| Presentation | 2016-11-17 A 3D-Printed T-Junction OMT with an offset stepped post Hidenori Yukawa, Yu Ushijima, Motomi Abe, Naofumi Yoneda, Moriyasu Miyazaki, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Waveguide OMT (Ortho-Mode-Transducer) is one of key components of antenna feed systems for satellite communication. It works to separate or combine vertical- or horizontal- linear polarizations. Recently, a T-junction OMT has been reported. It is formed by a short circuited common circular waveguide section exhibiting two rectangular waveguide ports at the short circuit situated at opposed side walls. Furthermore, it consists of not only a stepped post but also ridges. The use of the ridges has disadvantages, such as the lack of robust performances and the power capability. We propose a T-junction OMT without ridges. It consists of an offset stepped post. The offset stepped post contributes to the matching of two rectangular ports. The structure without ridges is simple and makes it possible to achieve robust performances and to support a high power rating. We fabricated a proposed T-junction OMT in a single piece of an aluminum alloy, using a commercial metal 3D-printer. The target relative bandwidth is 8% in the K-band. The measured results demonstrated a return loss of 22dB and a loss of 0.3dB. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Antenna feed systems / waveguide / OMT / 3D-printer |
| Paper # | MW2016-124 |
| Date of Issue | 2016-11-10 (MW) |
| Conference Information | |
| Committee | MW |
|---|---|
| Conference Date | 2016/11/17(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Saga Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave Technologies |
| Chair | Yohei Ishikawa(Kyoto Univ.) |
| Vice Chair | Takao Kuki(Kokushikan Univ.) / Kenjiro Nishikawa(Kagoshima Univ.) / Kenichi Tajima(Mitsubishi Electric) |
| Secretary | Takao Kuki(Panasonic) / Kenjiro Nishikawa(Tokyo Inst. of Tech.) / Kenichi Tajima |
| Assistant | Naoto Sekiya(Univ. of Yamanashi) / Satoshi Ono(Univ. of Electro-Comm.) |
| Paper Information | |
| Registration To | Technical Committee on Microwaves |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A 3D-Printed T-Junction OMT with an offset stepped post |
| Sub Title (in English) | |
| Keyword(1) | Antenna feed systems |
| Keyword(2) | waveguide |
| Keyword(3) | OMT |
| Keyword(4) | 3D-printer |
| 1st Author's Name | Hidenori Yukawa |
| 1st Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
| 2nd Author's Name | Yu Ushijima |
| 2nd Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
| 3rd Author's Name | Motomi Abe |
| 3rd Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
| 4th Author's Name | Naofumi Yoneda |
| 4th Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
| 5th Author's Name | Moriyasu Miyazaki |
| 5th Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
| Date | 2016-11-17 |
| Paper # | MW2016-124 |
| Volume (vol) | vol.116 |
| Number (no) | MW-310 |
| Page | pp.pp.43-48(MW), |
| #Pages | 6 |
| Date of Issue | 2016-11-10 (MW) |