Patent ID: 8269670

Claim:
A radio frequency identification (RFID) tag, comprising: a circuit board assembly including a circuit board, an RFID circuit, an antenna, and a metallic ground plane, said circuit board having a first side and a second side, said circuit board carrying said antenna on said first side and said ground plane on said second side, said RFID circuit being coupled with each of said antenna and said ground plane; a backplane coupled with said ground plane along said second side; and an overmolded housing surrounding and hermetically sealing said circuit board assembly and said backplane, said housing being comprised of a material which is both autoclavable and has a low dielectric constant of between approximately 1 to 5, said backplane extending past said ground plane a predetermined amount within said overmolded housing, said predetermined amount sufficient for self resonation, the RFID tag being configured to be attached to metallic and non-metallic objects with said self resonation occurring regardless as to whether the RFID tag is attached to the metallic or the non-metallic object.