| 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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| 01/10/2002 | US20020003441 Wide-bandwidth operational amplifier |
| 01/09/2002 | EP1170860A1 Improved multi-carrier receiver for radio telecommunications network |
| 01/09/2002 | EP1170859A2 Distortion compensation method and apparatus |
| 01/09/2002 | EP1170858A2 Linear amplifying equipment |
| 01/09/2002 | EP1169776A1 Biasing arrangement for field effect transistors |
| 01/09/2002 | EP1169775A1 Predistortion generator coupled with an rf amplifier |
| 01/09/2002 | CN1330500A Circuit of effective generating low-power radio frequency signal |
| 01/09/2002 | CN1330458A Active biased network circuir for radio frequency amplifier |
| 01/09/2002 | CN1077746C Output power controller |
| 01/09/2002 | CN1077745C 功率放大器及无线电发射机 Power amplifiers and radio transmitters |
| 01/08/2002 | US6338032 System and method for trimming IC parameters |
| 01/08/2002 | US6337599 Predistortion linearizer for power amplifier |
| 01/08/2002 | US6337591 Circuitry for a high voltage linear current sense IC |
| 01/03/2002 | WO2002001748A2 Improved multi-carrier receiver for a radio telecommunications network |
| 01/03/2002 | WO2002001711A1 Frequency-compensated multistage amplifier arrangement and method for operating a frequency-compensated amplifier arrangement |
| 01/03/2002 | WO2002001710A1 Integrated circuit with an analogue amplifier |
| 01/03/2002 | WO2002001709A2 High-frequency amplifier circuit with negative impedance cancellation |
| 01/03/2002 | WO2001067593A3 Improved method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio |
| 01/03/2002 | WO2001058008A3 Distortion reduction |
| 01/03/2002 | WO2001052403A3 Difference frequency impedance transformation circuits and methods for providing same in power amplifier systems |
| 01/03/2002 | WO2001026222A9 Dynamic closed-loop audio amplifier system |
| 01/03/2002 | WO2000074265A8 Communication device and communication method |
| 01/03/2002 | US20020002038 Mobile communications device power amplifier module and mobile communications device terminal and mobile communications device base station |
| 01/03/2002 | US20020000881 Adaptive distortion-compensation apparatus |
| 01/03/2002 | US20020000879 Audio amplifier system with discrete digital frequency selective damping factor controls |
| 01/03/2002 | US20020000878 Level shifter |
| 01/03/2002 | US20020000877 PWM limiter |
| 01/02/2002 | EP1168898A2 Mobile communications device power amplifier module, mobile communications device terminal equipment and mobile communications device base station |
| 01/02/2002 | EP1168608A2 Matching circuit |
| 01/02/2002 | EP1168604A1 Multistage amplifier |
| 01/02/2002 | EP1168601A2 Adaptive distortion-compensation apparatus |
| 01/02/2002 | EP1168600A2 Circuit and method for attenuating and reducing of undesired properties of an operational amplifier |
| 01/02/2002 | EP1168599A2 High dynamic range low noise amplifier |
| 01/02/2002 | EP1166473A1 Predistortion arrangement using mixers in nonlinear electro-optical applications |
| 01/02/2002 | EP1166439A1 Power amplifier unit |
| 01/02/2002 | EP1166438A1 Class d digital amplifier |
| 01/02/2002 | EP1166437A1 Power efficient line driver |
| 01/02/2002 | EP1166436A1 Non-linear distortion generator |
| 01/02/2002 | EP1166435A1 Non-linear distortion generator |
| 01/02/2002 | EP1166434A1 Non-linear distortion generator for both second and third order distortion |
| 01/02/2002 | EP1166433A1 Signal processing |
| 01/02/2002 | EP1166192A1 Bandgap voltage reference source |
| 01/02/2002 | CN1329778A Transmission final stage for mobile telephone |
| 01/02/2002 | CN1329774A Impedance matching networks of non-linear circuits |
| 01/02/2002 | CN1329773A Amplitude modulation o phase modulation cancellation method in an RF amplifier |
| 01/02/2002 | CN1329772A Constant gain, constant phase radio-frequency power assembly |
| 01/02/2002 | CN1329454A Power amplifying circuit for communication device |
| 01/01/2002 | US6336032 Method and device for phase regulation |
| 01/01/2002 | US6335767 Broadcast transmission system with distributed correction |
| 01/01/2002 | US6335661 Balanced input for temperature sensor |
