Patent ID: 8599079

Claim:
A wideband antenna, comprising: a pair of planar, conductive antenna elements; and a pair of planar, conductive band-like feeding legs, wherein the antenna elements are arranged symmetrically with respect to a symmetric axis, the band-like feeding legs are arranged symmetrically with respect to the symmetric axis, with a narrow space interposed between the band-like feeding legs, the band-like feeding legs are connected to adjacent portions of the antenna elements at which the antenna elements are closest to each other, and a width of each of the band-like feeding legs is increased in a direction away from the connecting portion, and wherein an outer edge portion of each of the antenna elements that is farthest from the connecting part forms part of an arc, each of the adjacent portions includes part of a phantom arc, and each of the legs is joined to the corresponding antenna element along a direction of a tangent line coming into contact with the phantom arc of the adjacent portion, thereby forming a joint portion.