Patent ID: 6876332

Claim:
An antenna, comprising: a dielectric layer having a first surface and a second surface which is spaced apart from and is substantially parallel to the first surface; a ground layer of electrically conductive material covering a portion of the first surface of the dielectric layer; a feed-line of electrically conductive material disposed on the second surface of the dielectric layer; a first radiating element of electrically conductive material electrically coupled to the feed-line, wherein the first radiating element is for generating a first and a third operating frequency of the antenna; a tuning element of electrically conductive material electrically coupled to the first radiating element and disposed on the second surface for adjusting the overall length of the first radiating element, wherein the tuning element comprises at least two stubs, each stub having a fixed end coupled to the first radiating element and a free end spaced apart from each other; and a second radiating element of electrically conductive material electrically coupled to the feed-line and disposed on the second surface, wherein the second radiating element is for generating a second operating frequency of the antenna.