Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:P2
Session:
Number:P2-3
Performance Enhancement of Doherty Power Amplifier with LINC
Suk-Hui Lee, Sang-Ki Kim, Sung-Il Bang,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
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 W-CDMA 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 dB at 5 MHz offset frequency.