Radio wave reflector and construction material

Abstract

Provided are a radio wave reflector and building material that have flexibility and reflect radio waves while the intensity thereof is maintained. A radio wave reflector 11 for reflecting radio waves, wherein when the radio wave reflector 11 is in a flat state and is caused to reflect a radio wave at an incident angle of an incident wave of 15 degrees or more and 75 degrees or less, the intensity of a reflective wave as specular reflection of the incident wave is −30 dB or more relative to the intensity of the incident wave at least at one frequency; the change rate of the surface resistivity R2 of the radio wave reflector 11 curved along a curved surface with a curvature radius of 200 mm with respect to surface resistivity R1 of the radio wave reflector 11 in a flat state is −10% or more and 10% or less; and the radio wave reflector 11 has a flexural modulus of 0.05 GPa or more and 4 GPa or less.

Dependencies are inferred from the claim text.