Patent ID: 7847697

Claim:
A radio frequency identification (RFID) tag comprising: a loop antenna that includes: a first conductive portion having a length and width that substantially exceed a thickness of the first conductive portion, wherein the length and width of the first conductive portion substantially lie in a first plane, at least a portion of the first conductive portion forming a tuning element for tuning an impedance of the loop antenna; and a second conductive portion having a length and width that substantially exceed a thickness of the second conductive portion, wherein the length and width of the second conductive portion substantially lie in a second plane that is substantially parallel to the first plane, the second conductive portion being electrically coupled to the first conductive portion; and an RFID circuit electrically connected to the loop antenna, wherein a current is excited through the loop antenna to flow through the first conductive portion and the second conductive portion in a current loop that lies in a third plane that is substantially perpendicular to the first plane and the second plane.