A novel wideband frequency-tunable feedforward power amplifier [RF]

Author

Gong, Fan ; Zhang, Yuejun ; Yao, Yan

Author_Institution

State Key Lab On Microwave & Digital Commun., Tsinghua Univ., Beijing, China

Volume

2

fYear

2002

fDate

29 June-1 July 2002

Firstpage

1248

Abstract

A novel feedforward amplifier with frequency tunable ability was studied for wideband wireless communication applications. This kind of feedforward amplifier is based on the complex gain stability approach proposed before, but what is different is the add-on adaptive function in frequency, thus making it able to work within a wider frequency range, and keeping very good performance at the same time. The amplifier is suitable for narrow bandwidth signals whose central frequency sometimes changes in a wide range, for instance, a repeater system.

Keywords

adaptive control; circuit stability; circuit tuning; feedforward; intermodulation distortion; linearisation techniques; power amplifiers; radio repeaters; radiofrequency amplifiers; wideband amplifiers; adaptive frequency functions; amplifier linearization; complex gain stability; distortion reduction; intermodulation cancellation; narrow bandwidth signals; repeater systems; wide operating frequency range; wideband frequency-tunable feedforward RF power amplifiers; wideband wireless communication; Bandwidth; Broadband amplifiers; Degradation; Frequency; Nonlinear distortion; Phase distortion; Phase modulation; Power amplifiers; Signal generators; Telecommunications;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems and West Sino Expositions, IEEE 2002 International Conference on

Print_ISBN

0-7803-7547-5

Type

conf

DOI

10.1109/ICCCAS.2002.1179009

Filename

1179009