Patents
Sitemap › H03 - Basic electronic circuitry › H03F - Amplifiers › H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
10/2003
10/16/2003US20030193367 Residual offset correction method and circuit for chopper stabilized amplifiers
10/16/2003US20030193354 Switched microphone buffer
10/16/2003US20030193339 Circuit for monitoring an open collector output circuit with a significant offset
10/15/2003EP1353440A1 Rail to rail class AB output for an amplifier
10/15/2003EP1353384A2 Heterojunction bipolar transistor, manufacturing thereof and power amplifier module
10/15/2003EP1352473A1 Input stage with selectable input impedance
10/15/2003EP1352468A2 Power amplifier (pa) with increased dynamics and efficiency
10/15/2003EP1352467A2 Low noise fully differential amplifier
10/15/2003EP1352466A2 A fully differential, variable-gain amplifier and a multidimensional amplifier arrangement
10/15/2003EP1352409A2 Active radio frequency cavity amplifier
10/15/2003EP1196987B1 Linearizer for microwave amplifier
10/15/2003EP1010239B1 Radar transmitter
10/15/2003CN1124597C Photo detector circuit
10/14/2003US6633447 Method and apparatus for compensation of second order distortion
10/14/2003US6633441 Method and apparatus for measuring an output signal of a floating transducer
10/14/2003US6633199 Amplifier circuit, radio transmitter, method and use
10/14/2003CA2112158C Active rf cavity
10/10/2003WO2003085821A1 A differential amplifier
10/09/2003WO2003084059A1 Semiconductor integrated circuit
10/09/2003WO2003084058A2 Active-loop, spatially-combined amplifier
10/09/2003WO2003084057A2 Method of measuring microwave power and device for carrying out said method
10/09/2003WO2003084056A1 Power amplifier array with same type predistortion amplifier
10/09/2003WO2003084055A2 Low noise amplifier and imaging element using same
10/09/2003WO2003084054A2 Amplifier and frequency converter
10/09/2003WO2002071596A3 High-frequency amplifier circuit having a directly-connected bias circuit
10/09/2003US20030189540 Amplifier circuit and liquid-crystal display unit using the same
10/09/2003US20030189462 Trans-conductance amplification circuit, trans-conductance filter circuit, and filtering method
10/09/2003US20030189461 Chopper chopper-stabilized operational amplifiers and methods
10/09/2003US20030189164 Photodetection system and circuit for amplification
10/08/2003EP1351400A2 Quad switched gain circuit
10/08/2003EP1351391A1 Dynamic biasing cuicuit for continuous time comparators
10/08/2003EP1351387A2 Trans-conductance amplification circuit trans-conductance filter circuit and filtering method
10/08/2003EP1351381A1 Rail-to-rail charge pump circuit
10/08/2003EP1351380A1 Class D amplifier energy control
10/08/2003EP1351379A1 High-frequency semiconductor device
10/08/2003EP1350315A1 Power amplifier
10/08/2003EP1350314A2 Harmonic matching network for a saturated amplifier
10/08/2003EP1192776B1 Reflecting modulator circuit comprising a negative impedance amplifier
10/08/2003CN1447523A Clip circuit and toothed wave generator comprising same
10/08/2003CN1447522A Reference voltage generating circuit and voltage amplifier adopting same
10/08/2003CN1447204A Output circuit for density grade control, its detector and detection method
10/08/2003CN1123970C Power splitter/combiner circuit, high power amplifier and balun circuit
10/07/2003US6631195 Speaker attenuation for practicing a musical instrument
10/07/2003US6631044 Method of reducing a frequency-response peaking of a magneto-resistive preamplifier in a mass data storage device, or the like
10/07/2003US6630866 High beta output stage for high speed operational amplifier
10/07/2003US6630865 Push-pull amplifiers
10/07/2003US6630864 Linear variable gain amplifiers
10/07/2003US6630863 Differential amplifier, semiconductor device, power supply circuit and electronic equipment using the same
10/07/2003US6630772 Device comprising carbon nanotube field emitter structure and process for forming device
10/07/2003CA2290723C A high tunability cmos delay element
