Method for Arranging Antenna Device, Radar Apparatus, and Dielectric Member

摘要

An antenna device (10) is disclosed. The antenna device (10) includes a radiator (20) for radiating an electromagnetic wave, and a dielectric body (16, 17, 18, 19) arranged on an electromagnetic wave radiating side of the radiator, and having a plurality of dielectric members arrayed in a longitudinal direction of the radiator, wherein boundaries between the plurality of adjacent dielectric members are asymmetric with respect to a virtual line perpendicularly passing through the center of the dielectric body in the longitudinal direction.