| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 02/25/2004 | CN1478321A Amplifier linearisation |
| 02/25/2004 | CN1478265A Switched amplifier drive circuit for liquid crystal display |
| 02/25/2004 | CN1477783A High-efficiency power amplifier system and method for producing high-efficiency amplification output |
| 02/25/2004 | CN1140050C Reference voltage generating circuit capable of generating multiple reference voltage |
| 02/25/2004 | CN1140026C Optical integrated device |
| 02/24/2004 | US6697611 Method and apparatus for performing DC offset cancellation in a receiver |
| 02/24/2004 | US6696896 Method for implementing high frequency programmable poles and zeros in disk drive preamplifiers |
| 02/24/2004 | US6696895 Push-pull amplifier |
| 02/24/2004 | US6696894 Operational amplifier with independent input offset trim for high and low common mode input voltages |
| 02/24/2004 | US6696891 Class D amplifier |
| 02/24/2004 | US6696890 Differential signal transfer circuit |
| 02/24/2004 | US6696887 Transistor-based interface circuitry |
| 02/24/2004 | US6696877 Level shift circuit |
| 02/24/2004 | US6696869 Buffer circuit for a high-bandwidth analog to digital converter |
| 02/19/2004 | WO2004015859A2 Variable gain amplifier with improved control characteristics linearity |
| 02/19/2004 | WO2004015858A2 Highly linear variable gain amplifier |
| 02/19/2004 | WO2004015857A1 Sensor signal output circuit |
| 02/19/2004 | WO2004015855A1 Volume adjustment device, digital amplifier, and digital signal reproducing device |
| 02/19/2004 | US20040032961 Signal processing apparatus, method of controlling the same, and program for implementing the method |
| 02/19/2004 | US20040032700 Base bias circuit, and power amplifier using the base bias circuit |
| 02/19/2004 | US20040032298 Circuit configuration for producing exponential predistortion for a variable amplifier |
| 02/19/2004 | US20040032296 Nonlinear distortion compensation power amplifier |
| 02/19/2004 | US20040032295 Power regulator for intermittent use of traveling wave tube amplifiers in communications satellites |
| 02/19/2004 | US20040032294 Charge recycling amplifier for a high dynamic range CMOS imager |
| 02/19/2004 | US20040032246 Sensor circuit and method of producing it |
| 02/19/2004 | DE20317068U1 Vacuum tube valve preamplifier for use with vinyl disc records has special hum free electronic circuit characteristic |
| 02/19/2004 | DE20215600U1 Symmetrical amplifier concept based upon a pair of coupled differencing amplifiers |
| 02/19/2004 | DE10247034B3 Adaptive pre-attenuation method for digital data values for communications device end stage has pre-attenuation values provided by value table updated by evaluating feedback signal values |
| 02/18/2004 | EP0767622B1 Electrical power amplifier for continuous cardiac output monitoring |
| 02/18/2004 | CN1476672A Delta-Sigma modulation apparatus and signal amplication apparatus |
| 02/18/2004 | CN1476667A Power amplification for parametric loudspeakers |
| 02/18/2004 | CN1476666A Wideband dual amplifier circuits |
| 02/18/2004 | CN1476638A Semiconductor device and apparatus for communication system |
| 02/18/2004 | CN1476553A Method for adjusting BGR circuit and BGR circuit |
| 02/18/2004 | CN1476169A Semiconductor integrated circuit device capable of generating stably constant current under low power voltage |
| 02/18/2004 | CN1476164A Multichannel power amplifier |
| 02/18/2004 | CN1476163A Method and device for operating emission amplifier |
| 02/18/2004 | CN1139183C Power amplifier and control circuit thereof |
| 02/18/2004 | CN1139182C High frequency variable gain amplifier device and wireless communication terminal |
| 02/17/2004 | US6693571 Modulation of a digital input signal using a digital signal modulator and signal splitting |
| 02/17/2004 | US6693493 Single-ended differential circuit using complementary devices |
| 02/17/2004 | US6693490 Adjustable gain control system and method thereof |
| 02/17/2004 | US6693489 Level-shift circuits and related methods |
| 02/17/2004 | US6693485 Differential amplifiers with increased input ranges |
| 02/14/2004 | CA2437222A1 Amplifier |
| 02/12/2004 | WO2004013961A1 Gain-controlled amplifier, receiver circuit and radio communication device |
| 02/12/2004 | WO2004013960A1 Hybrid structure for distributed power amplifiers |
| 02/12/2004 | WO2004013959A1 Improved 2-stage large bandwidth amplifier using diodes in the parallel feedback structure |
