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http://dx.doi.org/10.12673/jant.2022.26.6.487

Design and Development of 200 W TRM on-board for NEXTSat-2 X-band SAR  

Jeeheung Kim (Satellite Technology Research Center, Korea Advanced Institute of Science and Technology)
Hyuntae Choi (Satellite Technology Research Center, Korea Advanced Institute of Science and Technology)
Jungsu Lee (Satellite Technology Research Center, Korea Advanced Institute of Science and Technology)
Tae Seong Jang (Satellite Technology Research Center, Korea Advanced Institute of Science and Technology)
Publication Information
Journal of Advanced Navigation Technology / v.26, no.6, 2022 , pp. 487-495 More about this Journal
Abstract
This paper describes the design and development of a high-power transmit receive module(TRM) for mounting on X-band synthetic aperture radar(SAR) of the NEXTSat-2. The TRM generates a high-power pulse signal with a bandwidth of 100 MHz in the target frequency range of X-band and amplifies a low-noise on the received signal. Tx. path of the TRM has output signal level of more than 200 watts (53.01 dB), pulse droop of 0.35 dB, signal strength change of 0.04 dB during transmission signal output, and phase change of 1.7 ˚. Rx. path has noise figure of 3.99 dB and gain of 37.38 ~ 37.46 dB. It was confirmed the TRM satisfies all requirements. The TRM mounted on the NEXTSat-2 flight model(FM) which will be launched using the KSLV-II (Nuri).
Keywords
Gallium Nitride; NEXTSat-2; Synthetic Aperture Radar; Transmit Receive Module;
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