Patent ID: 7274334

Claim:
An antenna structure comprising at least one resonator element, a ground plane and a feed line, wherein said at least one resonator element includes a first resonator element comprising a first end and a second end, said first resonator element being meandering in shape to define at least two adjacent resonator segments between said first and second ends, the antenna structure being operable in at least a first operating frequency band and a second operating frequency band, the second operating frequency band having a higher center frequency than said first operating frequency band, wherein said first resonator element has a physical length between said first and second ends which causes said first resonator to resonate in said first operating frequency band when said first resonator element is excited by a signal in a first operation frequency band, and wherein said at least one resonator element is embedded in a dielectric substrate and the spacing between said at least two adjacent resonator segments is such that, when said first resonator element is excited by a signal in said second operating frequency band, electromagnetic coupling occurs between said at least two adjacent resonator segments and causes said first resonator element to resonate in said second operating frequency band.