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)
02/2003
02/27/2003WO2003017475A1 Method and system for multiple tuner application using a low noise broadband distribution amplifier
02/27/2003WO2003017474A1 System and method for activating gain stages in an amplification module
02/27/2003WO2003017473A1 Rf power amplifier transistor quiescent current checking and adjusting
02/27/2003WO2003017472A1 Broadband amplifier system having improved linearity and minimum loss
02/27/2003WO2003017471A2 System and method for improving input return loss in rf amplifiers
02/27/2003WO2003017470A1 Method and system for producing a drive signal for a current steering amplifier
02/27/2003WO2003017469A1 Pulse width modulation type audio amplifier having variable average switching frequency
02/27/2003WO2003017468A2 A system and method for minimizing dissipation in rf power amplifiers
02/27/2003WO2002089371A8 Power division multiplexing with incoherent signals and fixed powder hierarchy
02/27/2003WO2002054587A3 Envelope restoration scheme for linear high-efficiency power amplification
02/27/2003WO2002052720A3 Circuit for low noise, fully differential amplification
02/27/2003WO2002021684A3 Circuit for producing low-voltage differential signals
02/27/2003US20030040343 Power amplifier control
02/27/2003US20030038680 RF amplifier and method therefor
02/27/2003US20030038679 Circuit configuration for setting the operating point of a radiofrequency transistor and amplifier circuit
02/27/2003US20030038678 Differential amplifier with gain substantially independent of temperature
02/27/2003US20030038677 Variable-gain amplifier
02/27/2003US20030038674 Digital power amplifier and digital/analog converter
02/27/2003US20030038655 Differential amplifier and semiconductor integrated circuit for LCD drive
02/27/2003US20030038297 Apparatus,system, and method for transmission of information between microelectronic devices
02/26/2003EP1286462A2 Signal dependent current controlled amplifier and method of performing same
02/26/2003EP1286143A2 Comparing and amplifying detector circuit
02/26/2003EP1285492A1 High impedance bias device
02/26/2003CN1399812A Power amplifiers
02/26/2003CN1399241A Display and display driver circuit
02/25/2003US6525610 Dual plane microstrip power amplifier
02/25/2003US6525608 High gain, high bandwidth, fully differential amplifier
02/25/2003US6525607 High-voltage differential input receiver
02/25/2003US6525605 Power amplifier system having frequency and amplifier failure compensation
02/25/2003US6525604 Amplitude limiting method for a differential amplifier
02/25/2003US6525602 Input stage for a buffer with negative feed-back
02/25/2003US6525593 Method and apparatus for local and global power management in a programmable analog circuit
02/25/2003US6525571 Current-controlled CMOS circuits with inductive broadbanding
02/25/2003CA2231789C Amplifier circuit with a programmable configuration
02/20/2003WO2003015267A1 Integrated rc filter
02/20/2003WO2003015265A2 Open loop variable gain amplifier using replica gain cell
02/20/2003WO2003015264A1 Device for amplifying a high frequency signal
02/20/2003WO2003015263A1 Circuits and methods for compensating switched mode amplifiers
02/20/2003WO2003015262A1 Voltage/current conversion circuit arrangement
02/20/2003WO2003015261A1 Low-voltage class-ab output stage amplifier
02/20/2003WO2002088862B1 Amplifier system with on-demand power supply boost
02/20/2003WO2002047257A9 Driver for an external fet with high accuracy and gate voltage protection
02/20/2003US20030035554 Pulse width modulation type audio amplifier having variable average switching frequency
02/20/2003US20030035070 Method and system for multiple tuner application using a low noise broadband distribution amplifier
02/20/2003US20030034847 Charge pump
02/20/2003US20030034843 System and method for activating gain stages in an amplification module
02/20/2003US20030034842 Method and system for producing a drive signal for a current steering amplifier
02/20/2003US20030034840 Signal dependent current controlled amplifier and method of performing same
02/20/2003US20030034839 System and method for minimizing dissipation in RF power amplifiers
