| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio wave half mirror for a milli-wave zone, which can planarize frequency characteristics of transmittance, and a transmittance planarization method for the same.SOLUTION: A radio wave half mirror 20, which is made of a metal plate 21 having an outer shape for closing a waveguide 11, includes a slit 22 for electromagnetic wave transmission, which is provided in a metal plate 21 along a long side of an opening of the waveguide 11. The thickness L of the metal plate 21 in the direction of making the electromagnetic wave transmitted through the slit 22 is set on the basis of frequency characteristics of transmittance of the electromagnetic wave. |
