Title:
TRACKING DEVICE
Document Type and Number:
Japanese Patent JPH09246844
Kind Code:
A
Abstract:
To prevent reduction in the reception sensitivity even when a reflecting wave is in existence.
A plane antenna 1 is controlled to be driven so as to be in matching with a direction of a broadcast satellite and its elevating angle is controlled electronically. Only a direct wave of a radio wave from the broadcast satellite is made incident to the plane antenna 1 and the reflected wave is shielded by a metallic shield plate 2 provided to a radome 3 and not made incident in the plane antenna 1. Thus, interference by a reflecting wave is prevented.
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Inventors:
OSHIMA MOTOKI
Application Number:
JP7811796A
Publication Date:
September 19, 1997
Filing Date:
March 07, 1996
Export Citation:
Assignee:
NIPPON ANTENNA KK
International Classes:
H01Q17/00; G01S3/38; H01Q1/32; H01Q1/42; H01Q3/26; H01Q13/08; (IPC1-7): H01Q3/26; G01S3/38; H01Q1/32; H01Q1/42; H01Q13/08; H01Q17/00
Attorney, Agent or Firm:
Yasuo Asami (1 person outside)