e-Article
Performance Enhancement of Doherty Power Amplifier with LINC
Document Type
Conference
Author
Source
ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications. 2008-07 2008(7):1437-1440
Subject
Language
Korean
Abstract
In this paper, we analysis doherty amplifier’s electric nonlinearity and electrothermal memory effect and propose a proper compensator structure, LINC(LInear amplification using Nonlinear Components), with WCDMA signal input. A power amplifier is important component that decide efficiency in communication system. A doherty power amplifier is good efficiency. However, it has high distortion characteristic. For high efficiency and linearity, we propose a proper doherty amplifier sheme with temperature compensation. The ACLR characteristics of compensated doherty amplifier is improved 12.55 ㏈ at 5 ㎒ offset frequency.