| Presentation | 2015-10-22 A Coaxial OMT with TE21-Mode Coupler Hidenori Yukawa, Shin-ichi Yamamoto, Tetsuya Katase, Shuji Nuimura, Naofumi Yoneda, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Waveguide orthomode junction (OMJ) is one of key components of antenna feed systems for satellite communication. It works in two frequency bands to separate or combine vertical- or horizontal- linear polarizations or left- or right- circular polarizations. A coaxial structure is used for reduction of filters and miniaturization. However tracking systems comprised of coaxial structure have not ever almost reported. We propose a coaxial ortho mode transducer with TE21-mode coupler to realize a tracking function. The structure consists of a turn style junction type OMT and a TE21-mode coupler with tapered cylindrical outer conductor. The stepped inner conductor of coaxial structure contributes to the matching of both the OMT and the TE21-mode coupler so it makes possible to arrange them closely. We fabricated a proposed ortho mode transducer with transmission bandwidth of 10%. The measured results demonstrated a return loss of 20dB, TE21-mode coupling coefficient of 14dB. In this report, we show the design method and the measurement results. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | antenna feed systems / waveguide / coaxial / omt / coupler |
| Paper # | EMCJ2015-63,MW2015-102,EST2015-73 |
| Date of Issue | 2015-10-15 (EMCJ, MW, EST) |
| Conference Information | |
| Committee | EMCJ / IEE-EMC / MW / EST |
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| Conference Date | 2015/10/22(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Sakura Hall, Katahira Campus, Tohoku Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave, Electromagnetic simulation, EMC, etc. |
| Chair | Hideaki Sone(Tohoku Univ.) / Ken Kawamata(Tohoku Gakuin University) / Yohei Ishikawa(Kyoto Univ.) / Tatsuya Kashiwa(Kitami Inst. of Tech.) |
| Vice Chair | Osami Wada(Kyoto Univ.) / / Masashi Nakatsugawa(NTT) / Takao Kuki(Kokushikan Univ.) / Kenjiro Nishikawa(Kagoshima Univ.) / Hideaki Kimura(NTT) / Akimasa Hirata(Nagoya Inst. of Tech.) / Shinichiro Ohnuki(Nihon Univ.) |
| Secretary | Osami Wada(Okayama Univ.) / (Hitachi) / Masashi Nakatsugawa(Osaka University) / Takao Kuki(National Maritime Research Institute) / Kenjiro Nishikawa(NTT) / Hideaki Kimura(Panasonic) / Akimasa Hirata(Tokyo Inst. of Tech.) / Shinichiro Ohnuki(Muroran Inst. of Tech.) |
| Assistant | Atsuhiro Takahashi(Toyota Central R&D Labs.) / Yoshiki Kayano(Akita Univ.) / Yusaku Katsube(Hitachi) / Yu-chi Hayashi(Tohoku Gakuin University) / Ryo Ishikawa(Univ. of Electro-Comm.) / Naoto Sekiya(Univ. of Yamanashi) / Atsushi Kezuka(ENRI) / Kenji Taguchi(Kitami Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Electromagnetic Compatibility / Technical Meeting on Electromagnetic Compatibility / Technical Committee on Microwaves / Technical Committee on Electronics Simulation Technology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Coaxial OMT with TE21-Mode Coupler |
| Sub Title (in English) | |
| Keyword(1) | antenna feed systems |
| Keyword(2) | waveguide |
| Keyword(3) | coaxial |
| Keyword(4) | omt |
| Keyword(5) | coupler |
| 1st Author's Name | Hidenori Yukawa |
| 1st Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
| 2nd Author's Name | Shin-ichi Yamamoto |
| 2nd Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
| 3rd Author's Name | Tetsuya Katase |
| 3rd Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
| 4th Author's Name | Shuji Nuimura |
| 4th Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
| 5th Author's Name | Naofumi Yoneda |
| 5th Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
| Date | 2015-10-22 |
| Paper # | EMCJ2015-63,MW2015-102,EST2015-73 |
| Volume (vol) | vol.115 |
| Number (no) | EMCJ-259,MW-260,EST-261 |
| Page | pp.pp.23-28(EMCJ), pp.23-28(MW), pp.23-28(EST), |
| #Pages | 6 |
| Date of Issue | 2015-10-15 (EMCJ, MW, EST) |