DocumentCode
452988
Title
Linear power amplifier with a modified predistortion compensation for NCDMA applications
Author
Kao, Yao-Huang ; Chen, Wei-Chung
Author_Institution
Inst. of Commun. Eng., Nat. Chiao-Tung Univ., Hsin-Chu, Taiwan
Volume
1
fYear
2005
fDate
4-7 Dec. 2005
Abstract
The selection of the matched transistor pair in a cascaded architecture for predistortion compensation is nontrivial. In this study, a modified architecture of predistortion with two paths is presented for the high power amplifier. The goal is to develop a 10W linear power amplifier with LDMOS transistor for 8 channels NCDMA repeater from 870 to 880MHz. With the modified scheme, the improvement of intermodulation is larger than 10dB and spurious is less than 50dBc.
Keywords
UHF power amplifiers; code division multiple access; compensation; intermodulation distortion; power MOSFET; repeaters; 10 W; 870 to 880 MHz; LDMOS transistor; NCDMA applications; high power amplifier; linear power amplifier; matched transistor pair; modified predistortion compensation; Bandwidth; Costs; Driver circuits; High power amplifiers; Nonlinear distortion; Power amplifiers; Power engineering and energy; Predistortion; Repeaters; Testing; LDMOS; Linear Power Amplifier; NCDMA; Predistortion;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN
0-7803-9433-X
Type
conf
DOI
10.1109/APMC.2005.1606221
Filename
1606221
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