Patent ID: 9323877
Filing Date: 2016-04-26
CPC Classification: G06F,H01Q

Claim Text:
1. An antenna comprising: a ground plane; an electromagnetic band gap (EBG) structure disposed about the ground plane, the EBG structure having a number of unit cells arranged in rows and columns wherein the rows and columns defined two orthogonal axes; a radiating element disposed above the EBG structure, the radiating element having a long dimension and a short dimension wherein one of the long and short dimensions is aligned along at least one of the two orthogonal axes defined by the rows and columns of the EBG structure; a conductive cavity defined by sidewalls and a bottom surface, the conductive cavity encompassing the EBG structure and the radiating element, and being open on a radiating side of the antenna; and wherein the EBG structure is spaced a predetermined distance from the sidewalls of the conductive cavity to provide a predetermined capacitance between the sidewalls of the conductive cavity and the EBG structure, and to provide the antenna having a predetermined bandwidth and beam steering angle.