並列タイトル等The development of circular polarized doughnut-shaped beam antenna for MMO
タイトル(掲載誌)宇宙航空研究開発機構特別資料: 平成16年度総合技術研究本部宇宙領域宇宙科学研究本部合同研究成果報告書:人工衛星系基盤技術 = JAXA Special Publication: FY2004 Report of Joint Research Achievements of the Space Division of Institute of Aerospace Technology and Institute of Space and Astronautical Science: Basic Technologies of Satellite Systems
一般注記The BepiColombo is the international cooperation between ESA and JAXA in order to explore the planet Mercury. This mission comprises two science elements, MPO to be produced by ESA and MMO to be produced by JAXA. The MMO communication system has two antennas for X-band telemetry and command links. High Gain Antenna (HGA) pointed by Antenna Despun Motor (ADM) and Antenna Pointing Mechanism (APM) is normally used for communication. However, the beam-with of HGA is so narrow that the Medium Gain Antenna (MGA) is also onboard for emergency TLM and CMD link. The radiation characteristics of MGA are required for omnidirectional pattern in the spin plane, circular polarization and wide frequency band (about 17 percent). We propose Dual-reflector Antenna consists of parabola reflector and conical reflector as the MMO-MGA and manufactured EM-MGA last year. It provides a circular polarized donut-shaped radiation pattern and it's satisfied with requirements. This paper mainly reports about the electrical features of MGA and compares computed results with measurements.
資料番号: AA0049054021
レポート番号: JAXA-SP-05-008
一次資料へのリンクURLhttps://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6277&item_no=1&attribute_id=31&file_no=1
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)
提供元機関・データベース宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