/2007 | DE102007008921A1 Biasschaltung für Leistungsverstärker mit geringer Verschlechterung der Verzerrungseigenschaften Bias circuit for power amplifier with little degradation in distortion characteristics |
| 12/05/2007 | EP1863184A2 Adaptive control apparatus |
| 12/05/2007 | EP1863183A1 Transmitting apparatus, communication device, and mobile wireless unit |
| 12/05/2007 | EP1861923A2 Bias control for reducing amplifier power consumption and maintaining linearity |
| 12/05/2007 | EP1861919A1 Amplifier circuit |
| 12/05/2007 | EP1784914A4 Auxiliary transistor gate bias control system and method |