Patent ID: 7538679

Claim:
A method of testing a strip of radio frequency identification (RFID) tags comprising: (1) positioning a tag of a strip of tags adjacent to an opening in an electrically conductive sheet, wherein the tag has orthogonally polarized first and second antennas; (2) transmitting a first RF test signal through the opening, wherein the tag is positioned such that the first RF test signal has a polarization that is substantially the same as a polarization of the first antenna and is substantially orthogonal to a polarization of the second antenna; (3) determining whether a response to the first RF test signal is received using a central logic structure; (4) transmitting a second RF test signal through the opening, wherein each tag positioned adjacent to the opening is positioned such that the second RF test signal has a polarization that is substantially the same as the polarization of the second antenna and is substantially orthogonal to the polarization of the first antenna; and (5) determining whether a response to the second RF test signal is received using the central logic structure.