| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 09/17/2002 | US6452449 Gain variable amplifier |
| 09/17/2002 | US6452448 Family of analog amplifier and comparator circuits with body voltage control |
| 09/17/2002 | US6452442 Apparatus for obtaining noise immunity in electrical circuits |
| 09/17/2002 | US6452429 High speed input buffer circuit for low voltage interface |
| 09/17/2002 | US6452424 Method and apparatus for multiple channel signal processing |
| 09/17/2002 | US6452422 Interface circuit and operating method thereof |
| 09/17/2002 | US6452370 Low noise biasing technique |
| 09/17/2002 | CA2261145C Power amplifier |
| 09/12/2002 | WO2002071605A2 Adaptive power amplifier system |
| 09/12/2002 | WO2002071601A2 Preamplifier circuit for a photodetector |
| 09/12/2002 | WO2002071597A2 Circuit arrangement for providing an exponential pre-distortion for an adjustable amplifier |
| 09/12/2002 | WO2002071596A2 High-frequency amplifier circuit having a directly-connected bias circuit |
| 09/12/2002 | US20020127979 Set-up method for a linearising circuit |
| 09/12/2002 | US20020126767 High linearity circuits and methods regarding same |
| 09/12/2002 | US20020126360 Optical transmitter having temperature compensating function and optical transmission system |
| 09/12/2002 | US20020125956 Transistor amplifier providing improved linear and return loss performance characteristics |
| 09/12/2002 | US20020125954 High-frequency amplifier circuit having a directly-connected bias circuit |
| 09/12/2002 | US20020125952 Active common mode feedback for unbalanced input and feedback signals and methods thereof |
| 09/12/2002 | US20020125951 System and method for current splitting for variable gain contol |
| 09/12/2002 | US20020125950 CMOS operational amplifier circuit |
| 09/12/2002 | US20020125946 Miniaturized buffer amplifier and electronic circuit unit using same |
| 09/12/2002 | US20020125944 Adaptive power amplifier system |
| 09/12/2002 | US20020125943 Amplification circuit for electric charge type sensor |
| 09/12/2002 | US20020125941 High efficiency switching amplifiers |
| 09/12/2002 | US20020125924 Frequency multiplier device and frequency multplier circuit |
| 09/12/2002 | US20020125509 Metal oxide semiconductor field effect transistor having a relatively high doped region in the channel for improved linearity |
| 09/11/2002 | EP1239586A1 High-frequency-signal switching circuit suppressing high-frequency-signal distortion |
| 09/11/2002 | EP1239585A1 Differential amplifier |
| 09/11/2002 | EP1238456A2 Improved floating, balanced output circuit |
| 09/11/2002 | EP1238429A1 Power transistor module, power amplifier and method in the fabrication thereof |
| 09/11/2002 | EP0992094B1 A light emitting device and transistor |
| 09/11/2002 | CN1369136A 放大器 Amplifier |
| 09/11/2002 | CN1368792A 电流放大器结构 Current amplifier structure |
| 09/11/2002 | CN1090839C Amplifier circuit and multistage amplifier circuit |
| 09/11/2002 | CN1090838C Inverted amplifying circit |
| 09/10/2002 | US6448860 Device for converting small currents impressed at the input of the device by a non-ideal electric source of current into voltage signals |
| 09/10/2002 | US6448859 High frequency power amplifier having a bipolar transistor |
| 09/10/2002 | US6448857 Audio amplifier controller having soft start circuit protection and associated methods |
| 09/10/2002 | US6448855 Accurate power detection circuit for use in a power amplifier |
| 09/10/2002 | US6448854 Linear transconductance amplifier |
| 09/10/2002 | US6448853 Distortion improvement in amplifiers |
| 09/10/2002 | US6448852 Battery polarity insensitive integrated circuit amplifier |
| 09/10/2002 | US6448851 Amplifier with offset compensation for a high voltage output transistor stage |
| 09/10/2002 | US6448850 Electromagnetic wave amplifier and electromagnetic wave generator |
| 09/10/2002 | US6448848 Method of controlling common-mode in differential gm-C circuits |
| 09/10/2002 | US6448847 Apparatus and method for providing differential-to-single ended conversion and impedance transformation |
| 09/10/2002 | US6448844 CMOS constant current reference circuit |
| 09/10/2002 | US6448839 Circuit for compensating for the difference between the Vgs voltages of two MOS transistors |
| 09/10/2002 | US6448836 Operational amplifier and its offset cancel circuit |
| 09/10/2002 | US6448748 High current and high accuracy linear amplifier |
