| Presentation | 2020-09-25 Miniaturization of a 256 × 256 Large-Scale MIMO Antenna Koichi Ogawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Previously, we have presented a 256 × 256 large-scale MIMO antenna that achieves an over-100 Gbps channel capacity over the full-azimuth coverage. This antenna comprises four sets of 64 × 64 MIMO antennas squarely arranging in a two-dimensional manner, resulting in some drawbacks from the viewpoint of practical applications due to a large occupied space. In another R&D activity, on the other hand, the authors have examined a method of achieving a small-sized 128×128 MIMO array by means of the double-ring structure of 64 × 64 MIMO arrays, successfully attaining a 85 %-channel capacity of a non-miniaturized 128×128 MIMO array. By utilizing all of the R&D resources that the authors have accumulated so far, the prime objective of this paper is to achieve a considerable reduction in the occupied space when a 256 × 256 large-scale MIMO antenna is used in a realistic use scenario, for instance, when it is mounted on a roof of a car. A particular emphasis is placed on gaining a good knowledge about the design method of a large-scale MIMO antenna by comparing its performance in two and three-dimensional configurations. Further, a novel approach that can provide a low correlation between subchannels is presented, from which we discuss the procedure for carrying out the miniaturization of large-scale MIMO arrays, aiming at accomplishing several hundreds of gigabits capacity in any direction in azimuth for the forthcoming 6G mobile communications. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Large-scale MIMO antenna / Miniaturization / Double-ring structure / EM coupling / Correlation |
| Paper # | AP2020-67 |
| Date of Issue | 2020-09-17 (AP) |
| Conference Information | |
| Committee | MW / AP |
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| Conference Date | 2020/9/24(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave, Millimeter wave, Antennas and Propagation |
| Chair | Yoshinori Kogami(Utsunomiya Univ.) / Qiang Chen(Tohoku Univ.) |
| Vice Chair | Tadashi Kawai(Univ. of Hyogo) / Kensuke Okubo(Okayama Prefectural Univ.) / Shintaro Shinjo(Mitsubishi Electric) / Satoru Kurokawa(AIST) |
| Secretary | Tadashi Kawai(Fujitsu Labs.) / Kensuke Okubo(Saitama Univ.) / Shintaro Shinjo(Tokyo Univ. of Agric. & Tech.) / Satoru Kurokawa(NTT DOCOMO) |
| Assistant | Kyoya Takano(Tokyo Univ. of Science) / Naoki Hasegawa(Softbank) / 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) | Miniaturization of a 256 × 256 Large-Scale MIMO Antenna |
| Sub Title (in English) | |
| Keyword(1) | Large-scale MIMO antenna |
| Keyword(2) | Miniaturization |
| Keyword(3) | Double-ring structure |
| Keyword(4) | EM coupling |
| Keyword(5) | Correlation |
| 1st Author's Name | Koichi Ogawa |
| 1st Author's Affiliation | Toyama University(Toyama Univ.) |
| Date | 2020-09-25 |
| Paper # | AP2020-67 |
| Volume (vol) | vol.120 |
| Number (no) | AP-171 |
| Page | pp.pp.162-167(AP), |
| #Pages | 6 |
| Date of Issue | 2020-09-17 (AP) |