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)
11/2003
11/13/2003WO2003094344A1 Improved variable gain amplifier
11/13/2003WO2003094343A1 Dual mode power amplifier having a common controller
11/13/2003WO2003093918A1 Current shutdown circuit for active bias circuit having process variation compensation
11/13/2003WO2003081813A3 Optical fiber receiver having an increased bandwidth
11/13/2003WO2003063340A3 Input buffer amplifier with centroidal layout
11/13/2003WO2002097968A3 Method and apparatus for compensation of second order distortion
11/13/2003WO2002091567A3 Amplifier
11/13/2003WO2002073794A3 Switchless multi-resonant, multi-band power amplifier
11/13/2003WO2002051001A3 A bias circuit for a low voltage differential circuit
11/13/2003US20030211833 Radio architecture
11/13/2003US20030210097 CMOS amplifier for optoelectronic receivers
11/13/2003US20030210096 N-way RF power amplifier circuit with increased back-off capability and power added efficiency using selected phase lengths and output impedances
11/13/2003US20030210094 AB class amplifier for controlling quiescent current
11/13/2003US20030210092 AC coupled multistage high gain operational amplifier
11/13/2003US20030210091 Highly efficient constant transconductance power amplifier
11/13/2003US20030210080 Buffer circuit using a transconductance multiplier
11/13/2003US20030210078 Current source evaluation sense-amplifier
11/12/2003EP1360873A2 Audio sound quality enhancement apparatus
11/12/2003EP1360758A2 Circuit arrangement for providing an exponential pre-distortion for an adjustable amplifier
11/12/2003CN1455984A CMOS power amplifier with reduced harmonics and improved efficiency
11/12/2003CN1127820C Arrangement and methods for generating radio frequency signal
11/11/2003US6646918 Semiconductor level shifter circuit
11/11/2003US6646509 Layout technique for matched resistors on an integrated circuit substrate
11/11/2003US6646508 Wide bandwidth, current sharing, MOSFET audio power amplifier with multiple feedback loops
11/11/2003US6646507 Power booster amplifier
11/11/2003US6646505 Power amplifier array with same type predistortion amplifier
11/11/2003US6646504 Broadband amplifier system having improved linearity and minimum loss
11/11/2003US6646502 Digital-input class-D amplifier
11/11/2003US6646496 Current control circuit
11/11/2003US6646486 Semiconductor integrated circuit
11/11/2003US6646481 Current steering circuit for amplifier
11/11/2003US6646470 High speed output buffers using voltage followers
11/06/2003WO2003092157A1 Common-base amplifier with high input overload and/or tunable transimpedance
11/06/2003WO2003092153A2 Rf power amplifier employing bias circuit topologies for minimization of rf amplifier memory effects
11/06/2003WO2003065415A3 Group delay equalizer integrated with a wideband distributed amplifier monolithic microwave integrated circuit
11/06/2003WO2003017493A3 Differential charge pump
11/06/2003WO2002062103A9 Audio sound quality enhancement apparatus
11/06/2003WO2002047252A3 Self-boosting circuit for a power amplifier
11/06/2003WO2002013377A3 A switched-capacitor, common-mode feedback circuit for a differential amplifier without tail current
11/06/2003WO2002009272A3 High-frequency amplifier circuit with independent control of quiescent current and bias impedance
11/06/2003US20030207673 Constant-current source circuit, intermediate-frequency gain control circuit and mobile terminal device
11/06/2003US20030207671 Temperature compensation circuit and a variable gain amplification circuit
11/06/2003US20030206744 Bottom level detection device for burst mode optical receiver
11/06/2003US20030206076 Concurrent multi-band low noise amplifier architecture
11/06/2003US20030206064 Output power control system
11/06/2003US20030206063 Method and system for producing a drive signal for a current steering amplifier
11/06/2003US20030206062 Variable gain amplifier
11/06/2003US20030206061 Differential amplifier and filter circuit using the same
11/06/2003US20030206060 Operational amplifier circuit
