Patent ID: 6819295
Filing Date: 2004-11-16
Classification: H01Q

Abstract:
A dual frequency antenna comprising:a planar dielectric substrate having a top surface and a bottom surface; a separation between said top surface and said bottom surface defined by a thickness of said substrate; a first antenna element on said top surface of said substrate, said first antenna element being dimensioned to a first length to receive radio transmissions at a first frequency, said first antenna element having first and second terminating ends; a second antenna element on said bottom surface of said substrate, said second antenna element dimensioned to a second length to receive radio transmissions at a second frequency; said second antenna element electrically communicating with said first antenna element through mutual coupling; said second antenna being a substantially meanderline shape, said second antenna defining an interior portion of said substrate defined substantially by the perimeter of said meanderline shape; a single point feed having a first end communicating with said first and second terminating ends of said first loop element; and a second end of said single point feed adapted for operative engagement with an electronic device, whereby said radio transmissions at said second frequency are communicated to said first antenna element from said second antenna element and said first antenna element communicates both said first frequency and said second frequency radio transmissions through said single point feed to said electronic device.