Dual-band predistortion linearization of an envelope modulated power amplifier operated in concurrent multi-standard mode

Author

Kwan, Andrew K. ; Younes, M. ; Silong Zhang ; Wenhua Chen ; Darraji, Ramzi ; Helaoui, Mohamed ; Ghannouchi, Fadhel M.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Calgary, Calgary, AB, Canada

fYear

2014

fDate

1-6 June 2014

Firstpage

1

Lastpage

4

Abstract

This paper reports a dual band predistortion linearization technique for an envelope modulator based transmitter operated in concurrent multi-band, multi-standard mode driven by 20 MHz bandwidth LTE and 4 carrier 20 MHz bandwidth WCDMA signals. To reduce the speed of the composite envelope path, a bandwidth reduced combined envelope signal is used for the dynamic supply of the dual-band PA. Measurement results using the dual-band linearization technique show an increase of over 10 dB in ACPR and 15% in average operating efficiency.

Keywords

Long Term Evolution; Volterra series; code division multiple access; distortion; linearisation techniques; power amplifiers; LTE signals; WCDMA signals; bandwidth 20 MHz; composite envelope path; dual band predistortion linearization; envelope modulated power amplifier; Baseband; Dual band; MIMO; Multiaccess communication; Radio frequency; Spread spectrum communication; Transmitters; Volterra series; digital predistortion; dual-band linearization; envelope tracking power amplifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium (IMS), 2014 IEEE MTT-S International

Conference_Location

Tampa, FL

Type

conf

DOI

10.1109/MWSYM.2014.6848536

Filename

6848536