| Presentation | 2007-04-20 Shapable Boosted Beam for Onboard Phased Array Antenna in 21 GHz-band Shoji TANAKA, Susumu NAKAZAWA, Naoto KOGOU, Kazuyoshi SHOGEN, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Satellite broatcasting in the 21-GHz band is expected to broadcast wide-band programs such as Super Hi-Vision, which is ultra-high-definition with more than 4000 scanning lines. The 21-GHz band, however, suffers from about three times heavier rain attenuation in terms of decibels than the 12-GHz band. This paepr describes a mitigation technique using onboard array-fed reflector antennas that can boost the radiation power only in the areas with heavy rainfall (Boosted beam), while maintaining a constant level of radiation power in the rest of the service area (Nationwide beam). So far, the shapes of the rainy area were assumed to be circular. In this report, the boosted beams were formed according to the shape of rainy area based on the Radar-AMeDAS (radar analysis and Automated Meteorological Data Acquisition System) |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | 21GHz-band broadcasting satellite system / mitigation technique for rain attenuation / array-fed reflector antenna / Shapable beam |
| Paper # | SAT2007-2 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2007/4/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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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) | Shapable Boosted Beam for Onboard Phased Array Antenna in 21 GHz-band |
| Sub Title (in English) | |
| Keyword(1) | 21GHz-band broadcasting satellite system |
| Keyword(2) | mitigation technique for rain attenuation |
| Keyword(3) | array-fed reflector antenna |
| Keyword(4) | Shapable beam |
| 1st Author's Name | Shoji TANAKA |
| 1st Author's Affiliation | NHK Science and Technical Research Laboratories() |
| 2nd Author's Name | Susumu NAKAZAWA |
| 2nd Author's Affiliation | NHK Science and Technical Research Laboratories |
| 3rd Author's Name | Naoto KOGOU |
| 3rd Author's Affiliation | NHK Science and Technical Research Laboratories |
| 4th Author's Name | Kazuyoshi SHOGEN |
| 4th Author's Affiliation | NHK Science and Technical Research Laboratories |
| Date | 2007-04-20 |
| Paper # | SAT2007-2 |
| Volume (vol) | vol.107 |
| Number (no) | 11 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |