| 摘要 |
PROBLEM TO BE SOLVED: To improve antenna characteristics without up-sizing a reflector, in an antenna device having a reflector configured by forming a plurality of apertures in the plate surface of a conductive planar member.SOLUTION: In the plate surface of a reflector body 52 disposed to face radiators 20A, 20B, aperture groups each consisting of a plurality of apertures 58 arranged in one row, at a predetermined interval, along the X axis parallel with the polarization plane of radio wave transmitted and received by the radiators 20A, 20B, are formed in multiple stages in the Y axis direction orthogonal to the X axis. The multiple stages of aperture groups are arranged so that the apertures constituting each aperture group are located between the apertures constituting an adjacent aperture group, when viewing from the Y axis direction, and overlap the apertures of an adjacent aperture group, when viewing from the X axis direction. |
