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Development of 275-500 GHz super-wideband waveguide Ortho-Mode Transducer

Research Project

Project/Area Number 17H07405
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Astronomy
Research InstitutionJapan Aerospace EXploration Agency

Principal Investigator

Hasegawa Yutaka  国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 宇宙航空プロジェクト研究員 (70802750)

Research Collaborator OGAWA hideo  
MAEZAWA hiroyuki  
OCHIAI satoshi  
SATO shigeru  
WATANABE issei  
KIMURA kimihiro  
MATSUSHITA koji  
ISHINO masayuki  
Project Period (FY) 2017-08-25 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords電波 / 天文学 / 導波管 / 直交偏波分離器 / 広帯域 / 高精度 / フランジ / 観測装置 / 導波管回路 / 直行偏波分離器 / 円偏波分離器 / サブミリ波帯 / サブミリ波 / 接続フランジ / 電波天文学 / 受信機
Outline of Final Research Achievements

One of the issues in recent development of heterodyne receivers, which widely used as radio astronomical observation devices, is the extension of the observation bandwidth to more than 50% fractional bandwidth.
In this research, we aimed at the realization of the ultra-wideband Ortho-Mode Transducer (OMT) which covering 275-500 GHz (58%), where the observation demand is very strong. To do this, we worked on the solution of the electrical and structural design problems that obstructs it.
As a result, we succeeded in the realization of the 275-500 GHz OMT, with solving some structural problems; for example, we have realized a new connector that can reduce the device connection position error to about 3 μm, which was about 10 μm in the past. Also, these technologies are applicable to higher frequency bands.

Academic Significance and Societal Importance of the Research Achievements

本研究により開発された、従来より高い加工精度でのデバイス製造技術や、従来より高い精度での位置合わせが可能な接続機構などにより、今後実施される 300 GHz 超のサブミリ波帯デバイス開発における金属切削加工上の問題は大きく取り除かれた。
これにより、強い需要があるサブミリ波帯天文観測に対する装置開発上の解を容易に提案できるようになり、今後の天文学の進展への大きな貢献が期待できる。また、無線通信などでも将来的に 300 GHz 超の高周波化が取り組まれる見込みであるが、そうした分野への貢献も十分期待できる。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • Research Products

    (3 results)

All 2018

All Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Development of small and high accuracy flanges for submm WG devices2018

    • Author(s)
      Yutaka Hasegawa, Hideo Ogawa, Hiroyuki Maezawa, Satoshi Ochiai, Sigeru Sato, Issei Watanabe, Koji Matsusita, Masayuki Ishino
    • Organizer
      19th East Asia Submillimeter-wave Receiver Technology Workshop
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 次世代サブミリ波帯導波管回路の開発2018

    • Author(s)
      長谷川豊、小川英夫、前澤裕之、落合啓、佐藤滋、渡邊一世、松下幸司、石野雅之
    • Organizer
      ミリ波サブミリ波受信機ワークショップ」および第4回「理研NICT合同テラヘルツワークショップ
    • Related Report
      2017 Annual Research Report
  • [Presentation] SMILES-2 630/770 GHz SIS 受信機のための統合導波管回路の開発2018

    • Author(s)
      長谷川豊、西堀俊幸、落合啓、鵜澤佳徳、入交芳久、前澤裕之
    • Organizer
      日本天文学会 2018 年度春季年会
    • Related Report
      2017 Annual Research Report

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Published: 2017-08-25   Modified: 2020-03-30  

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