Title :
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
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);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2262929
