Research Article
Improving Power Efficiency of AESA System with GaN Supply-Modulated Power Amplifier
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@INPROCEEDINGS{10.1007/978-3-030-77424-0_12, author={Pham Cao Dai and Le Dai Phong and Luu Van Tuan and Nguyen Hoang Nguyen}, title={Improving Power Efficiency of AESA System with GaN Supply-Modulated Power Amplifier}, proceedings={Industrial Networks and Intelligent Systems. 7th EAI International Conference, INISCOM 2021, Hanoi, Vietnam, April 22-23, 2021, Proceedings}, proceedings_a={INISCOM}, year={2021}, month={5}, keywords={Active electronically scanned array GaN Supply-modulated power amplifier Power distribution Operation range}, doi={10.1007/978-3-030-77424-0_12} }- Pham Cao Dai
Le Dai Phong
Luu Van Tuan
Nguyen Hoang Nguyen
Year: 2021
Improving Power Efficiency of AESA System with GaN Supply-Modulated Power Amplifier
INISCOM
Springer
DOI: 10.1007/978-3-030-77424-0_12
Abstract
This paper presents an analysis of using GaN supply-modulated (SM) power amplifier (PA) in an active electronically scanned array (AESA) system to improve system power efficiency. Specifically, the paper details a 4-W X-band GaN SM PA with power-added efficiency (PAE) of above 50% at 9.4 GHz frequency. The proposed PA achieves the PAE of above 35% over 800 MHz bandwidth and 40% in 10 dB output power back-off range. The simulation results show that the system PAE increases about 14–18% at the same condition of the array amplitude distribution and array scales by using GaN SM PA.
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