Communications: radio wave antennas – Antennas – With means for moving directive antenna for scanning,...
Patent
1998-03-23
2000-03-07
Le, Hoanganh
Communications: radio wave antennas
Antennas
With means for moving directive antenna for scanning,...
343882, 74469, 248179, H01Q 310
Patent
active
060346434
ABSTRACT:
A directional beam antenna device includes: an antenna supporting member which is supported on a base in such a manner as to be rotatable about a first rotational axis; an antenna portion which is supported on the antenna supporting member in such a manner as to be rotatable about a second rotational axis which is perpendicular to an antenna aperture and is inclined at a first angle with respect to the first rotational axis, the direction of an antenna beam being inclined at a second angle with respect to the second rotational axis; a first driving unit for rotating the antenna supporting member about the first rotational axis with respect to the base; and a second driving unit for rotating the antenna portion about the second rotational axis with respect to the antenna supporting member. A directional beam controlling apparatus is provided with a controlling unit for controlling an elevation angle of the antenna beam to a target value by causing the second driving unit to rotate the antenna portion with respect to the antenna supporting member, and for controlling an azimuth angle of the antenna beam to a target value by causing the first driving unit to rotate the antenna supporting member with respect to the base.
REFERENCES:
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patent: 5025262 (1991-06-01), Abdelrazik et al.
patent: 5453753 (1995-09-01), Cosenza et al.
patent: 5619215 (1997-04-01), Sydor
Patent Abstracts of Japan, vol. 17, No. 542 (E-1441), Sep. 29, 1993, JP 05 152824, Jun. 18, 1993.
Patent Abstracts of Japan, vol. 96, No. 10, Oct. 31, 1996, JP 08 162833, Jun. 21, 1996.
Harada Tomohisa
Nishikawa Kunitoshi
Ogawa Masaru
Teramoto Eiji
Watanabe Toshiaki
Clinger James
Kabushiki Kaisha Toyota Chuo Kenkyusho
Le Hoang-anh
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