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Title:
COMPACT FOLDABLE OPTICAL ANTENNA SYSTEM FOR PROVIDING ADJACENT HIGH GAIN ANTENNA BEAM
Document Type and Number:
Japanese Patent JP2000216624
Kind Code:
A
Abstract:

To provide a satellite reflection antenna system where each antenna beam demarcates individual arrival range cell in a beam arrival range and, antenna feeds, a sub reflector and a main reflector are placed and oriented so that each antenna beam nearly symmetrically shaped is supplied adjacent over the arrival range on the basis of the global scale.

A feed array 22 includes a plurality of feeds that are coupled with a feed network acting like combining radiation beams of a pre-selected feed number so as to produce a plurality of composite radiation beams 23 shaped to have a prescribed contour. Each composite radiation beam is oriented to be made incident on each predetermined location of a sub reflector 27 that orients the radiation beams to a main reflector 25 and the main reflector reflects each composite radiation beam in a pre-selected direction.


Inventors:
BROAS ROMULO F J
BRUNDRETT DAVID L
CHANDLER CHARLES W
WU TE-KAO
Application Number:
JP2000007360A
Publication Date:
August 04, 2000
Filing Date:
January 17, 2000
Export Citation:
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Assignee:
TRW INC
International Classes:
H01Q15/14; H01Q19/17; H01Q19/18; H01Q19/19; H01Q25/00; H04B7/185; (IPC1-7): H01Q19/17; H04B7/185; H01Q19/18; H01Q15/14
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)