A New RF Predistortion Scheme for High-Power Amplifier in Shortwave Communications Systems

Author

Yang, Jiantao ; Gao, Jun ; Huang, Bingkai ; Wang, Xudong

Author_Institution

Electron. Eng. Coll., Naval Univ. of Eng., Wuhan

fYear

2008

fDate

12-14 Oct. 2008

Firstpage

1

Lastpage

4

Abstract

This paper proposes a new digital RF predistortion scheme for high-power amplifiers (HPAs), which can completely meet the requirements of precision and bandwidth (BW) in modern shortwave communications systems and does not use nonlinear active RF devices. Simultaneously it realizes multichannel broadband digital predistortion and all-digitalization for actuator. Simulation results show that the proposed predistortion scheme is very effective in reducing the nonlinear distortion of HPAs, allowing small output backoff as low as 4.2 dB.

Keywords

actuators; power amplifiers; actuator all-digitalization; digital RF predistortion scheme; high-power amplifier; multichannel broadband digital predistortion; nonlinear distortion; shortwave communications systems; Bandwidth; Broadband amplifiers; Delay; Educational institutions; High power amplifiers; Nonlinear distortion; Predistortion; Radio frequency; Radiofrequency amplifiers; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on

Conference_Location

Dalian

Print_ISBN

978-1-4244-2107-7

Electronic_ISBN

978-1-4244-2108-4

Type

conf

DOI

10.1109/WiCom.2008.496

Filename

4678405