Patent ID: 7229024

Claim:
An electrical structure comprising: a RFID tag; and an enclosure structure comprising a radio frequency opaque material, wherein the RFID tag is located within the enclosure structure, wherein the enclosure structure is adapted to collimate, a first radio frequency signal from a first RFID transceiver to the RFID tag, wherein the enclosure structure is adapted to collimate, a second radio frequency signal from the RFID tag to a second RFID transceiver in response to the first radio frequency signal, wherein the first RFID transceiver is not in a same location as the second RFID transceiver, wherein the first radio frequency signal comprises a first frequency, wherein the second radio frequency signal comprises a second frequency, wherein the first frequency is not a same frequency as the second frequency, wherein the radio frequency opaque material is transparent to the first frequency and opaque to the second frequency, wherein the radio frequency opaque material is adapted to collimate said first radio frequency signal from the first RFID transceiver to the RFID tag, wherein the enclosure structure comprises at least a first opening, and wherein the at least first opening is adapted to collimate said second radio frequency signal from the RFID tag to the second RFID transceiver in response to said first radio frequency signal.