DocumentCode
2169839
Title
A novel Digital Adaptive Feedforward Linear Power Amplifier Based On DSP
Author
Li, Chengjin ; Zhu, Xiaowei ; Hong, Wei ; Liu, Jin
Author_Institution
State Key Laboratory of Millimeter Waves, Department of Radio Engineering, Southeast University, Nanjing (210096), P. R. China. chengjin.li@alcatel-sbell.com.cn
fYear
2002
fDate
23-26 Sept. 2002
Firstpage
1
Lastpage
4
Abstract
This paper describes a new design methodfor adaptive feedforward power amplifier. The third loop is added to the conventional two loops feedforward system which could detect the intermodulation directly and no need additional pilot signal any more. The DSP system is used to adaptive control three loops and makes the feedforward system automatically to achieve optimum result. The achievement has been used in cdma2000 base station power amplifier. The ACPR ofthe amplifier is better than 5OdBc.
Keywords
Attenuators; Control systems; Digital signal processing; Feedforward systems; Filters; Linearity; Phase distortion; Power amplifiers; Radiofrequency amplifiers; Voltage control;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 2002. 32nd European
Conference_Location
Milan, Italy
Type
conf
DOI
10.1109/EUMA.2002.339258
Filename
4140338
Link To Document