Performance Improvement of Power Amplifiers with Digital Linearization Technology

Author

Jiang, Wei ; Xing, Bo ; Wang, Jingqi ; Ni, Yan ; Peng, Chong ; Zhu, Xiaowei ; Hong, Wei

Author_Institution

Dept. of Radio Eng., Southeast Univ., Nanjing

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

4

Abstract

In this paper, a digital linearization platform which consists of digital predistortion (DPD) and Crest factor reduction (CFR) is presented, which is applied to improve the efficiency and linearity of GaAs power amplifier (PA) modules. For a 16W GaAs PA module driven by a two-carrier WCDMA input signal with 12.6dB peak average power ratio (PAPR), the output power is improved from 28.8dBm to 32.8dBm while the adjacent channel leakage ratio (ACLR) is kept as -45dBc@5MHz is achieved after using the digital linearization technology.

Keywords

adjacent channel interference; code division multiple access; gallium arsenide; linearisation techniques; power amplifiers; Crest factor reduction; WCDMA input signal; adjacent channel leakage ratio; digital linearization technology; digital predistortion; peak average power ratio; power amplifier module; power amplifiers; Baseband; Broadband amplifiers; Gallium arsenide; Linearity; Microwave amplifiers; Millimeter wave technology; Multiaccess communication; Peak to average power ratio; Power amplifiers; Predistortion; Crest factor reduction; Digital linearization; Power amplifier; Predistortion;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0748-4

Electronic_ISBN

978-1-4244-0749-1

Type

conf

DOI

10.1109/APMC.2007.4554695

Filename

4554695