10/02/2003WO2003081833A2 Floating-gate analog circuit
10/02/2003WO2003081813A2 Optical fiber receiver having an increased bandwidth
10/02/2003WO2003081769A2 Activity detector circuit
10/02/2003WO2003081670A1 Power amplifier device
10/02/2003WO2003081639A2 On-chip ac coupled circuit
10/02/2003WO2002003541A3 Digitally modulated rf amplifier system having reduced intermodulation energy at rf channel edges
10/02/2003US20030186509 Method of manufacturing semiconductor device
10/02/2003US20030184927 Adaptively controlled circuit
10/02/2003US20030184850 Optical amplifier having various control circuitry
10/02/2003US20030184568 Output circuit for gray scale control, testing apparatus thereof, and method for testing output circuit for gray scale control
10/02/2003US20030184459 Devices and methods for calibrating amplifier stages and for compensating for errors in amplifier stages of series-connected components
10/02/2003US20030184405 Symmetric microwave filter and microwave integrated circuit merging the same
10/02/2003US20030184388 High bandwidth, low power, single stage cascode transimpedance amplifier for short haul optical links
10/02/2003US20030184387 High bandwidth, low power, single stage cascode transimpedance amplifier for short haul optical links
10/02/2003US20030184386 Low power current feedback amplifier
10/02/2003US20030184385 Active-loop, spatially-combined amplifier
10/02/2003US20030184383 Distributed amplifier
10/02/2003US20030184382 High frequency amplifier
10/02/2003US20030184381 On chip AC coupled circuit
10/02/2003US20030184379 Operational amplifier output stage and method
10/02/2003US20030184378 Mixer and differential amplifier having bandpass frequency selectivity
10/02/2003US20030184377 Quad switched gain circuit
10/02/2003US20030184376 Class D amplifier energy control
10/02/2003US20030184371 Power amplifier array with same type predistortion amplifier
10/02/2003US20030184370 Reference voltage generating circuit and voltage amplifier using the same
10/02/2003US20030184369 Distributed circular geometry power amplifier architecture
10/02/2003US20030184353 Rail-to-rail charge pump circuit
10/02/2003US20030184342 Repeater with reduced power consumption
10/02/2003US20030184273 Limiter circuit
10/02/2003US20030183927 Microwave integrated circuit
10/02/2003US20030183871 Floating-gate analog circuit
10/02/2003CA2478244A1 On-chip ac coupled circuit
10/01/2003EP1349267A1 Amplifier circuit for am broadcasing
10/01/2003EP1349139A2 Output circuit for gray scale control, testing apparatus thereof, and method for testing output circuit for gray scale control
10/01/2003EP0932932B1 Device for amplifying digital signals
10/01/2003EP0916181B1 Voltage to current converter for high frequency applications
10/01/2003CN1446424A Method and apparatus for modulating radio signal using digital amplitude and phase control signals
10/01/2003CN1446399A 信号调制 Modulation
10/01/2003CN1446398A Broad-band driver circuit
10/01/2003CN1445634A Temp. characteristic compensation device
10/01/2003CN1123117C Burst mode degital data amplifier circuit unit and amplifier circuit
10/01/2003CN1123116C Pulse referenced control method for enhance power amplification of pulse modulated signal
10/01/2003CN1123115C Fulse modulation power amplifier with enhanced cascade control method
09/2003
09/30/2003US6628534 Method and apparatus for improving voltage to current signal conversion
09/30/2003US6628274 Display drive device, display device, hand-carry electronic device, and display driving method
09/30/2003US6628221 Signal amplifying method, signal amplifier and devices related therewith
09/30/2003US6628176 High-frequency input impedance matching circuit, high-frequency output impedance matching circuit and semiconductor integrated circuit
09/30/2003US6628170 Low noise amplifier
09/30/2003US6628169 Method and circuit for trimming offset and temperature drift
09/30/2003US6628168 Multiple input, fully differential, wide common-mode, folded-cascode amplifier
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