REFLECTION MIRROR ANTENNA

Japanese Patent JP3498856

B2

PURPOSE: To easily install a reflection mirror antenna on a wall or a ceiling, to reduce the side lobe in the directional pattern, and to reduce the characteristic change due to the temperature change by providing a supporting body made of foaming materials with a reflection mirror face made of a metallic film.
CONSTITUTION: A main reflection mirror 1 is made of a thin metallic film produced by vapor-deposition or the like and is formed into a paraboloid of revolution. A supporting body 5 is made of a first kind of foaming material 6a and a second kind of foaming material 6b, and they are joind to hold the main reflection mirror 1 between them and are formed into a square as the whole. The first kind of foaming material 6a is a foaming polystyrol or the like where a conductive matter like carbon is mixed, and it is used in the area which a radio wave doesn't pass on the rear side or the like around the main reflection mirror 1. The second kind of foaming material 6b is a foaming polystyrol or the like and is used in the area which the radio wave passes. Attaching parts 7 are sucker, a magnet, a magic tape, or the like which can e attached to a wall 9.

Kazuhiro Uehara
Kenichi Kagoshima
Akira Kondo

JP61894A

February 23, 2004

January 07, 1994

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Nippon Telegraph and Telephone Corporation

H01Q15/14; H01Q1/12; H01Q1/40; H01Q19/13; H01Q19/19; (IPC1-7): H01Q15/14; H01Q1/12; H01Q1/40; H01Q19/13; H01Q19/19

JP62152201A
JP56122508A
JP4134908A
JP474005A
JP6438811U
JP63162597U
JP60145716U
JP60119118U
JP5843011U
JP5455247U
JP5367740U
JP5348544U
JP419815U
JP2126413U
JP197607U
JP289306Y1

Seiko Yoshida

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