DocumentCode
2159923
Title
A Design of Predistortive Linearizing HPA Using Frequency Up-Conversion Mixing Operation
Author
Jeong, Yong-Chae ; Yun, Sang-Young ; Ahn, Dal ; Park, Kyu-Ho ; Kim, Chul-Dong
Author_Institution
Chonbuk Nat´´l Univ., Chonju-si, R.O. Korea. E-mail: ycjeong@moak.chonbuk.ac.kr
fYear
2000
fDate
Oct. 2000
Firstpage
1
Lastpage
4
Abstract
RF transistor generates distortion signals in addition carrier signals on amplifing process beca-use of the nonlinear characteristics of transistor. A compensation circuit is needed in order to reduce interference to neighboring channel by distortion signals generated in the nonlinear RF transistor. In this paper, predistortion linearizing design method that generates predistortion signals using frequency up-conversion mixing mechanism is proposed. The proposed method improves C/I ratio of an HPA system by 17dB (@Po=29dBm/tone) with two tones at 2139.985MHz and 2140.015MHz.
Keywords
Character generation; Circuits; Design methodology; Nonlinear distortion; Predistortion; RF signals; Radio frequency; Radiofrequency interference; Signal generators; Signal processing;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 2000. 30th European
Conference_Location
Paris, France
Type
conf
DOI
10.1109/EUMA.2000.338632
Filename
4139958
Link To Document