Title:
COMMUNICATION EQUIPMENT
Document Type and Number:
Japanese Patent JP2001102859
Kind Code:
A
Abstract:
To suppress decrease of antenna gain without affecting the reliability in operation.
A main system 4-0 and a reserve system 4-1 are respectively provided with dedicated feeders 5 and 6 so that a changeover switch for switching the feeders in the case of redundancy switching can be unnecessitated. The feeders 5 and 6 share a reflector 7 and further the feeders 5 and 6, and the reflector 7 are arranged so that the directions of beams respectively formed by the feeders 5 and 6 can be symmetric to a point just under an artificial satellite 100. In the case of redundancy switching, the artificial satellite 100 is rotated 180° around the point just under the satellite and before and after redundancy switching to match the beam directions.
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Inventors:
OKUMURA MINORU
Application Number:
JP28004999A
Publication Date:
April 13, 2001
Filing Date:
September 30, 1999
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H01Q19/17; (IPC1-7): H01Q19/17
Attorney, Agent or Firm:
Takehiko Suzue (6 outside)