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Radar Waveform Pulse Analysis Measurement System for High-Power GaN AmplifiersThis work presents a measurement system to characterize the pulsed response of high-power GaN amplifiers for use in space-based SAR platforms that require very strict amplitude and phase stability. The measurement system is able to record and analyze data on three different time scales: fast, slow, and long, which allows for greater detail of the mechanisms that impact amplitude and phase stability. The system is fully automated through MATLAB, which offers both instrument control capability and in-situ data processing. To validate this system, a high-power GaN HEMT amplifier operated in saturation was characterized. The fast time results show that variations to the amplitude and phase are correlated to DC supply transients, while long time characteristics are correlated to temperature changes.
Document ID
20130001822
Document Type
Conference Paper
External Source(s)
Authors
Thrivikraman, Tushar (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Perkovic-Martin, Dragana (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Jenabi, Masud (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
August 27, 2013
Publication Date
June 22, 2012
Subject Category
Communications and Radar
Meeting Information
79th ARFTG Microwave Measurement Conference(Montreal)
Distribution Limits
Public
Copyright
Other
Keywords
high-power amplifier (HPA)
in-situ data processing
transmit/receive module (TRM)