| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 03/29/2012 | US20120075020 Network communication device and method for detecting abnormal load |
| 03/29/2012 | US20120075019 Pa load-line tuning with capacitors around a balun |
| 03/29/2012 | US20120075016 Calibrate output matching for correct output power |
| 03/29/2012 | US20120075015 Amplifier and method for linearizing same |
| 03/29/2012 | DE112004001202B4 FET-Verstärker, Pulsmodulationsmodul und Radarvorrichtung FET amplifier, pulse modulation module and radar apparatus |
| 03/29/2012 | DE10345100B4 Differenzverstärkeranordnung Differential amplifier configuration |
| 03/29/2012 | DE10252146B4 Verfahren zum Erzeugen einer hochfrequenten Wechselspannung sowie Hochfrequenz-Leistungsverstärker dafür A method for generating a high-frequency alternating voltage and high-frequency power amplifier for |
| 03/29/2012 | DE10134874B4 Leitungstreiber Line Drivers |
| 03/28/2012 | EP2434642A1 Transimpedance amplifier, integrated circuit, and system |
| 03/28/2012 | EP2433368A1 Adaptive parametric power amplifier protection circuit |
| 03/28/2012 | EP2433363A1 Output circuit with integrated impedance matching, power combining and filtering for power amplifiers and other circuits |
| 03/28/2012 | EP2433360A1 Transmitter with quantization noise compensation |
| 03/28/2012 | EP2403135A9 Power amplifier for mobile telecommunications |
| 03/28/2012 | EP1872473B1 A method for voltage modulation |
| 03/28/2012 | EP1716636B1 Electrical apparatus and cooling system |
| 03/28/2012 | CN202178739U 一种高稳定性射频功率放大器单片集成电路 A highly stable RF power amplifier monolithic integrated circuit |
| 03/28/2012 | CN102396152A Low noise amplifier with combined input matching, balun, and transmit/receive switch |
| 03/28/2012 | CN102394847A System for using complex number QR-recursive least square (RLS) algorithm to complete digital pre-distortion (DPD) function and method thereof |
| 03/28/2012 | CN102394573A Bypass circuit of low noise amplifier |
| 03/28/2012 | CN102394572A High-linearity low noise amplifier and design method thereof |
| 03/28/2012 | CN102394571A In-chip integrated low noise amplifier |
| 03/28/2012 | CN102394570A Monolithic integrated narrow pulse peak holding circuit |
| 03/28/2012 | CN102394569A Efficient Doherty power amplifier |
| 03/28/2012 | CN101777876B Logarithmic amplifier |
| 03/28/2012 | CN101563842B True current limiting (tcl) |
| 03/28/2012 | CN101536306B Notch filter for ripple reduction in chopper stabilized amplifiers |
| 03/28/2012 | CN101512895B Amplifier architecture for polar modulation |
| 03/28/2012 | CN101494439B Amplifier |
| 03/28/2012 | CN101427459B Method and arrangement for optimizing efficiency of a power amplifier |
| 03/28/2012 | CN101366173B Power amplifier and its idling current setting circuit |
| 03/28/2012 | CN101015119B System and method for current-mode amplitude modulation |
| 03/27/2012 | US8143950 Power amplifier break down characteristic |
| 03/27/2012 | US8143943 System and a method for signal processing |
| 03/22/2012 | WO2012035713A1 Class d amplifier and wireless communication device |
| 03/22/2012 | WO2012034161A1 A signal processing device for use in electroencephalography and a cable system incorporating the device |
| 03/22/2012 | US20120071126 Communication Transceiver Having a Three-Line Balun With Power Amplifier Bias |
| 03/22/2012 | US20120069881 Broadband power amplifier |
| 03/22/2012 | US20120068768 Transmission apparatus and distortion compensation method |
| 03/22/2012 | US20120068766 Sample-and-hold amplifier |
| 03/22/2012 | US20120068765 Method for Offset Compensation of a Switched-Capacitor Amplifier and Switched Capacitor Amplifier Arrangement |
| 03/22/2012 | DE102004019052B4 Verfahren und Schaltungsanordnung zur Linearisierung des Auslenkungsverhaltens bei der dynamischen oder statischen Ansteuerung eines Piezoaktors, umfassend einen Treiberanschluss, einen Verstärker, insbesondere invertierenden Operationsverstärker, sowie einen Gegen- oder Rückkopplungszweig Method and circuit for linearizing the Auslenkungsverhaltens in the dynamic or static control of a piezoelectric actuator comprising a drive terminal, an amplifier, in particular inverting operational amplifier, and a counter or feedback branch |
| 03/21/2012 | EP2432121A1 Broadband power amplifier |
| 03/21/2012 | EP2432120A1 Amplifying device |
| 03/21/2012 | EP2432119A1 Class d amplification device |
| 03/21/2012 | EP2432118A1 Radio-frequency power amplifier with fast envelope tracking |
| 03/21/2012 | EP2430751A2 Transimpedance amplifier with distributed control of feedback line |
