Title :
GaN Doherty Amplifier With Compact Harmonic Traps
Author :
Colantonio, Paolo ; Giannini, Franco ; Giofrè, Rocco ; Piazzon, Luca
Author_Institution :
Electron. Eng. Dept., Univ. of Roma Tor Vergata, Rome
Abstract :
In this contribution, the design of an uneven AB-C Doherty power amplifier (DPA) in GaN technology, implementing a new approach to control the higher device harmonics, is presented. The DPA was designed to operate at 2.14 GHz and with the aim to reduce as much as possible the chip size, without losing the Doherty operating principle. The measurement results in CW conditions at 2.14 GHz had shown average drain efficiency higher than 55% at 6 dB of back-off, with a saturated output power of 37 dBm.
Keywords :
III-V semiconductors; gallium compounds; harmonics; power amplifiers; semiconductor technology; wide band gap semiconductors; GaN; GaN Doherty amplifier; drain efficiency; frequency 2.14 GHz; harmonic traps; power amplifier; Gallium nitride; High power amplifiers; Impedance; Inverters; Microwave amplifiers; Peak to average power ratio; Phase control; Power generation; Power measurement; Power system harmonics;
Conference_Titel :
Microwave Conference, 2008. EuMC 2008. 38th European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-006-4
DOI :
10.1109/EUMC.2008.4751765
