Patent ID: 8471769

Claim:
An antenna, comprising: a dielectric material having i) a first side opposite a second side, and ii) a conductive via therein; a first planar conducting element on the first side of the dielectric material, the first planar conducting element having an electrical connection to the conductive via; a second planar conducting element on the first side of the dielectric material, wherein the first and second planar conducting elements are separated by a gap that electrically isolates the first planar conducting element from the second planar conducting element; and an electrical microstrip feed line on the second side of the dielectric material, the electrical microstrip feed line electrically connected to the conductive via and having a route extending from the conductive via, to across the gap, to under the second planar conducting element, the second planar conducting element providing a reference plane for both the electrical microstrip feed line and the first planar conducting element; wherein the first planar conducting element has a plurality of electromagnetic radiators, each radiator having dimensions that cause it to resonate over a range of frequencies that differs from a range of frequencies over which an adjacent radiator resonates, and at least first and second of the radiators bounding an open slot in the first planar conducting element; and wherein the first planar conducting element has a conductive protrusion extending into the gap.