Antenna device

Abstract

Provided is an antenna device which can achieve wide-angle radiation directivity, by using a single patch antenna, without causing an increase in the size of the device and an increase in the degree of complexity of its configuration, which increases would otherwise occur as a result of arraying a plurality of antennas. An antenna device configured by using a dielectric substrate includes a patch antenna formed in a predetermined conductor layer, a cavity formed in a dielectric layer disposed above the predetermined conductor layer and having a shape which encompasses the patch antenna in a plan view as viewed in a Z direction, which is the thickness direction of the dielectric substrate, and ground conductors disposed to face the dielectric layer in the Z direction with the predetermined conductor layer intervening therebetween.

Dependencies are inferred from the claim text.