| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 11/21/2002 | US20020171465 Level shift circuit |
| 11/21/2002 | US20020171453 Differential amplifier circuit capable of accurately amplifying even high-speeded signal of small amplitude |
| 11/21/2002 | US20020171403 Dynamic input stage biasing for low quiescent current amplifiers |
| 11/21/2002 | DE10121168A1 Vorrichtung zum Steuern eines Ruhestroms für einen Verstärkertransistor und Verstärkerschaltung An apparatus for controlling a quiescent current for an amplifier transistor and amplifier circuit |
| 11/21/2002 | CA2445463A1 Apparatus for electric to acoustic conversion |
| 11/20/2002 | EP1258985A1 Broadband differential amplifier with compensating device for high frequency gain loss |
| 11/20/2002 | EP1258984A1 Differential amplifier with an unlocking apparatus |
| 11/20/2002 | EP1258983A1 Offset control of an operational amplifier |
| 11/20/2002 | EP1258982A1 Operational amplifier arrangement including a quiescent current control circuit |
| 11/20/2002 | CN2521825Y Digital audio-frequency amplifier |
| 11/20/2002 | CN1381093A Feedforward amplifier |
| 11/20/2002 | CN1381058A Track and hold amplifier |
| 11/20/2002 | CN1380744A Controller of radio-frequency power generator for reducing sensitivity to cable length |
| 11/20/2002 | CN1380743A Off-centre compensation circuit and off-centre compensation method |
| 11/19/2002 | US6483683 Overvoltage protection |
| 11/19/2002 | US6483398 Directional coupler, high frequency circuit module and wireless communication system |
| 11/19/2002 | US6483385 Signal amplification circuit with unequal top and bottom surface areas |
| 11/19/2002 | US6483384 High speed amplifier |
| 11/19/2002 | US6483383 Current controlled CMOS transconductive amplifier arrangement |
| 11/19/2002 | US6483382 Current compensation circuit for improved open-loop gain in an amplifier |
| 11/19/2002 | US6483353 Current sense amplifier circuits containing latches for improving stability and amplification in semiconductor devices |
| 11/19/2002 | US6483168 Integrated circuit having resistor formed over emitter of vertical bipolar transistor |
| 11/14/2002 | WO2002091567A2 Amplifier |
| 11/14/2002 | WO2002091566A1 Dual-band amplifier |
| 11/14/2002 | WO2002091565A2 Signal amplifying method, signal amplifier and devices related therewith |
| 11/14/2002 | US20020168954 Biasing circuit for degenerated differential pair |
| 11/14/2002 | US20020168949 Arrangement and method relating to radio communication |
| 11/14/2002 | US20020168025 Multiple bandwidth amplifier control systems for mobile stations and methods therefor |
| 11/14/2002 | US20020167454 Tunable dipole antenna |
| 11/14/2002 | US20020167451 Tunable waveguide antenna |
| 11/14/2002 | US20020167447 Tunable monopole antenna |
| 11/14/2002 | US20020167358 Power amplifier and communication device including power amplifier |
| 11/14/2002 | US20020167357 Differential amplifier comprising an unlocking device |
| 11/14/2002 | US20020167356 Wideband differential amplifier comprising a high frequency gain-drop compensator device |
| 11/14/2002 | US20020167355 Low-noise gain switching circuit using tapped inductor |
| 11/14/2002 | US20020167354 Digital signal processor enhanced pulse width modulation amplifier |
| 11/14/2002 | US20020167344 Current amplifier structure |
| 11/14/2002 | US20020167333 Differential signal output circuit |
| 11/14/2002 | US20020166947 Photo-detecting semiconductor device and an apparatus having such a photo-detecting semiconductor device |
| 11/14/2002 | DE10132587A1 Transmission device with power control e.g. for RF systems, has output of DAC coupled to modulator for modulating carrier signal with useful signal to be sent |
| 11/14/2002 | DE10119519A1 Demodulator und Sensorvorrichtung Demodulator and sensor device |
| 11/13/2002 | EP1257053A1 Differential signal transfer circuit |
| 11/13/2002 | EP1256179A1 Front end and high frequency receiver having quadrature low noise amplifier |
| 11/13/2002 | EP1256165A1 Low-voltage transconductance amplifier/filters |
| 11/13/2002 | EP0795235B1 n-BIT CONVERTER WITH n-1 MAGNITUDE AMPLIFIERS AND n COMPARATORS |
| 11/13/2002 | EP0706715B1 Electrical charge transfer apparatus |
| 11/13/2002 | CN1379867A Power supply circuit for composite bridge amplifier |
| 11/13/2002 | CN1379545A Signal amplifying apparatus |
| 11/13/2002 | CN1379544A Frequency conversion circuit |
| 11/12/2002 | US6480705 Distortion compensation method and wireless communication apparatus |
| 11/12/2002 | US6480465 AM transmitter having feed-forward correction to compensate for source impedance |
