Title:
フィード装置/反射器のデフォーカスおよび反射器のジンバル動作による成形された反射器の軌道上における再構成方法および通信システム
Document Type and Number:
Japanese Patent JP3592914
Kind Code:
B2
Abstract:
A system and method for changing the radiation pattern of an antenna assembly (14) of a satellite (12) in orbit is provided. The antenna assembly (14) includes a reflector antenna (16) fed by a feed assembly (18). The reflector antenna transmits and receives signals within a radiation pattern. The reflector antenna (16) and the feed assembly (18) are movably mounted to a sliding mechanism (24) so that they can be displaced with respect to one another. The displacement causes defocusing as the reflector antenna (16) is displaced from the focus point. The defocusing causes the radiation pattern to become more compact or broadened. Thus, the radiation pattern of the satellite (12) provided with a single reflector antenna (16) and a single feed element (22) may be changed while the satellite (12) is in orbit.
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Inventors:
Parsa salasee ramanu jam
Louis Earl Farmeria
Cynthia A. Dixon
Miguel A. Estevez
Louis Earl Farmeria
Cynthia A. Dixon
Miguel A. Estevez
Application Number:
JP32478997A
Publication Date:
November 24, 2004
Filing Date:
November 26, 1997
Export Citation:
Assignee:
Hughes Electronics Corporation
International Classes:
H01Q19/18; H01Q1/18; H01Q1/28; H01Q3/16; H01Q3/18; H01Q3/20; H01Q15/14; (IPC1-7): H01Q3/16; H01Q1/28; H01Q19/18
Domestic Patent References:
| JP6318817A | ||||
| JP832346A | ||||
| JP2276981A | ||||
| JP5273340A | ||||
| JP3192803A | ||||
| JP6164231A |
Attorney, Agent or Firm:
Takehiko Suzue
Sadao Muramatsu
Atsushi Tsuboi
Ryo Hashimoto
Toshio Shirane
Sadao Muramatsu
Atsushi Tsuboi
Ryo Hashimoto
Toshio Shirane