Patent ID: 8319689
Filing Date: 2012-11-27
Classification: H01Q

Abstract:
1. A patch antenna comprising: a multi-layer substrate in which a plurality of dielectric layers are stacked, the multi-layer substrate having a center region, a first surface and a second surface opposite the first surface; at least one metal pattern layer disposed between the dielectric layers except for the center region; an antenna patch disposed on the first surface and in the center region; a ground layer disposed on the second surface; and a first plurality of vias disposed around the center region through the dielectric layers for electrically connecting the at least one metal pattern layer to the ground layer, wherein the center region has a resonator portion, that is surrounded by the ground layer and the vias, that functions as a resonator, wherein the vias are spaced from each other by a distance equal to or shorter than about half the wavelength of radiation of the antenna patch, wherein the resonator portion is disposed between the ground layer and the antenna patch such that the ground layer and the antenna patch are disposed on opposite sides of the resonator portion relative to each other, and the ground layer is on a line that is perpendicular to a surface of the antenna patch.