| 11/12/2002 | US6480178 Amplifier circuit and liquid-crystal display unit using the same |
| 11/12/2002 | US6480069 Active load circuit, and operational amplifier and comparator having the same |
| 11/12/2002 | US6480066 Amplifiers |
| 11/12/2002 | US6480065 CMOS folding amplifier having high resolution and low power consumption |
| 11/12/2002 | US6480064 Method and apparatus for an efficient low voltage switchable Gm cell |
| 11/12/2002 | US6480062 Reflection amplifier circuit |
| 11/12/2002 | US6480058 Differential pair with controlled degeneration |
| 11/12/2002 | US6480042 Current-to-voltage converting circuit, optical pickup head apparatus, and apparatus and method for recording/reproducing data |
| 11/12/2002 | US6480038 Bipolar comparator |
| 11/12/2002 | US6479954 Control and drive system for a single winding electromagnetic actuator employing a single multifunction operational amplifier |
| 11/12/2002 | US6479846 Metal oxide semiconductor field effect transistor having a relatively high doped region in the channel for improved linearity |
| 11/09/2002 | CA2346310A1 Bridged class d amplifier |
| 11/07/2002 | WO2002089371A1 Power division multiplexing with incoherent signals and fixed powder hierarchy |
| 11/07/2002 | WO2002089322A1 Linearized switch-based power amplifier |
| 11/07/2002 | WO2002089321A1 A signal processing circuit |
| 11/07/2002 | WO2002089320A1 High efficiency power amplifier |
| 11/07/2002 | WO2002089319A2 Apparatus and method for tuning an inter-stage matching network of an integrated multistage amplifier |
| 11/07/2002 | WO2002089314A2 Device for controlling a closed circuit current for an amplifier transistor and amplifier circuit |
| 11/07/2002 | WO2002088862A1 Amplifier system with on-demand power supply boost |
| 11/07/2002 | WO2002087462A1 Integrated low-corner frequency high pass filter circuit |
| 11/07/2002 | WO2002065649A3 Amplifier phase change compensation |
| 11/07/2002 | WO2002058227A3 Common mode output current control circuit and method |
| 11/07/2002 | US20020163475 Tunable slot antenna |
| 11/07/2002 | US20020163458 Signal amplifying method, signal amplifier and devices related therewith |
| 11/07/2002 | US20020163407 Circuit and method for input side impedance matching of a power amplifier in an electronic device |
| 11/07/2002 | US20020163400 Tunable ferro-electric multiplexer |
| 11/07/2002 | US20020163388 Apparatus and method for tuning an inter-stage matching network of an integrated multistage amplifier |
| 11/07/2002 | US20020163387 System and method for converting from single-ended to differential signals |
| 11/07/2002 | US20020163386 Amplifying circuit |
| 11/07/2002 | US20020163385 Operation amplification circuit, constant voltage circuit and reference voltage circuit |
| 11/07/2002 | US20020163384 Transconductor and filter circuit using the same |
| 11/07/2002 | US20020163383 Instrumentation amplifier with improved AC common mode rejection performance |
| 11/07/2002 | US20020163382 High dynamic range amplification circuit |
| 11/07/2002 | US20020163381 Method and apparatus for calibration of an electronic device |
| 11/07/2002 | US20020163046 Merged semiconductor device and method |
| 11/06/2002 | EP1255350A2 Signal amplifying method, signal amplifier and devices related therewith |
| 11/06/2002 | EP1255349A2 Low pass filter for output of d-class amplifier |
| 11/06/2002 | EP1254512A1 Amplifier or filter circuit in switched capacitor circuit logic and method for amplifying or filtering signals |
| 11/06/2002 | EP1254511A1 Differential amplifier with gain substantially independent of temperature |
| 11/06/2002 | EP1254510A2 Low distortion driving amplifier for integrated filters |
| 11/06/2002 | EP1254509A1 Lineariser |
| 11/06/2002 | EP1002363B1 Device for transforming into voltage signals weak electric currents impressed by a non-ideal electric current source at the inlet of same device |
| 11/06/2002 | EP0778998B1 A linearizer for linearizing a non-linear component controlled by control voltage |
| 11/06/2002 | CN1378338A Signal amplifying circuit having capacitor with top and bottom surface of different area |
| 11/05/2002 | US6477099 Integrated circuit with a differential amplifier |
| 11/05/2002 | US6476680 Cascode amplifying circuit and folded cascode amplifying circuit |
| 11/05/2002 | US6476679 Semiconductor circuit with a stabilized gain slope |
| 11/05/2002 | US6476676 Semiconductor integrated circuit |
| 11/05/2002 | US6476675 Double-cascode two-stage operational amplifier |