講演抄録/キーワード |
講演名 |
2010-05-14 11:25
Onboard Antennas and Simulation of Service Availability for 21-GHz Band Broadcasting Satellite Susumu Nakazawa・Masafumi Nagasaka・Shoji Tanaka・○Kazuyoshi Shogen(NHK) AP2010-29 |
抄録 |
(和) |
Satellite broadcasting in the 21-GHz band is expected to transmit large-capacity signal by exploiting its wide bandwidth of 600MHz. However, it suffers from large rain attenuation. In order to compensate it, we have been studying rain fading mitigation techniques. In this paper, we show a method to control the radiation pattern dynamically in accordance with the movement of the rain area assuming array-fed reflector antenna using 61 horns. We compared the outage time using dynamically controlled radiation pattern (reconfigurable beam) formed by the array-fed reflector antenna with that using fixed radiation pattern formed by shaped reflector antenna while assuming the same input power to the antenna. According to the simulation during 7days, the accumulated outage time using dynamic radiation pattern was much less than 50% compared to that using static radiation pattern.. |
(英) |
Satellite broadcasting in the 21-GHz band is expected to transmit large-capacity signal by exploiting its wide bandwidth of 600MHz. However, it suffers from large rain attenuation. In order to compensate it, we have been studying rain fading mitigation techniques. In this paper, we show a method to control the radiation pattern dynamically in accordance with the movement of the rain area assuming array-fed reflector antenna using 61 horns. We compared the outage time using dynamically controlled radiation pattern (reconfigurable beam) formed by the array-fed reflector antenna with that using fixed radiation pattern formed by shaped reflector antenna while assuming the same input power to the antenna. According to the simulation during 7days, the accumulated outage time using dynamic radiation pattern was much less than 50% compared to that using static radiation pattern.. |
キーワード |
(和) |
/ / / / / / / |
(英) |
Satellite broadcasting / 21-GHz band / Rain attenuation / Fading mitigation / Array-fed reflector antenna / / / |
文献情報 |
信学技報, vol. 110, no. 23, AP2010-29, pp. 87-92, 2010年5月. |
資料番号 |
AP2010-29 |
発行日 |
2010-05-06 (AP) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
AP2010-29 |