Patent ID: 8704715

Claim:
A flat, dual band antenna, comprising: a ground plane; a first impedance matching element, connecting to a first end of the ground plane at a first joint; a second impedance matching element, connecting to a second end of the ground plane at a second joint; a first radiation unit, comprising: a first arc, connected to the first joint, disposed concave with respect to the ground plane, and extending from the first joint toward the second joint; and a vertical portion, connected to an end of the first arc proximal to the second joint, and extending away from the ground plane; and a second radiation unit, comprising a second arc, connected to a distal end of the vertical portion from the ground plane, disposed concave with respect to the ground plane, and extending from the distal end of the vertical portion towards the first joint, wherein the ground plane, first impedance matching unit, second impedance matching unit, first radiation unit and second radiation unit are all flat, metallic and coplanar.