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Title:
ANTENNA DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/048941
Kind Code:
A1
Abstract:
Disclosed is an antenna device provided with a primary radiator (1), a reflector antenna comprising a feed waveguide (3) for feeding radio waves to the primary radiator (1) and a reflector (4), and a radome (5) which covers the reflector antenna, wherein a sidelobe reduction member (2) is attached near the primary radiator (1) or the feed waveguide (3), and the sidelobe reduction member (2) reduces the sidelobe in a specific direction of the antenna by scattering or absorbing radio waves reflected by the radome (5) out of the radio waves irradiated from the reflector antenna. Thereby, the deterioration of the sidelobe due to reflected waves at the radome can be reduced.

Inventors:
YAMAMOTO, Shinichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
山本 伸一 (〒10 東京都千代田区丸の内二丁目7番3号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
NUIMURA, Shuji (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
縫村 修次 (〒10 東京都千代田区丸の内二丁目7番3号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
NAITO, Izuru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
内藤 出 (〒10 東京都千代田区丸の内二丁目7番3号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
Application Number:
JP2010/067431
Publication Date:
April 28, 2011
Filing Date:
October 05, 2010
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目7番3号 Tokyo, 〒1008310, JP)
YAMAMOTO, Shinichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
山本 伸一 (〒10 東京都千代田区丸の内二丁目7番3号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
NUIMURA, Shuji (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
縫村 修次 (〒10 東京都千代田区丸の内二丁目7番3号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
NAITO, Izuru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
International Classes:
H01Q19/13; H01Q1/42; H01Q13/02; H01Q17/00
Foreign References:
JPS63169803A1988-07-13
JPS56169905A1981-12-26
JPS56172007U1981-12-18
Other References:
TOSHIO SATOH; SHIZUO ENDO; NAOTO MATSUNAKA; SHINICHI BETSUDAN; KOJI KATAGI; TAKASHI EBISUI: 'SIDELOBE LEVEL REDUCTION BY IMPROVEMENT OF STRUT SHAPE', May 1981, THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS pages 29 - 36
See also references of EP 2493020A1
Attorney, Agent or Firm:
SOGA, Michiharu et al. (S. Soga & Co, 8th Floor Kokusai Building, 1-1, Marunouchi 3-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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