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)
09/2003
09/30/2003US6628167 Linearized folding amplifier
09/30/2003US6628166 RF communication system using an RF digital amplifier
09/30/2003US6627867 Integrated fiber optic receiver power meter
09/25/2003WO2003079623A1 System and method for compensating line losses over a digital visual interface (dvi) link
09/25/2003WO2003079547A2 Reconfigurable distributed active transformers
09/25/2003WO2003079546A1 Cross-differential amplifier
09/25/2003WO2003079544A1 Transistor arrangement
09/25/2003WO2003079543A1 Cascode amplifier
09/25/2003WO2003079542A1 Microwave circuit
09/25/2003WO2003079541A1 R.f. output power control
09/25/2003WO2003017492A3 Charge pump
09/25/2003WO2002060051A3 High linearity circuits and methods regarding same
09/25/2003WO2002029970A3 Variable bias control for switch mode rf amplifier
09/25/2003WO2002015397A3 Low-loss bypass mode of an amplifier with high linearity and matched impedance
09/25/2003US20030181181 Low noise amplifier (LNA) gain switch circuitry
09/25/2003US20030179893 Presence control for guitar amplifier
09/25/2003US20030179892 System and method for an improved configuration for stereo headphone amplifiers
09/25/2003US20030179815 Technique and apparatus for low power wireless communication
09/25/2003US20030179051 Cooling circuit; heat insulation container; stable signal transmission
09/25/2003US20030179047 Operational amplifier having large output current with low supply voltage
09/25/2003US20030179045 Power amplifier circuitry and method
09/25/2003US20030179044 RF pulse power amplifier
09/25/2003US20030179039 Amplifying circuit capable of limiting amplitude of output signal supplied to a speaker
09/25/2003US20030179038 Amplifier and tuner
09/25/2003US20030179037 Method and circuit for reduction of audible turn-on and turn-off transients in switching amplifiers
09/25/2003US20030179022 Modulated current source difference mode emitter follower driver circuit
09/25/2003US20030179015 Current sense amplifier
09/25/2003US20030178655 Dual sided power amplifier
09/25/2003US20030177810 Monolithic I.C. implemented calibration circuit
09/24/2003EP1347572A1 High-frequency amplifier
09/24/2003EP1347571A2 System and method for a startup circuit for a differential CMOS amplifier
09/24/2003EP1347474A1 Semiconductor device, and method and apparatus for manufacturing semiconductor device
09/24/2003EP1347310A2 Underwater antenna with at least one hydrophone and an amplifier-circuit associated with the hydrophone
09/24/2003EP1346471A2 Envelope restoration scheme for linear high-efficiency power amplification
09/24/2003EP1346470A2 Multiplexed input envelope restoration scheme for linear high-efficiency power amplification
09/24/2003EP1346469A2 Triple class e doherty amplifier topology for high efficiency signal transmitters
09/24/2003EP1346468A1 Amplifier circuit and method for reducing stray feedback
09/24/2003EP1346466A2 Modulator using class-e stage
09/24/2003EP1346340A1 Switched amplifier drive circuit for liquid crystal displays
09/24/2003EP1196982B1 Boost bridge amplifier
09/24/2003CN2575898Y Telephone set with wireless earphone
09/24/2003CN1444796A Digital trimming of operational amplifier offset voltage and quiescent current using non-volatile memory
09/24/2003CN1444795A Electronic circuit for converting signal and amplifier incorporting same
09/24/2003CN1444794A Linearized class C amplifier with dynamic biasing
09/24/2003CN1122358C Differential amplifying device
09/23/2003US6625238 Low power and high linearity receivers with reactively biased front ends
09/23/2003US6624918 Voltage control of optical receiver bandwidth
09/23/2003US6624704 High speed high current gain operational amplifier
09/23/2003US6624701 Current amplifier
09/23/2003US6624700 Radio frequency power amplifier for cellular telephones
09/23/2003US6624698 Low-voltage, broadband operational amplifier
09/23/2003US6624697 High frequency differential amplifier
09/23/2003US6624696 Apparatus and method for a compact class AB turn-around stage with low noise, low offset, and low power consumption
