Patent ID: 8149172

Claim:
An antenna, comprising: a substrate, comprising a first surface and a second surface; a ground element, formed on the first surface, wherein the ground element has a aperture, the aperture has a first portion and a second portion, the first portion is connected to the second portion, the second portion has a first curved edge and a second curved edge, the first curved edge and the second curved edge extend separately symmetrical to a base line, the first curved edge has a first divergent end and a first convergent end, the second curved edge has a second divergent end and a second convergent end, and the first divergent end and the second divergent end are connected to an edge of the first portion; a first feed conductor, disposed on the second surface, wherein the first feed conductor feeds a first signal to the aperture; and a second feed conductor, disposed on the second surface, wherein the second feed conductor feeds a second signal to the aperture.