| Presentation | 2022-01-21 Analysis and design of a circularly-polarized element on a parallel plate waveguide with perpendicular corporate-feed Hiroki Nishimoto, Takashi Tomura, Jiro Hirokawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In a conventional corporate-feed waveguide circularly polarized slot array antenna, plural thin metal plates are stacked and diffusion bonded. A problem is that the number of the plates is large due to the metal-wall cavity and the thick degenerated apertures in the radiation part. To solve this problem, we propose the radiation part in which plural thin layers of degenerated apertures are stacked with spaces among them without bonding. We aim to simplify the structure and maintain the characteristics. Conventionally, we designed using a general-purpose software. However, because of a large number of parameters and huge amount of time required for the analysis, we create a fast analysis program using the method of moments specified for the structure, and use a genetic algorithm for broadband design. As a result, 12.9% bandwidth for VSWR less than 1.5 and axial ratio lower than 3 dB are obtained with a small number of thin metal plates. In addition, the analysis time is reduced by 90.3% compared with general-purpose software. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | circular-polarization / 60GHz-band / millimeter wave band / waveguide slot array antenna / method of moments / genetic algorithm |
| Paper # | AP2021-150 |
| Date of Issue | 2022-01-13 (AP) |
| Conference Information | |
| Committee | AP / WPT |
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| Conference Date | 2022/1/20(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kenmin-Fureai-Kaikan |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Radio propagation, Wireless transmission technology, Antennas and Propagation |
| Chair | Hiroshi Yamada(Niigata Univ.) / Toshio Ishizaki(Ryukoku Univ.) |
| Vice Chair | Mitoshi Fujimoto(Fukui Univ) |
| Secretary | Mitoshi Fujimoto(NTT DOCOMO) / (National Defense Academy) |
| Assistant | Dr. Kim(Niigata Univ.) / Yoshiaki Narusue(Univ. of Tokyo) / Yuki Tanaka(Panasonic) |
| Paper Information | |
| Registration To | Technical Committee on Antennas and Propagation / Technical Committee on Wireless Power Transfer |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Analysis and design of a circularly-polarized element on a parallel plate waveguide with perpendicular corporate-feed |
| Sub Title (in English) | |
| Keyword(1) | circular-polarization |
| Keyword(2) | 60GHz-band |
| Keyword(3) | millimeter wave band |
| Keyword(4) | waveguide slot array antenna |
| Keyword(5) | method of moments |
| Keyword(6) | genetic algorithm |
| 1st Author's Name | Hiroki Nishimoto |
| 1st Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| 2nd Author's Name | Takashi Tomura |
| 2nd Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| 3rd Author's Name | Jiro Hirokawa |
| 3rd Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| Date | 2022-01-21 |
| Paper # | AP2021-150 |
| Volume (vol) | vol.121 |
| Number (no) | AP-330 |
| Page | pp.pp.86-91(AP), |
| #Pages | 6 |
| Date of Issue | 2022-01-13 (AP) |