Patent ID: 7636065

Claim:
An antenna apparatus comprising: a substrate comprising an end portion; a plurality of antenna elements connected to the end portion of the substrate through a connecting portion; and a conductive line path provided between two adjacent antenna elements of the plurality of antenna elements, both ends of the conductive line path connected to the end portion of the substrate; wherein a distance between both ends of the conductive line path is shorter than a quarter wavelength of an operating frequency of the plurality of antenna elements, and wherein a path difference between a first path length defined from the connecting portion of one of the two adjacent antenna elements to the connecting portion of the other of the two adjacent antenna elements through both ends portion of the conductive line path and a second path length defined from the connecting portion of one of the two adjacent antenna elements to the connecting portion of the other of the two adjacent antenna elements through the conductive line path is a half wavelength of the operating frequency.