Bi-dimensional shaping function in concurrent dual band GaAs envelope tracking power amplifier

Author

Cidronali, A. ; Zucchelli, F. ; Maddio, S. ; Giovannelli, N. ; Manes, G.

Author_Institution

Dept. Electron. & Telecomm, Univ. of Florence, Florence, Italy

fYear

2012

Firstpage

29

Lastpage

32

Abstract

This work reports for the first time the characterization and the bi-dimensional shaping function for a dual-band 10W ET-PA operating in concurrent mode at 870 and 1950 MHz. The characterization involved WCDMA 6.5 PAR excitation, and a detailed analysis of the signals statistic resulting from the ET mode is reported as well. The measured data reported an average DE for the concurrent modes of 49.2 %, while we observed a significant variation of the PAR, with respect to single band operation. We demonstrate that this PAR variation is due to the specific gain versus power level shape, which is established during the concurrent ET-PA operation.

Keywords

code division multiple access; power amplifiers; GaAs; WCDMA 6.5 PAR excitation; bi-dimensional shaping function; concurrent ET-PA operation; concurrent dual band GaAs envelope tracking power amplifier; frequency 1950 MHz; frequency 870 MHz; Dual band; Gain; Multiaccess communication; Peak to average power ratio; Power measurement; Radio frequency; Spread spectrum communication; Envelope Tracking PA; multi-band PA;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Amplifiers for Wireless and Radio Applications (PAWR), 2012 IEEE Topical Conference on

Conference_Location

Santa Clara, CA

Print_ISBN

978-1-4577-1119-0

Type

conf

DOI

10.1109/PAWR.2012.6174916

Filename

6174916