Patent ID: 8952859
Filing Date: 2015-02-10
Classification: H01Q,Y10T

Abstract:
1. An antenna operable in a monopole mode and a dipole mode comprising: first and second conductive elements, each of the conductive elements haying first and second end portions; an antenna feedpoint operatively coupled to the first end portion of the first conductive element; and a ground operatively coupled to the first end portion of the second conductive element; wherein the first end portions of the first and second conductive elements are substantially proximate to one another for a first length in which the first end portion of the first conductive element electromagnetically couples with the first end portion of the second conductive element, and wherein the first and second conductive elements diverge from each other following the first length, and wherein the first and second conductive elements converge toward the second end portions to form a capacitive gap, wherein the second end portions are proximate to one another for a second length less than the first length, and wherein, when the antenna is operated at a first, relatively low operating frequency, the antenna is operable in a monopole mode in which the second conductive element operates as a counterpoise for the first conductive element, and, when the antenna is operated at a second, relatively high operating frequency, the antenna is operable in a dipole mode in which the first conductive element couples the antenna feedpoint to the second conductive element.