Title:
ELECTROMAGNETIC SHIELDING STRUCTURE OF WINDOW
Document Type and Number:
Japanese Patent JP3033020
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enable electromagnetic shield in which only a radio wave band with a necessary frequency is selected by arranging an antenna element comprising a short-circuit type dipole antenna of a length corresponding to the frequency in a transparent plate, and fitting the transparent plate to a pane at a space.
SOLUTION: An antenna element 3 comprising a short-circuit type dipole antenna of a length corresponding to a frequency is regularly arranged in a transparent plate 4, and the transparent plate 4 is fitted to a pane 1 through a spacer 5. Subsequently, the antenna element 3 is so constructed that electromagnetic wave energy is not always reflected only by the area of the metallic part of the antenna, but an electromagnetic field is reflected in a certain region near the metallic part, and the antenna element 3 is regularly arranged in the self-retained transparent plate 4 in consideration of the equivalent electromagnetic field reflection area to form an electromagnetic shield. Subsequently, in the patterned antenna element 3, the length is selected to shield a specified frequency, and radio waves in which collection of external information is needed is not shielded.
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Inventors:
Kimio Kawasaki
Junichi Hirai
High Shuichi Saka
Hiroshi Takizawa
Yoshimasa Yoshimasa
Kazushi Yamanoue
Masaaki Sasada
Junichi Hirai
High Shuichi Saka
Hiroshi Takizawa
Yoshimasa Yoshimasa
Kazushi Yamanoue
Masaaki Sasada
Application Number:
JP14527597A
Publication Date:
April 17, 2000
Filing Date:
June 03, 1997
Export Citation:
Assignee:
Kashima Construction Co., Ltd.
International Classes:
E06B5/18; E06B5/00; (IPC1-7): E06B5/00
Domestic Patent References:
| JP8274538A |
Attorney, Agent or Firm:
Tsukasa Kubo