02/20/2003US20030034838 Method and system for implementing autonomous automatic gain control in a low noise broadband distribution amplifier
02/20/2003US20030034837 Broadband amplifier system having improved linearity and minimum loss
02/20/2003US20030034836 Offset error in linear feedback loops corrected by loop replication
02/20/2003US20030034835 System and method for improving input return loss in rf amplifiers
02/20/2003US20030034833 Operational amplifier having offset cancel function
02/20/2003US20030034813 Differential charge pump
02/20/2003US20030033847 Calibration circuit for use with a differential input preamplifier in a sensor system
02/19/2003CN1397934A Appts. and method for detecting light beam power in optical disc driver
02/18/2003US6522203 Power amplifying transistors
02/18/2003US6522200 Process-insensitive, highly-linear constant transconductance circuit
02/18/2003US6522199 Reconfigurable dual-mode multiple stage operational amplifiers
02/18/2003US6522198 Power amplifier having predistortion linearizer
02/18/2003US6522196 System and method for improving input return loss in RF amplifiers
02/18/2003US6522195 Low noise amplifier having bypass circuitry
02/18/2003US6522194 Envelope restoration scheme for linear high-efficiency power amplification
02/18/2003US6522179 Differential line driver circuit
02/18/2003CA2323354C Power amplifier system
02/13/2003WO2003012997A1 Circuits and methods for output impedance matching in switched mode circuits
02/13/2003WO2003012983A1 Differential amplifier circuit with common mode output voltage regulation
02/13/2003WO2003012982A2 Tuned damping circuit for power amplifier output
02/13/2003WO2003012981A1 Active element bias circuit for rf power transistor input
02/13/2003WO2003012570A1 Power source circuit
02/13/2003WO2002023716A3 Power amplifier circuitry and method
02/13/2003US20030032396 Electronic apparatus and wireless communication system
02/13/2003US20030031245 Modulator for digital amplifier
02/13/2003US20030030956 Current detection and overcurrent protection for transistors in pulse-width modulation amplifier
02/13/2003US20030030496 Method for implementing high frequency programmable poles and zeros in disk drive preamplifiers
02/13/2003US20030030495 Electrically tuned integrated amplifier for wireless communications
02/13/2003US20030030494 Low noise balanced amplifier
02/13/2003US20030030493 Low distortion broadband amplifier using gaas phemt devices
02/13/2003US20030030492 Current mirror and differential amplifier for providing large current ratio and high output impedance
02/13/2003US20030030491 Open loop variable gain amplifier using replica gain cell
02/13/2003US20030030489 Intermodulation signal detector
02/13/2003US20030030486 Pulse-width modulation circuit and power amplifier circuit
02/13/2003US20030030479 Logarithmic amplifier
02/13/2003US20030030056 Voltage and current reference circuits using different substrate-type components
02/12/2003EP1283567A2 Automatic gain control device of optical fiber amplifier
02/12/2003EP1282940A1 Current mirror and method for operation thereof
02/12/2003EP1282939A2 Rf power amplifier having high power-added efficiency
02/12/2003CN1397106A High-frequency amplifier and high-frequency mixer
02/12/2003CN1397076A Switched OPAMP technology for low-voltage switched-capacitor circuits
02/12/2003CN1396708A Light amplfier and optical pick-up device using it
02/11/2003US6519374 Predistortion arrangement using mixers in nonlinear electro-optical applications
02/11/2003US6519167 PWM controller with single-cycle response
02/11/2003US6518849 Dynamic delay compensation versus average switching frequency in a modulator loop and methods thereof
02/11/2003US6518842 Bipolar rail-to-rail input stage with selectable transition threshold
02/11/2003US6518841 Enhanced folded cascade voltage gain cell
02/11/2003US6518840 Circuit for linearizing the power control profile of a BiCMOS power amplifier
02/11/2003US6518839 Method and apparatus for effecting programmable gain amplification
02/11/2003US6518838 Circuit for compensating noise and errors from an output state of a digital amplifier
02/11/2003US6518837 Push-pull amplifier
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