Title :
An adaptive bias circuits for high efficiency power amp
Author :
Shin, So-Bong ; Lee, Sang-Gug
Author_Institution :
Information & Commun. Univ., Taejon, South Korea
Abstract :
An adaptive bias circuit to improve the efficiency of the power amp is proposed that control the DC current of the power amp as a function of the input power. The proposed circuit uses the class-AB characteristics of the common-source amplifier. The considerations for the optimum biasing of the power amp are discussed
Keywords :
CMOS integrated circuits; electric current control; power amplifiers; CMOS power amplifier; DC current control; adaptive bias circuits; class-AB characteristics; common-source amplifier; high efficiency power amp; input power; large-signal transconductance; optimum biasing; Adaptive control; Batteries; Circuits; Communication system control; High power amplifiers; Mobile handsets; Multiaccess communication; Power amplifiers; Switches; Voltage control;
Conference_Titel :
TENCON 2000. Proceedings
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-6355-8
DOI :
10.1109/TENCON.2000.888383