| 02/12/2004 | WO2004013928A1 Transmission line and semiconductor integrated circuit device |
| 02/12/2004 | WO2003096032A3 Current source evaluation sense-amplifier |
| 02/12/2004 | WO2003084058A3 Active-loop, spatially-combined amplifier |
| 02/12/2004 | WO2003049284A3 Integrated circuit with an amplifier |
| 02/12/2004 | WO2003019776A3 Rf amplifier and method therefor |
| 02/12/2004 | WO2002101944A3 Power amplifier control |
| 02/12/2004 | WO2002084864A3 Communications signal amplifiers having independent power control and amplitude modulation |
| 02/12/2004 | WO2002082633A3 System and method for current-mode amplitude modulation |
| 02/12/2004 | WO2002071605A3 Adaptive power amplifier system |
| 02/12/2004 | WO2002071601A3 Preamplifier circuit for a photodetector |
| 02/12/2004 | WO2002050996A3 Compact cascode radio frequency cmos power amplifier |
| 02/12/2004 | WO2002027943A3 Auto-calibration circuit to minimize input offset voltage in an integrated circuit analog input device |
| 02/12/2004 | US20040029535 Radio-frequency power amplification circuit having stabilization circuit |
| 02/12/2004 | US20040028243 Multi-channel pulse width modulation apparatus |
| 02/12/2004 | US20040028242 Audio reproducing apparatus and method |
| 02/12/2004 | US20040027755 Reconfigurable distributed active transformers |
| 02/12/2004 | US20040027204 High-frequency amplifier |
| 02/12/2004 | US20040027203 High-efficiency solid state power amplifier |
| 02/12/2004 | US20040027202 Distributed level-shifting network for cascading broadband amplifiers |
| 02/12/2004 | US20040027201 Rail to rail class AB output for an amplifier |
| 02/12/2004 | US20040027200 Highly linear variable gain amplifier |
| 02/12/2004 | US20040027199 Switched-mode power amplifier integrally performing power combining |
| 02/12/2004 | US20040027196 Electronic circuit for converting a signal and amplifier incorporating same |
| 02/12/2004 | US20040027169 Dynamic biasing circuit for continuous time comparators |
| 02/12/2004 | DE10233526A1 Band gap reference circuit for mobile apparatus has two current paths with differential amplifiers and reference current |
| 02/11/2004 | EP1388943A1 Multi-channel pulse width modulation apparatus |
| 02/11/2004 | EP1388940A2 Circuit arrangement for controlling power transistors |
| 02/11/2004 | EP1388935A1 Active load device for biasing an ultra wideband distributed amplifier with gain control |
| 02/11/2004 | EP1388926A1 Level shift voltage generator |
| 02/11/2004 | EP1388170A2 Bond wire tuning of rf power transistors and amplifiers |
| 02/11/2004 | CN1475043A Nonlinear distortion compensation power amplifier |
| 02/11/2004 | CN1138356C Data communication receiving unit |
| 02/11/2004 | CN1138348C Digital circuit, transceiver with said digital circuit and method for transmitting and receiving signal |
| 02/11/2004 | CN1138339C Variable output amplifier apparatus |
| 02/11/2004 | CN1138338C Darlington with 2X times poer enlargement and its ultra fidelity open loop constant current power discharge |
| 02/11/2004 | CN1138337C Transistor 'Common collector-common base', 'common collector-commonbase-comon-collect' amplifier circuit |
| 02/10/2004 | US6690743 Compensation of delay in linearization loop of power amplifier |
| 02/10/2004 | US6690251 Tunable ferro-electric filter |
| 02/10/2004 | US6690249 Power splitter/combiner multi-layer circuit |
| 02/10/2004 | US6690239 High bandwidth, low power, single stage cascode transimpedance amplifier for short haul optical links |
| 02/10/2004 | US6690238 Variable phase-shifting rf power amplifiers |
| 02/10/2004 | US6690237 High frequency power amplifier, and communication apparatus |
| 02/10/2004 | US6690236 Gain variable amplifier |
| 02/10/2004 | US6690231 Gain stage that minimizes the miller effect |
| 02/10/2004 | US6690229 Feed back current-source circuit |
| 02/10/2004 | US6690225 DC offset cancel circuit |
| 02/10/2004 | US6690198 Repeater with reduced power consumption |
| 02/10/2004 | US6690176 Low-loss tunable ferro-electric device and method of characterization |
| 02/05/2004 | WO2004012333A2 Method and apparatus for common-mode level shifting |
| 02/05/2004 | WO2004012329A1 Gain-variable amplifier |
| 02/05/2004 | WO2004011950A2 High sensitivity, high resolution detection of signals |
| 02/05/2004 | WO2003100965A3 High speed amplifier incorporating pre-emphasis |