Triplate-type planar array antenna

摘要

A triplate-type planar array antenna is provided with an antenna circuit board ( 3 ) on which an antenna circuit including a plurality of radiating elements ( 5 ), which are vertically and horizontally arrayed in a two-dimensional manner, and feedlines ( 6 ) is formed; two pieces of dielectric substances ( 2 a , 2 b) between which the antenna circuit board ( 3 ) is sandwiched at the both sides; a ground conductor ( 1 ) laminated on one dielectric substance ( 2 b); and a slot board ( 4 ) laminated on the other dielectric substance ( 2 a). One or more slot openings ( 7 ) corresponding to the plurality of radiating elements ( 5 ) with a linear arrangement are formed on the slot board ( 4 ).