| Presentation | 2021-09-10 Relationship between OAM Modes and MIMO Modes of Double Ring Circular Array Hideaki Sugiura, Takuichi Hirano, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The MIMO eigenmodes generated from double ring circular array antennas was compared with Orbital Angular Momentum (OAM) modes. By calculating the array factors with the MIMO eigenvectors as the weighting coefficients, uniform excitation was obtained as the principal mode, and the mode in which the phase was rotated by an integral multiple of 360 ° in the circumferential direction was obtained as the higher-order modes. In addition, a non-null beam with a non-uniform distribution, which was not obtained in a single ring circular array, was observed. Non-null beams were observed in circular arrays with two or more rings even when the distance between transmission and reception, the number of elements, and the element arrangement were changed. The presence of the non-null beam may enable communication at longer distances than conventional OAM. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Double ring circular array / OAM / MIMO / Eigenmode / Array factor / Gain |
| Paper # | MW2021-35 |
| Date of Issue | 2021-09-02 (MW) |
| Conference Information | |
| Committee | MW / AP |
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| Conference Date | 2021/9/9(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave, Millimeter wave |
| Chair | Noriharu Suematsu(Tohoku Univ.) / Hiroshi Yamada(Niigata Univ.) |
| Vice Chair | Tadashi Kawai(Univ. of Hyogo) / Kensuke Okubo(Okayama Prefectural Univ.) / Hideyuki Nakamizo(Mitsubishi Electric) / Mitoshi Fujimoto(Fukui Univ) |
| Secretary | Tadashi Kawai(Saitama Univ.) / Kensuke Okubo(Toshiba) / Hideyuki Nakamizo(NTT DOCOMO) / Mitoshi Fujimoto(National Defense Academy) |
| Assistant | Naoki Hasegawa(Softbank) / Kosuke Katayama(Waseda Univ.) / Dr. Kim(Niigata Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Microwaves / Technical Committee on Antennas and Propagation |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Relationship between OAM Modes and MIMO Modes of Double Ring Circular Array |
| Sub Title (in English) | |
| Keyword(1) | Double ring circular array |
| Keyword(2) | OAM |
| Keyword(3) | MIMO |
| Keyword(4) | Eigenmode |
| Keyword(5) | Array factor |
| Keyword(6) | Gain |
| 1st Author's Name | Hideaki Sugiura |
| 1st Author's Affiliation | Tokyo City University(TCU) |
| 2nd Author's Name | Takuichi Hirano |
| 2nd Author's Affiliation | Tokyo City University(TCU) |
| Date | 2021-09-10 |
| Paper # | MW2021-35 |
| Volume (vol) | vol.121 |
| Number (no) | MW-169 |
| Page | pp.pp.12-17(MW), |
| #Pages | 6 |
| Date of Issue | 2021-09-02 (MW) |