Patent ID: 6801167
Filing Date: 2004-10-05
Classification: H01Q

Abstract:
A dielectric antenna comprising:a plate-shaped dielectric substrate having first and second main surfaces; a radiation electrode provided on the first main surface of the dielectric substrate so as to cover the first main surface apart from a peripheral portion thereof; a ground electrode formed on the entirety of the second main surface of the dielectric substrate; a feed electrode extending through the dielectric substrate from the first main surface to the second main surface, a feed point of the feed electrode being electrically connected to the radiation electrode; and a plurality of through-hole electrodes formed in a peripheral portion of the dielectric substrate so as to surround the radiation electrode, the through-hole electrodes being connected to the ground electrode, the dielectric substrate being of a substantially rectangular shape as viewed from the first main surface, and the plurality of through-hole electrodes including through-hole electrodes formed along each side of the dielectric substrate with substantially constant spacing therebetween, one corner portion of the dielectric substrate being chamfered at a chamfer angle; the radiation electrode being of a substantially rectangular shape corresponding to the rectangular shape of the dielectric substrate; and a first corner portion of the radiation electrode corresponding to the chamfered corner portion of the dielectric substrate and a second corner portion of the radiation electrode diagonally opposite the first corner portion each being cut at an angle equal to the chamfer angle of the chamfered corner portion of the dielectric substrate.