DocumentCode
1940673
Title
Design of an ultra-high efficiency GaN high-power amplifier for SAR remote sensing
Author
Thrivikraman, Tushar ; Hoffman, James
Author_Institution
Radar Science and Engineering, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, 91109, USA
fYear
2013
fDate
2-9 March 2013
Firstpage
1
Lastpage
6
Abstract
This work describes the development of a high-power amplifier for use with a remote sensing SAR system. The amplifier is intended to meet the requirements for the SweepSAR technique for use in the proposed DESDynI SAR instrument. In order to optimize the amplifier design, active load-pull technique is employed to provide harmonic tuning to provide efficiency improvements. In addition, some of the techniques to overcome the challenges of load-pulling high power devices are presented. The design amplifier was measured to have 49 dBm of output power with 75% PAE, which is suitable to meet the proposed system requirements.
Keywords
Gallium nitride; Harmonic analysis; Impedance; Performance evaluation; Power generation; Power system harmonics; Tuning;
fLanguage
English
Publisher
ieee
Conference_Titel
Aerospace Conference, 2013 IEEE
Conference_Location
Big Sky, MT
ISSN
1095-323X
Print_ISBN
978-1-4673-1812-9
Type
conf
DOI
10.1109/AERO.2013.6497405
Filename
6497405
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