Patent ID: 7289065
Filing Date: 2007-10-30
Classification: H01Q

Abstract:
1. An antenna comprising: a substrate stack having a first substrate layer, a second substrate layer and a third substrate layer arranged between the first and second substrate layers; a first planar antenna, with a first electronically conductive layer arranged between the first substrate layer and the third substrate layer, and a first radiation element on a surface of the first substrate layer opposite the first electrically conductive layer; a second planar antenna, with a second electrically conductive layer arranged between the second substrate layer and the third substrate layer, and a second radiation element on a surface of the second substrate layer opposite the second electrically conductive layer; a differential signal connection for providing a differential signal; and a coupler for coupling the first planar antenna to a first component of the differential signal and for coupling the second planar antenna to a second component of the differential signal.