Patent ID: 9620863
Date: 2017-04-11
CPC Classifications: H01Q

Claim:
1. An antenna device comprising a substrate; a ground conductor formed on a principal surface of the substrate; a radiating element formed in a non-ground-conductor region of the substrate, the non-ground-conductor region being a region where the ground conductor is not formed and being on the principal surface of the substrate; the radiating element being composed of a first radiating element and a second radiating element; a parasitic element in the non-ground-conductor region, said parasitic element not in electrical contact with either the radiating element or the ground conductor; and a feeding circuit; wherein the first radiating element and the second radiating element each have a first extending portion protruding from a ground-conductor region to the non-ground-conductor region, the ground-conductor region being a region where the ground conductor is formed, and a second extending portion extending parallel with a boundary of the ground-conductor region and the non-ground-conductor region; the first extending portion and the second extending portion are L-shaped; the first radiating element and the second radiating element are arranged such that an open end of the second extending portion of the first radiating element and an open end of the second extending portion of the second radiating element face each other; the first radiating element is a feed radiating element to which the feeding circuit is connected; and the second radiating element is a parasitic radiating element.