| 09/06/2002 | WO2002069489A2 An automatic gain control circuit with high linearity and monotonically correlated offset voltage |
| 09/06/2002 | WO2002069486A2 Stability enhanced multistage power amplifier |
| 09/06/2002 | WO2002069403A1 Arrangement and method for impedance matching |
| 09/06/2002 | WO2002027923A3 High-swing transconductance amplifier for charge pump circuit |
| 09/06/2002 | WO2001010013A9 High-efficiency modulating rf amplifier |
| 09/05/2002 | US20020122233 Photoelectric conversion method, light receiving circuit, and optical communication system |
| 09/05/2002 | US20020121935 High power amplifier system having low power consumption and high dynamic range |
| 09/05/2002 | US20020121934 Output stage and method of enhancing output gain |
| 09/05/2002 | US20020121933 Class AB, high speed, input stage with base current compensation for fast settling time |
| 09/05/2002 | US20020121932 Differential amplifier circuit |
| 09/05/2002 | US20020121931 Interface circuit for a differential signal |
| 09/05/2002 | US20020121929 Power-efficient amplifier circuit and process for power-efficient amplification of a signal |
| 09/05/2002 | US20020121919 Low voltage rail-to-rail CMOS output stage |
| 09/05/2002 | US20020121885 High current and high accuracy linear amplifier |
| 09/05/2002 | DE10053955C1 Signal extraction circuit for integrated photodiode uses 2 p-channel MOSFETs and operational amplifier |
| 09/04/2002 | EP1237189A1 Arrangement and method for impedance matching |
| 09/04/2002 | EP1236274A1 Amplifier ctb reduction by phase filtering |
| 09/04/2002 | EP1236273A1 High voltage hybrid circuit |
| 09/04/2002 | CN1367952A Dual-band. dual-mode power amplifier |
| 09/04/2002 | CN1367629A Electric efficiency raising circuit of radio-frequency power amplifier in double-mode mobile telephone |
| 09/04/2002 | CN1367581A Electronic tube inverting amplifier circuit |
| 09/03/2002 | US6446263 Anti-loading CATV interface circuit and method |
| 09/03/2002 | US6445343 Antenna element array alignment system |
| 09/03/2002 | US6445255 Planar dielectric integrated circuit |
| 09/03/2002 | US6445250 Circuit topology for better supply immunity in a cascaded Gm/Gm amplifier |
| 09/03/2002 | US6445248 Low noise amplifier having sequentially interpolated gain stages |
| 09/03/2002 | US6445246 Signal compensator circuit and demodulator circuit |
| 09/03/2002 | US6445034 MOS transistor having first and second channel segments with different widths and lengths |
| 09/03/2002 | US6444970 Miniature low-noise photodiode system |
| 08/29/2002 | WO2002067441A2 Calibration of in-phase and quadrature transmit branches of a transmitter |
| 08/29/2002 | WO2002067417A1 Interface circuit for a differential signal |
| 08/29/2002 | WO2002067416A1 Switching power amplifier, and switching control method of the switching power amplifier |
| 08/29/2002 | WO2002067415A1 Fet band amplifier |
| 08/29/2002 | WO2002067414A1 Fet band amplifier |
| 08/29/2002 | WO2002047254A3 Differential amplifier |
| 08/29/2002 | WO2002043156A3 Hemt and communication system using the same |
| 08/29/2002 | US20020119762 Semiconductor integrated circuit and radio communication apparatus using same |
| 08/29/2002 | US20020118716 Source follower circuit, laser driving apparatus, semiconductor laser apparatus, current-voltage convertion circuit, and light receiving circuit |
| 08/29/2002 | US20020118072 High noise rejection voltage-controlled ring oscillator architecture |
| 08/29/2002 | US20020118068 Stability enhanced multistage power amplifier |
| 08/29/2002 | US20020118067 Analog amplifier circuit |
| 08/29/2002 | US20020118066 Variable phase-shifting rf power amplifiers |
| 08/29/2002 | US20020118064 Method and apparatus for open-loop input offset adjustment in a differential amplifier |
| 08/29/2002 | US20020118063 Differential output amplifier arrangement |
| 08/29/2002 | US20020118061 Method of controlling common-mode in differential gm-c circuits |
| 08/29/2002 | US20020118042 Circuit and method for compensation if high-frequency signal loss on a transmission line |
| 08/29/2002 | DE10106388A1 Schaltung zur Bereitstellung einer exponentiellen Vorverzerrung für einen einstellbaren Verstärker Circuit for producing exponential predistortion for an adjustable amplifier |
| 08/28/2002 | EP1235403A2 Combined frequency and amplitude modulation |
| 08/28/2002 | EP1235345A2 Analog amplifier circuit |
| 08/28/2002 | EP1235344A2 Method for reducing interference in a transmitter |