| 01/01/2002 | US6335660 Pre/post-distortion circuit and method, particularly for microwave radio-frequency systems |
| 01/01/2002 | US6335657 MOSFET amplifier circuit |
| 01/01/2002 | CA2274996C Feed-forward amplifier |
| 01/01/2002 | CA2220922C Automatic predistortion adjusting circuit having stable non-linear characteristics regardless of input signal frequency |
| 12/27/2001 | WO2001099439A2 Adaptive equalisation, in particular for linc processing |
| 12/27/2001 | WO2001099316A1 Multi-carrier amplifier |
| 12/27/2001 | WO2001099298A1 A radio frequency (rf) transceiver |
| 12/27/2001 | WO2001099275A1 Signal modulation |
| 12/27/2001 | WO2001099274A2 Audio amplifier power and temperature controller having network detecting and associated methods |
| 12/27/2001 | WO2001099273A1 Dual bridge amplifier |
| 12/27/2001 | WO2001099272A1 Base bias circuit, and power amplifier using the base bias circuit |
| 12/27/2001 | WO2001099271A2 Management of internal signal levels and control of the net gain for a linc amplifier |
| 12/27/2001 | US20010054974 Low noise wideband digital predistortion amplifier |
| 12/27/2001 | US20010054937 Matching circuit |
| 12/27/2001 | US20010054934 Active bias network circuit for radio frequency amplifier |
| 12/27/2001 | US20010054933 High frequency amplifier bias circuit, high frequency power amplifier, and communication device |
| 12/27/2001 | US20010054932 Amplifier apparatus |
| 12/27/2001 | US20010054931 Method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio |
| 12/27/2001 | US20010054930 Circuit and method for attenuating or eliminating undesired properties of an operational amplifier |
| 12/27/2001 | US20010054927 Non-linear distortion generator |
| 12/26/2001 | CN1076903C Efficient linear power amplification |
| 12/25/2001 | US6333677 Linear power amplifier bias circuit |
| 12/25/2001 | US6333676 Control method and control arrangement |
| 12/25/2001 | US6333675 Variable gain amplifier with gain control voltage branch circuit |
| 12/25/2001 | US6333674 Feedback stabilization apparatus and methods |
| 12/25/2001 | US6333571 MOS integrated circuit device operating with low power consumption |
| 12/20/2001 | WO2001097374A1 Amplifier circuit |
| 12/20/2001 | WO2001097328A1 Techniques for enhancing gain in a quasi-optic grid array |
| 12/20/2001 | WO2001097322A1 Mode translating waveguide adapter for a quasi-optic grid array |
| 12/20/2001 | WO2001097259A2 Method for controlling bias in an active grid array |
| 12/20/2001 | WO2001097102A2 Method for automatically releasing and placing an order |
| 12/20/2001 | US20010053676 Power amplification circuit for communication device |
| 12/20/2001 | US20010052821 Semiconductor circuit with a stabilized gain slope |
| 12/20/2001 | US20010052820 High frequency power amplifier having a bipolar transistor |
| 12/20/2001 | US20010052817 Power booster method and apparatus for improving the performance of radio frequency linear power amplifiers |
| 12/20/2001 | US20010052816 Power amplifier having predistortion linearizer |
| 12/20/2001 | US20010052815 Noise reduction scheme for operational amplifiers |
| 12/20/2001 | US20010052814 Hybridized, high performance PWM amplifier |
| 12/19/2001 | EP1164695A1 Circuit for detecting distortion in an amplifier, in particular an audio amplifier |
| 12/19/2001 | EP1164694A2 Microwave amplifier |
| 12/19/2001 | EP1164693A2 Amplifier apparatus |
| 12/19/2001 | EP1164516A1 Method for automatic order processing |
| 12/19/2001 | EP1163728A1 Radio transmitters |
| 12/19/2001 | CN1327348A Cell powered mobile phone with, radio frequency power amplifier for radio communication system |
| 12/19/2001 | CN1327303A Method for improving stability of operation amplifier circuit under determined frequency |
| 12/19/2001 | CN1327238A Equipmental readant method of resistance cross point storage unit array |
| 12/18/2001 | US6331921 Magneto-resistive head read amplifier |
| 12/18/2001 | US6331799 Bias circuit for control input of power transistor |
| 12/18/2001 | CA2276311C Combined linear power amplifying device and method |
| 12/18/2001 | CA2254229C Improved pilot detection for a control system that reduces distortion produced by electrical circuits |