Patent ID: 8368601

Claim:
A planar asymmetric antenna structure with shifted feed position for multi-protocol operations, the antenna structure comprising: a single upper radiating element comprising two elliptically tapering right and left arms, each with a different radius and directed away from each other in opposite directions; a single lower radiating element operating as a ground plane, the single lower radiating element having corresponding elliptically tapered portions opposite the elliptically tapered right and left arms of the single upper radiating element; and an off-center feed point positioned between the right and left arms and at a predetermined distance from each arm, wherein one arm has a smaller elliptical tapering than the other arm and the feed point is positioned closer to one arm than the other arm, and wherein at least a portion of an edge of at least one of the right and left arms and at least a portion of an edge of the corresponding elliptically tapered portion opposite the at least one right and left arms define a portion of a same ellipse.