Compensation of nonlinear distortion in RF power amplifiers by injection for LTE applications

Author

Mijuskovic, Jelena ; Bukvic, Branko ; Neskovic, Natasa ; Males-Ilic, Natasa ; Budimir, Djuradj

Author_Institution

Wireless Commun. Res. Group, Univ. of Westminster, London, UK

fYear

2014

fDate

25-27 Nov. 2014

Firstpage

352

Lastpage

355

Abstract

A linerization technique for reducing the third-order intermodulation products that uses simultaneous injection of the second harmonics at the amplifier input and output has been investigated in this paper. This technique was considered in theory and by simulation. The amplifier with the second harmonics components were designed and simulated using Agilent Design System (ADS) program. The linearization has been accomplished by adjusting the amplitudes and phases of the second harmonics on the optimal values. The analysis and results included in this paper relate to the case when an OFDM signal is at the amplifier input.

Keywords

Long Term Evolution; OFDM modulation; compensation; intermodulation distortion; linearisation techniques; radiofrequency power amplifiers; ADS program; Agilent Design System program; LTE applications; OFDM signal; RF power amplifiers; amplifier input; amplifier output; linerization technique; nonlinear distortion compensation; second harmonics components; third-order intermodulation products; Harmonic analysis; Linearization techniques; Microwave amplifiers; OFDM; Power amplifiers; Power harmonic filters; Radio frequency; OFDM; intermodulation distortion; lineariztion technique; second hamonics;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Forum Telfor (TELFOR), 2014 22nd

Conference_Location

Belgrade

Print_ISBN

978-1-4799-6190-0

Type

conf

DOI

10.1109/TELFOR.2014.7034422

Filename

7034422