| Presentation | 2018-11-21 A Study on Beam Pattern in Horizontal Plane in HAPS System Shoichi Sudo, Kenji Hoshino, Yoshichika Ohta, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A High-Altitude Platform Station (HAPS) has been expected as a new mobile communication platform that realizes ultra-wide coverage area, disaster-resistant networks, and offers radio communication networks which is aimed at three dimensional area including the upper sky where drones fly. Since a HAPS covers ultra-wide coverage area and large traffic, it is necessary that it must configure multi-cell. And it flies around the sky at a constant radius to maintain its service area, so we have to take its motion for granted. Therefore, it is important to study a low-side lobe multi-beam antenna that performs beam control corresponding to the motion of a HAPS and reduces interference between multiple cells. In this paper, we suggest a basic study of horizontal beam pattern characteristics in a HAPS assuming a circular array antenna as a service link antenna for a HAPS, which is excellent in rotational symmetry in the horizontal plane and easy to perform beam forming. Concretely, we clarify the relationship between the antenna gain, the beam width and the side lobe level, and consider the antenna parameters that can realize the low side lobe while maintaining the desired beam width and antenna gain. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | HAPS / Circular array antenna / Sidelobe reduction / pseudo‐inverse |
| Paper # | AP2018-119 |
| Date of Issue | 2018-11-13 (AP) |
| Conference Information | |
| Committee | RCS / AP |
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| Conference Date | 2018/11/20(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Okinawa Industry Support Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. |
| Chair | Tomoaki Otsuki(Keio Univ.) / Jiro Hirokawa(Tokyo Tech.) |
| Vice Chair | Eisuke Fukuda(Fujitsu Labs.) / Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) / Ryo Yamaguchi(SoftBank) |
| Secretary | Eisuke Fukuda(Hokkaido Univ.) / Satoshi Suyama(NTT) / Fumiaki Maehara(Saitama Univ.) / Ryo Yamaguchi(Mitsubishi Electric) |
| Assistant | Kazushi Muraoka(NTT DOCOMO) / Shinsuke Ibi(Osaka Univ.) / Hiroshi Nishimoto(Mitsubishi Electric) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Michitaka Ameya(AIST) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / 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) | A Study on Beam Pattern in Horizontal Plane in HAPS System |
| Sub Title (in English) | |
| Keyword(1) | HAPS |
| Keyword(2) | Circular array antenna |
| Keyword(3) | Sidelobe reduction |
| Keyword(4) | pseudo‐inverse |
| 1st Author's Name | Shoichi Sudo |
| 1st Author's Affiliation | HAPS Mobile Inc.(HAPS Mobile) |
| 2nd Author's Name | Kenji Hoshino |
| 2nd Author's Affiliation | HAPS Mobile Inc.(HAPS Mobile) |
| 3rd Author's Name | Yoshichika Ohta |
| 3rd Author's Affiliation | HAPS Mobile Inc.(HAPS Mobile) |
| Date | 2018-11-21 |
| Paper # | AP2018-119 |
| Volume (vol) | vol.118 |
| Number (no) | AP-310 |
| Page | pp.pp.101-106(AP), |
| #Pages | 6 |
| Date of Issue | 2018-11-13 (AP) |