Title :
Buck derived converters based on gallium nitride devices for envelope tracking applications
Author :
Miaja, Pablo F. ; Rodriguez, Alex ; Sebastian, J.
Author_Institution :
Electron. Power Supply Syst. Group, Univ. of Oviedo, Gijon, Spain
Abstract :
Envelope Tracking (ET) is a technique designed to enhance the efficiency of Radio Frequency Power Amplifiers (RF PA). It is based on providing the voltage to the RF PA with variations that mimic the shape of the envelope of the communications signal that the RF PA is processing. As the bandwidth of these signals can be around several MHz, the switching frequency of the switching mode power supply designed for ET applications has to be very high. The good switching characteristics of Gallium Nitride devices makes them suitable for this applications.
Keywords :
III-V semiconductors; gallium compounds; power amplifiers; power convertors; power semiconductor devices; radiofrequency amplifiers; switched mode power supplies; wide band gap semiconductors; ET; GaN; RF PA; buck derived converters; communication signal; envelope tracking applications; gallium nitride devices; radiofrequency power amplifiers; switching frequency; switching mode power supply; DC-DC power converters; Isolators; MOSFET circuits; Radio frequency; Switches; Switching frequency; Transistors;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2013 IEEE
Conference_Location :
Denver, CO
DOI :
10.1109/ECCE.2013.6646738
