| Presentation | 1995/7/20 Beam Synthesis of Large Antenna for S-band Satellite Mobile Communications and Broadcasting System Kenichi Haryu, Yasuhiko Yamasa, Teruki Okamoto, Yuichi Otsu, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | ASC has been developing S-band satellite mobile communications and broadcasting system of the future. One of the developments is a large deployable antenna which has a 10m diameter mesh reflector. This paper presents the radiation characteristics of a large deployable antenna. In communication system, we have divided the Japanese mainland into five coverage areas and synthesized the shaped multibeam which correspond to each coverage area. Moreover, for frequency re-use, approximately -26dB isolation at intervals of two beam is obtained. In broadcasting system, shaped beam considering radiation characteristics of vehicle antenna is presented. For an example, a switching plane array antennna for vehicles is assumed on the ground, and because that its gain on the low elevation angle is 3dB lower than high angle, a shaped beam with 3dB slope was made to compensate for its radiation characteristics. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Satellite Mobile Communications / Shaped Beam / Multibeam / Large Deployable Antenna |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 1995/7/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Satellite Telecommunications (SAT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Beam Synthesis of Large Antenna for S-band Satellite Mobile Communications and Broadcasting System |
| Sub Title (in English) | |
| Keyword(1) | Satellite Mobile Communications |
| Keyword(2) | Shaped Beam |
| Keyword(3) | Multibeam |
| Keyword(4) | Large Deployable Antenna |
| 1st Author's Name | Kenichi Haryu |
| 1st Author's Affiliation | Advanced Space Communications Research Laboratory (ASC)() |
| 2nd Author's Name | Yasuhiko Yamasa |
| 2nd Author's Affiliation | Advanced Space Communications Research Laboratory (ASC) |
| 3rd Author's Name | Teruki Okamoto |
| 3rd Author's Affiliation | Advanced Space Communications Research Laboratory (ASC) |
| 4th Author's Name | Yuichi Otsu |
| 4th Author's Affiliation | Advanced Space Communications Research Laboratory (ASC) |
| Date | 1995/7/20 |
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| Volume (vol) | vol.95 |
| Number (no) | 160 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |