Patent ID: 8917210

Claim:
A package structure, comprising: an RFIC (radio frequency integrated circuit) chip comprising a semiconductor substrate having an active surface and an inactive surface, and a BEOL (back end of line) structure formed on the active surface of the semiconductor substrate; and an antenna structure comprising: a planar antenna having one or more radiator elements formed as part of the BEOL structure of the RFIC chip; and a superstrate structure disposed on a surface of the BEOL structure adjacent planar antenna, the superstrate structure comprising at least one substrate layer and a focusing metal element disposed on a surface of the at least one substrate and aligned to the one or more radiator elements of the planar antenna, wherein the focusing metal element has a structure that is complementary to the one or more radiator elements of the planar antenna and configured to focus electromagnetic radiation to and from the planar antenna structure.