Patent ID: 6943730

Claim:
An antenna, comprising: a first top plate having a first end, a second end opposite the first end, and two sides connecting the first end to the second end; a second top plate having a first end, a second end opposite the first end, and two sides connecting the first end to the second end, wherein one side of the second top plate is adjacent to one side of the first top plate, the first and second top plates configured to form a capacitive part of the antenna configured to confine an electric field generated by the antenna in a horizontal plane; a ground plane electrically connected with the first and second top plates, the ground plane configured to create an inductive part of the antenna with the first and second top plates, the inductive part configured to expel a magnetic field generated by the antenna; and an antenna feed coupled to the first end of the first top plate, wherein the first top plate, the second top plate, the ground plane, and the antenna feed are positioned to form a current distribution having a substantially circular cross-section.