{"created":"2023-06-20T14:39:32.305407+00:00","id":6277,"links":{},"metadata":{"_buckets":{"deposit":"3f34bfec-179e-4777-a488-29f230b30bd7"},"_deposit":{"created_by":1,"id":"6277","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"6277"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00006277","sets":["1887:1893","9:789:1031:1060"]},"author_link":["31629","31630","31632","31631"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"The development of circular polarized doughnut-shaped beam antenna for MMO"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2006-01-20","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"106","bibliographicPageStart":"101","bibliographicVolumeNumber":"JAXA-SP-05-008","bibliographic_titles":[{"bibliographic_title":"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"},{"bibliographic_title":"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","bibliographic_titleLang":"en"}]}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"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.","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0049054021","subitem_description_type":"Other"}]},"item_3_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: JAXA-SP-05-008","subitem_description_type":"Other"}]},"item_3_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構"}]},"item_3_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Japan Aerospace Exploration Agency (JAXA)"}]},"item_3_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1349-113X","subitem_source_identifier_type":"ISSN"}]},"item_3_source_id_24":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11984031","subitem_source_identifier_type":"NCID"}]},"item_3_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"宇宙航空研究開発機構 宇宙科学研究本部　技術開発部"},{"subitem_text_value":"宇宙航空研究開発機構 宇宙科学研究本部　技術開発部"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Technology Development Dept., Institute of Space and Astronautical Science"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Technology Development Dept., Institute of Space and Astronautical Science"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"川原, 康介"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"鎌田, 幸男"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kawahara, Kosuke","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kamata, Yukio","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-01-16"}],"displaytype":"detail","filename":"49054021.pdf","filesize":[{"value":"2.5 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"49054021.pdf","url":"https://jaxa.repo.nii.ac.jp/record/6277/files/49054021.pdf"},"version_id":"6e1afc52-1ce9-4a09-b731-6f2d7bd0af4c"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"ドーナツビームアンテナ","subitem_subject_scheme":"Other"},{"subitem_subject":"円偏波","subitem_subject_scheme":"Other"},{"subitem_subject":"BepiColombo","subitem_subject_scheme":"Other"},{"subitem_subject":"水星","subitem_subject_scheme":"Other"},{"subitem_subject":"アンテナ設計","subitem_subject_scheme":"Other"},{"subitem_subject":"アンテナ利得","subitem_subject_scheme":"Other"},{"subitem_subject":"宇宙探査","subitem_subject_scheme":"Other"},{"subitem_subject":"惑星軌道","subitem_subject_scheme":"Other"},{"subitem_subject":"アンテナ放射パターン","subitem_subject_scheme":"Other"},{"subitem_subject":"水星探査機","subitem_subject_scheme":"Other"},{"subitem_subject":"doughnut-shaped beam antenna","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"circular polarization","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"BepiColombo","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Mercury","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"antenna design","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"antenna gain","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"space exploration","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"planetary orbit","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"antenna radiation pattern","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Mercury Magnetospheric Orbiter","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"technical report","resourceuri":"http://purl.org/coar/resource_type/c_18gh"}]},"item_title":"水星探査機(MMO)搭載用円偏波ドーナツビームアンテナの開発","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"水星探査機(MMO)搭載用円偏波ドーナツビームアンテナの開発"}]},"item_type_id":"3","owner":"1","path":["1060","1893"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"6277","relation_version_is_last":true,"title":["水星探査機(MMO)搭載用円偏波ドーナツビームアンテナの開発"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T07:58:39.667788+00:00"}