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Design of an Ultra-High Efficiency GaN High-Power Amplifier for SAR Remote SensingThis 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 Sweep-SAR 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.
Document ID
20150004684
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Thrivikraman, Tushar
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hoffman, James
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
April 8, 2015
Publication Date
March 2, 2013
Subject Category
Communications And Radar
Meeting Information
Meeting: IEEE Aerospace Conference
Location: Big Sky, MT
Country: United States
Start Date: March 2, 2013
End Date: March 9, 2013
Sponsors: Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Other
Keywords
active load-pull
GaN Power Amplifier
harmonic tuning

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