On the Signal Probability Distribution Conscious Characterization of GaN Devices for Optimum Envelope Tracking PA Design

Author

Cidronali, Alessandro ; Mercanti, M. ; Giovannelli, Niccolo ; Maddio, Stefano ; Manes, Gianfranco

Author_Institution

Dept. Inf. Eng., Univ. of Florence, Florence, Italy

Volume

23

Issue

7

fYear

2013

fDate

Jul-13

Firstpage

380

Lastpage

382

Abstract

This letter presents a signal probability distribution function conscious characterization technique, suitable for the optimization of envelope tracking (ET) power amplifiers. The method and its validation rely on pulsed harmonic load-pull measurements. The analytical treatment permitted to understand the impact of the peak-to-average power ratio on the load termination, and the experimental characterization revealed the sensitivity of the ET performance with respect to the load termination. The technique was applied to a GaN HEMT device at the carrier frequency of 870 MHz.

Keywords

UHF measurement; UHF power amplifiers; UHF transistors; high electron mobility transistors; statistical distributions; ET power amplifier optimization; GaN; HEMT device; frequency 870 MHz; optimum envelope tracking PA design; peak-to-average power ratio; pulsed harmonic load-pull measurements; signal probability distribution conscious characterization; Envelope-tracking (ET); GaN power amplifier (PA);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2013.2262929

Filename

6518199