Patent ID: 6329950
Filing Date: 2001-12-11
Classification: H01Q

Abstract:
An antenna, comprising:a first antenna element, having an outer perimeter, formed of a conducting material on a layer of dielectric material;a second antenna element, having an outer perimeter, formed of said conducting material on said layer of dielectric material, wherein said second antenna element surrounds said first antenna element;a shorting element formed of said conducting material on said layer of dielectric material, wherein said shorting element connects said first antenna element and said second antenna element;an insulating gap, wherein said insulating gap insulates said first antenna element from said second antenna element except for the region where said shorting element connects said first antenna element and said second antenna element so that said first antenna element, said second antenna element, and said shorting element form said antenna; anda coaxial cable having an inner conductor and an outer conductor wherein said inner conductor of said coaxial cable is connected to said first antenna element and said outer conductor of said coaxial cable is connected to said second antenna element, and wherein the location of said shorting element, the location of the connection of said inner conductor of said coaxial cable to said first antenna element, and the location at which said coaxial cable exits said second antenna element are adjusted to tune the impedance of the antenna.