Power amplifier linearization using feedforward technique for wide band communication system

Author

Honarvar, M.A. ; Moghaddasi, M.N. ; Eskandari, Ar

Author_Institution

Najafabad Branch, Islamic Azad Univ., Najafabad, Iran

fYear

2009

fDate

Jan. 9 2009-Dec. 11 2009

Firstpage

72

Lastpage

75

Abstract

The performance of a wireless communication system depends on amplifier´s nonlinearity. In this paper, Feed-forward amplifier implementation for wideband communication system are introduced. By adding a new distortion cancellation loop to the original feedforward structure, improved measurement for large linearity power output is presented. The intermodulation distortion (IMD) for two tone harmonic balance has been reduced to -90.5 dBm. A UMTS downlink channel has been used as application case.

Keywords

3G mobile communication; feedforward amplifiers; power amplifiers; radiofrequency amplifiers; UMTS downlink channel; Universal Mobile Telecommunication System; distortion cancellation loop; feed-forward amplifier; feedforward structure; feedforward technique; intermodulation distortion; linearity power output; power amplifier linearization; wide band communication system; wireless communication system; 3G mobile communication; Broadband amplifiers; Distortion measurement; Downlink; Feedforward systems; Intermodulation distortion; Linearity; Power amplifiers; Power measurement; Wireless communication; Feedforward technique; Linearization; RF power amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio-Frequency Integration Technology, 2009. RFIT 2009. IEEE International Symposium on

Conference_Location

Singapore

Print_ISBN

978-1-4244-5031-2

Electronic_ISBN

978-1-4244-5032-9

Type

conf

DOI

10.1109/RFIT.2009.5383686

Filename

5383686