To make an absorber light in weight and also obtain the structure of a radio wave absorption panel corresponding to a wide band for both a VHF and a UHF by using a ferrite plate having specific width and thickness for the absorber.
In a radio wave absorption structure, exterior material, an absorber and a reflection are arranged in this order, and a ferrite plate 4 having 15 to 30 mm width and 4 to 8 mm thickness is used as the absorber. Also, ferrite plates are continuously arranged in the magnetic field direction of incoming radio waves, the magnetic field direction is preferably arranged with the interval of 45 to 60% interval ratio placed and a dielectric 5 that is below 2 of dielectric constant is preferably arranged at interval parts. It is possible to maintain the ferrite plates 4 at prescribed intervals and also to prevent concrete 7 including moisture from flowing in by arranging the dielectric 5. Also, the cladding preferably has a characteristic in which a dielectric constant is equal to or less than 5.0-J3.0 and its thickness is preferably in the range of 10 to 15 mm.
TANIGUCHI NAONOBU
TAMAKAI TOSHIYUKI
TANAKA TOSHIHIKO
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