Title :
A new GaAs variable-gain amplifier MMIC with a wide-dynamic-range and low-voltage-operation linear attenuation circuit
Author :
Inamori, Masahiko ; Motoyoshi, Kaname ; Kitazawa, Takahiro ; Tara, Katsushi ; Hagio, Masahiro
Author_Institution :
Discrete Device Div., Matsushita Electron. Corp., Kyoto, Japan
fDate :
2/1/2000 12:00:00 AM
Abstract :
A 40-dB dynamic-range variable-gain amplifier (VGA) designed for the code division multiple access (CDMA) cellular phone has been developed. A wide-dynamic-range VGA under a low control voltage of 2.0 V, compatible with high linearity and low distortion characteristics, essential for CDMA, is realized by the new gain control technique. It greatly contributes to the high performance and small size of RF circuits for CDMA cellular handsets
Keywords :
III-V semiconductors; MMIC amplifiers; UHF amplifiers; UHF integrated circuits; cellular radio; code division multiple access; electric distortion; field effect MMIC; gallium arsenide; low-power electronics; 2.0 V; GaAs; III-V semiconductors; cellular handsets; code division multiple access; control voltage; distortion; gain control technique; linearity; low-voltage-operation linear attenuation circuit; variable-gain amplifier MMIC; Cellular phones; Circuits; Gain control; Gallium arsenide; Linearity; Low voltage; MMICs; Multiaccess communication; Radio frequency; Voltage control;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