| 03/21/2012 | EP2430750A1 Multi-bit class-d power amplifier system |
| 03/21/2012 | EP2430748A1 Pre-distortion for a radio frequency power amplifier |
| 03/21/2012 | EP2430747A1 A circuit for a transmitter |
| 03/21/2012 | EP2430531A1 Remotely reconfigurable power amplifier system and method |
| 03/21/2012 | EP2067255B1 Method of control slope regulation and control slope regulation apparatus |
| 03/21/2012 | CN202172386U 节省信号线的信号放大器 Saving the signal amplifier the signal line |
| 03/21/2012 | CN102386886A Negative impedance generating circuit and integrated ciruit thereof |
| 03/21/2012 | CN102386860A Amplifying circuit and current-voltage conversion circuit |
| 03/21/2012 | CN102386859A Wide band amplifier with frequency compensation |
| 03/21/2012 | CN102386858A Amplifying circuit |
| 03/21/2012 | CN102386857A Limiting amplifier without direct current restorer |
| 03/21/2012 | CN102386856A LNA circuit for use in a low-cost receiver circuit |
| 03/21/2012 | CN102386855A Low noise amplifier having both ultra-high linearity and low noise characteristic and radio receiver including the same |
| 03/21/2012 | CN102386854A Grid voltage processing method and grid voltage processing device |
| 03/21/2012 | CN102386853A Optical fiber isolating multi-tube serial high-voltage amplifier and application method thereof |
| 03/21/2012 | CN102386852A Method for amplifying digital multi-carrier power and power amplifier for realizing same |
| 03/21/2012 | CN101669281B Amplifier apparatus and control method of doherty amplifying circuit |
| 03/21/2012 | CN101641931B 脉冲宽度调制器 Pulse width modulator |
| 03/21/2012 | CN101299594B Selection circuit |
| 03/21/2012 | CN101166013B Differential amplifier using body-source cross coupling |
| 03/21/2012 | CN101164231B Receiver having a gain-controllable input stage |
| 03/20/2012 | US8139786 Plop noise avoidance for an amplifier |
| 03/20/2012 | US8139053 Arrangement for canceling offset of driver amplifier circuitry |
| 03/20/2012 | US8138839 Wideband CMOS gain stage |
| 03/20/2012 | US8138829 Segmented power amplifier with varying segment activation |
| 03/20/2012 | US8138828 Active mute scheme for an amplifier |
| 03/20/2012 | US8138826 Apparatus and method for complete elimination of input coupling capacitors in signal amplification |
| 03/20/2012 | US8138464 Optical receiving circuit |
| 03/15/2012 | WO2012032736A1 Amplification circuit |
| 03/15/2012 | WO2012031964A1 Method and circuit for processing a signal supplied by a piezoelectric sensor, and pressure-measuring device for piston engine |
| 03/15/2012 | US20120064953 Controller and method for using a dc-dc converter in a mobile handset |
| 03/15/2012 | US20120064836 Amplifier Circuit for a Ranging Transceiver |
| 03/15/2012 | US20120062319 Single-Differential Converting Circuit |
| 03/14/2012 | EP2429075A1 Amplifier circuit for a ranging transceiver |
| 03/14/2012 | EP1867120B1 Feed forward amplifier system and method using the pilot frequency from a positive feedback pilot generation and detection circuit to improve second loop convergence |
| 03/14/2012 | CN202168037U 一种单端输出变压器的推挽放大器系统 A single-ended output transformer push-pull amplifier system |
| 03/14/2012 | CN202168035U 低噪声放大器 Low-noise amplifier |
| 03/14/2012 | CN1976217B Power amplifier with high gain and high efficiency |
| 03/14/2012 | CN102377405A Multiband matching circuit |
| 03/14/2012 | CN102377404A Variable impedance matching circuit |
| 03/14/2012 | CN102377395A Single-channel signal isolating and amplifying device |
| 03/14/2012 | CN102377391A Medium magnetic sensor circuit and signal processing method thereof |
| 03/14/2012 | CN102377390A Method for controlling gain and attenuation of broadband low-noise amplifier |
| 03/14/2012 | CN102377389A Envelope amplifier |
| 03/14/2012 | CN101834570B Signal amplification circuit of sender |
| 03/14/2012 | CN101610070B Preposed amplifier and method for correcting offset voltage of same |
| 03/14/2012 | CN101103606B Improved method and device of clipping of transmission signal |
| 03/13/2012 | US8135145 Multi-level output signal converter |
| 03/13/2012 | US8134385 Split cascode line amplifier for current-mode signal transmission |
| 03/08/2012 | WO2012029210A1 Amplifier |
| 03/08/2012 | WO2012029078A2 Low distortion filters |
| 03/08/2012 | WO2012028000A1 Method and device for processing gate voltage |
| 03/08/2012 | WO2012027982A1 Complementary enhanced power compensating method, apparatus and communication device |
| 03/08/2012 | US20120056676 RF Amplifier with Digital Filter for Polar Transmitter |