11/06/2003US20030206059 Operational amplifier circuit
11/06/2003US20030206058 RF power amplifier and method for packaging the same
11/06/2003US20030206054 DC offset compensation circuit of closed loop operational amplifier and method of compensating for DC offset
11/06/2003US20030205722 Semiconductor device
11/06/2003US20030205719 Semiconductor device and power amplifier using the same
11/05/2003EP1359673A1 Radio frequency tuner front end with adaptive supply current
11/05/2003EP1359665A2 HBT linearizer and power booster
11/05/2003EP1359664A1 Electret microphone buffer circuit with significantly enhanced power supply rejection
11/05/2003EP1358713A1 Cmos power amplifier with reduced harmonics and improved efficiency
11/05/2003EP1175726B1 Method and apparatus for controlling the common mode impedance misbalance of an isolated single-ended circuit
11/05/2003CN2585485Y Asymmetric transistor amplifier
11/05/2003CN1454409A Programmable radio frequency predistortion linearizer and method thereof
11/05/2003CN1454001A Shock sound prevention circuit
11/05/2003CN1454000A Shock Sound prevention circuit
11/05/2003CN1453940A High frequency switch, high-frequency switch. amplified circuit and mobile body communication terminal
11/05/2003CN1453931A High-gain complementary metal oxide operation amplifier
11/05/2003CN1453675A Drive voltage controller
11/04/2003US6643540 Voltage sensing system with input impedance balancing for electrocardiogram (ECG) sensing applications
11/04/2003US6643472 APD bias circuit
11/04/2003US6642795 Fast recovery time precision amplifier
11/04/2003US6642794 Noise and input impedance matched amplifier
11/04/2003US6642793 Differential current mirror system and method
11/04/2003US6642792 Signal amplification device with circuit maintaining potential of input side of current mirror circuit at predetermined value
11/04/2003US6642791 Self-biased amplifier circuit and method for self-basing amplifier circuit
11/04/2003US6642790 Differential, complementary amplifier
11/04/2003US6642789 Operational amplifier input stage and method
11/04/2003US6642788 Differential cascode amplifier
11/04/2003US6642787 Differential amplifier with two long-tailed pairs of transistors
11/04/2003US6642783 Amplification device with optimized linearity
10/2003
10/30/2003WO2003090346A1 Hf amplifier comprising a switchable amplification
10/30/2003WO2003090345A1 Electronic amplifier circuit
10/30/2003WO2003090344A1 Method and/or apparatus for controlling a common-base amplifier
10/30/2003WO2003090343A2 Power amplifier
10/30/2003WO2003065570A3 Modulator- amplifier
10/30/2003WO2002089314A3 Device for controlling a closed circuit current for an amplifier transistor and amplifier circuit
10/30/2003WO2002087462A3 Integrated low-corner frequency high pass filter circuit
10/30/2003WO2002058231A8 Power amplifier (pa) with increased dynamics and efficiency
10/30/2003WO2002056463A3 System and method for linearizing vacuum electronic amplification
10/30/2003US20030203725 Circuit stage for radio frequency tuner and radio frequency tuner
10/30/2003US20030202805 Optical receiving apparatus and method
10/30/2003US20030202803 Signal level detecting device for a burst-mode optical receiver
10/30/2003US20030202802 Automatic threshold control device for burst mode optical receiver
10/30/2003US20030202669 Electret microphone buffer circuit with significantly enhanced power supply rejection
10/30/2003US20030201835 Power amplifier protection circuit
10/30/2003US20030201833 N-way RF power amplifier circuit with increased back-off capability and power added efficiency using unequal input power division
10/30/2003US20030201832 HBT linearizer and power booster
10/30/2003US20030201831 Low quiescent power class AB current mirror circuit
10/30/2003US20030201830 Frequency selective distributed amplifier
10/30/2003US20030201829 Dual mode power amplifier having a common controller
10/30/2003US20030201828 Operational amplifier
10/30/2003US20030201827 High frequency power amplifier module
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