Verification of RF Performances of Ka-Band On-board Switching Transponder for COMS

Yong-Min Lee, Jin-Ho Jo, S. Lee
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Abstract

After the development of transponder equipment as flight model, a series of evaluation processes are performed to verify and identify them on system level if any of the performance parameters are degraded or changed. The results of these evaluations are a valuable data base during the test of the payload on the ground and for future anomaly investigations in orbit. This paper describes the verification activities required to evaluate the RF performances of transponder equipment itself and Ka-band on-board switching transponder subsystem for COMS. ETRI completed the design effort and has finished the development of transponder equipment according to the communications payload development milestone and the Ka-band on-board switching transponder is being assembled and under testing the initial RF performances so far. A brief outline of the project work, the design of the Ka-band communications payloads, and functional capability including three channels of on-board switching transponders and two multi-beam antennas configuration will be also addressed.
COMS ka波段车载开关应答器射频性能验证
在应答器设备发展为飞行模型后,如果任何性能参数降级或改变,则进行一系列评估过程,以在系统级验证和识别它们。这些评估结果为有效载荷的地面测试和未来轨道异常调查提供了宝贵的数据基础。本文描述了评估COMS应答器设备本身和ka波段机载交换应答器子系统射频性能所需的验证活动。ETRI完成了设计工作,并根据通信有效载荷开发里程碑完成了应答器设备的开发,ka波段机载交换应答器正在组装中,目前正在测试初始RF性能。项目工作的简要概述、ka波段通信有效载荷的设计和功能能力,包括三个通道的板载交换转发器和两个多波束天线配置。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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