| Presentation | 2003/9/4 Radiation Characteristics of Proximity Coupled Patch Array Antenna for ETS-VIII Applications Toshimitsu TANAKA, David DELAUNE, Tetuko S. S. Josaphat, Teruo ONISHI, Hiroyuki YOSHIMURA, Koichi ITO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The National Space Development Agency (NASDA) of Japan has planned to launch the geostationary satellite called Engineering Test Satellite-VIII (ETS-VIII) in 2004. ETS-VIII will conduct orbital experiments on mobile satellite communications aiming at multimedia applications at the S-band frequency. In this paper, the feasibility of reaching a relatively high value of gain at low elevation angle on the whole azimuth plane, by use of an electronically controlled patch array antenna, is discussed. This antenna does not require a phase shifter and the beam is switched by use of a simple "on", "off" feeding method. Precisely here, a 4-element patch array antenna using proximity coupled feeding and stacked dielectric substrates, whose relative permittivities are 3.55 and 2.17, is analyzed and its numerical performances obtained by the Method of Moments are investigated. As a result, it was confirmed that a minimum gain more than 6 dBic and a maximum axial ratio less than 3 dB could be obtained for an elevation angle varying from 38°to 70°over the whole azumuth range. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mobile Satellite Communications / ETS-VIII / Beam Switching / Patch Array Antenna / Proximity Coupling / Numerical Analysis |
| Paper # | A・P2003-133 |
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| Conference Information | |
| Committee | AP |
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| Conference Date | 2003/9/4(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Antennas and Propagation (A・P) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Radiation Characteristics of Proximity Coupled Patch Array Antenna for ETS-VIII Applications |
| Sub Title (in English) | |
| Keyword(1) | Mobile Satellite Communications |
| Keyword(2) | ETS-VIII |
| Keyword(3) | Beam Switching |
| Keyword(4) | Patch Array Antenna |
| Keyword(5) | Proximity Coupling |
| Keyword(6) | Numerical Analysis |
| 1st Author's Name | Toshimitsu TANAKA |
| 1st Author's Affiliation | Graduate School of Science and Technology, Chiba University() |
| 2nd Author's Name | David DELAUNE |
| 2nd Author's Affiliation | Graduate School of Science and Technology, Chiba University |
| 3rd Author's Name | Tetuko S. S. Josaphat |
| 3rd Author's Affiliation | Faculity of Engineering, Chiba University:Center for Frontier Electronics and Photonics, Chiba University |
| 4th Author's Name | Teruo ONISHI |
| 4th Author's Affiliation | Graduate School of Science and Technology, Chiba University |
| 5th Author's Name | Hiroyuki YOSHIMURA |
| 5th Author's Affiliation | Faculty of Engineering, Chiba University |
| 6th Author's Name | Koichi ITO |
| 6th Author's Affiliation | Graduate School of Science and Technology, Chiba University:Researc Center for Frontier Medical Engineering, Chiba University |
| Date | 2003/9/4 |
| Paper # | A・P2003-133 |
| Volume (vol) | vol.103 |
| Number (no) | 297 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |