TRIPLATE TYPE PLANAR ARRAY ANTENNA

摘要

A triplate type planar array antenna, comprising an antenna circuit board (3) on which an antenna circuit having a plurality of radiating elements (5) two-dimensionally arranged in the vertical and lateral direction and a feeding line (6) is formed, two sheets of dielectric substances (2a) and (2b) holding the antenna circuit board (3) from both sides, a ground conductor (1) stacked on the one dielectric substance (2b), and a slot plate (4) stacked on the other dielectric substance (2a). On or more of slot openings (7) corresponding to the plurality of radiating elements (5) arranged in a row are formed in the slot plate (4).