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Title:
COMPACT FORWARD FEED TYPE DUAL REFLECTOR ANTENNA SYSTEM FOR PROVIDING ADJACENT HIGH GAIN ANTENNA BEAM
Document Type and Number:
Japanese Patent JP2000216626
Kind Code:
A
Abstract:

To provide a satellite use reflection antenna system where each antenna beam demarcates individual arrival range cell in a beam arrival range, and 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, a sub reflector 27, and a main reflector 25 configure the front feed type dual reflector antenna system 21. The 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 shaped to have a prescribed contour. Each composite radiation beam is oriented to be made incident onto each predetermined location of the sub reflector that orients the radiation beams to the main reflector 25 and the main reflector reflects each composite radiation beam in a pre-selected direction.


Inventors:
CHANDLER CHARLES W
PEEBLES ANN L
Application Number:
JP2000007432A
Publication Date:
August 04, 2000
Filing Date:
January 17, 2000
Export Citation:
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Assignee:
TRW INC
International Classes:
H01Q19/17; H01Q1/28; H01Q3/12; H01Q19/18; H01Q19/19; H01Q25/00; H04B7/10; (IPC1-7): H01Q19/17; H04B7/10; H01Q19/18; H01Q3/12; H01Q1/28
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)