Patent ID: 6903686

Claim:
A planar inverted-F antenna having a plurality of resonant frequency bandwidths of operation, comprising: a signal feed; a ground feed; and a conductive element in communication with the signal and ground feed, the conductive element comprising: a primary branch in communication with the signal and ground feeds, the primaiy branch having opposing first and second end portions and a first current path length; a secondary branch in communication with the signal and ground feeds, the secondary branch having opposing first and second end portions and a second current path length, the length of the second current path being shorter than the length of the first current path; and a bend segment having opposing end portions positioned intermediate the primary and secondary branches configured to join the primary and secondary branches, wherein the secondary branch is conductively coupled to the signal and ground feeds, wherein the primary branch is conductively coupled to the bend segment that is conductively coupled to the signal and ground feeds so that the primary branch radiates at high and low band without requiring capacitive coupling between the primary and secondary branches, wherein the around and signal feeds are positioned adjacent each other proximate a common edge portion of the conductive element, and wherein the bend segment is configured and positioned with respect to the signal and ground and the secondary branch so that in low band operation, current flows into the primary branch but the secondary branch has current flow that is substantially reduced from that in high band operation and so that, in high band operation, current flows in at least a major portion of both the primary and secondary branches.