09/23/2003US6624694 System and method for producing an amplified signal
09/23/2003US6624693 Amplification circuit for electric charge type sensor
09/23/2003US6624692 Radio frequency amplifier with a waveguide filter for isolating amplifying elements
09/23/2003US6624509 Semiconductor device
09/23/2003US6624405 BIST for testing a current-voltage conversion amplifier
09/18/2003WO2003077416A2 Adjustable gain control system and method thereof
09/18/2003WO2003077415A1 Front stage amplifier with different modes
09/18/2003WO2003077414A2 Power amplifier
09/18/2003WO2003076886A1 Semiconductor device, temperature sensor, and electronic apparatus comprising it
09/18/2003WO2003063344B1 Operational amplifier having improved input offset performance
09/18/2003WO2002049300A3 Amplitude and phase modulator
09/18/2003WO2002049211A3 Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals
09/18/2003WO2002031969A3 Linear power amplifier bias circuit
09/18/2003US20030174793 Low power and high linearity receivers with reactively biased front ends
09/18/2003US20030174778 Digital communication extender system and method
09/18/2003US20030174023 Analog summing and differencing circuit, optical receiving circuit, optical transmitting circuit, automatic gain control amplifier, automatic frequency compensation amplifier, and limiting amplifier
09/18/2003US20030174022 Input follower system and method
09/18/2003US20030174021 High gain amplifier circuits and their applications
09/18/2003US20030174020 High gain amplifier circuits and their applications
09/18/2003US20030174018 Circuit comprising amplifiers connected in parallel, and a method of reducing the difference in amplitude between output signals from amplifiers thereof
09/18/2003US20030174012 Bias circuit
09/18/2003US20030173904 Matrix element precharge voltage adjusting apparatus and method
09/17/2003EP1345322A1 Power amplifier and communication apparatus
09/17/2003EP1345321A1 A circuit comprising amplifiers connected in parallel, and a method of reducing the difference in amplitude between output signals from amplifiers thereof
09/17/2003EP1345320A2 Amplifier and tuner
09/17/2003EP1344315A2 Class e/f switching power amplifiers
09/17/2003EP1344314A2 Wideband dual amplifier circuits
09/17/2003EP1344313A1 Microwave amplifier with bypass segment
09/17/2003EP1344312A2 Linearized class c amplifier with dynamic biasing
09/17/2003EP1344256A2 Semiconductor device and equipment for communication system
09/17/2003EP1010237B1 High-order multipath operational amplifier with dynamic offset reduction, controlled saturation current limiting, and current feedback for enhanced conditional stability
09/17/2003CN2574299Y Switch type audio power amplifier
09/17/2003CN1443397A RF Signal amplifier unit. transmission device and transmitting terminal-antenna
09/17/2003CN1443396A D类声频放大器 Class-D audio amplifier
09/17/2003CN1443395A Apparatus and method for efficiently amplifying wideband envelope signals
09/16/2003US6621445 Low power reference buffer circuit utilizing switched capacitors
09/16/2003US6621351 RF amplifier and method therefor
09/16/2003US6621348 Variable gain amplifier with autobiasing supply regulation
09/16/2003US6621347 RF power amplifier
09/16/2003US6621343 Open loop variable gain amplifier using replica gain cell
09/16/2003US6621342 Dynamic cascoding technique for operational amplifiers
09/16/2003US6621341 Diagnostic medical ultrasound systems having a method and circuitry for front-end gain control
09/16/2003US6621337 Power-efficient amplifier circuit and process for power-efficient amplification of a signal
09/16/2003US6621336 Over-current protection technique
09/16/2003US6621335 Class D amplifier with passive RC network
09/16/2003US6621334 Frequency-compensated, multistage amplifier configuration and method for operating a frequency-compensated amplifier configuration
09/16/2003US6621333 Circuit and method to counter offset voltage induced by load changes
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