FREQUENCY SELECTIVE SURFACE AIDS TO THE OPERATION OF RFID PRODUCTS

摘要

The present invention is directed to systems that use frequency selective surfaces (FSS) to aid in the operation of radio frequency identification (R FID) devices and products. In one embodiment, a system for interrogating rad io frequency identification (RFID) tags includes a conveyor belt and an RFID reader. The conveyor belt has a first surface and a second surface. The fir st surface is configured to receive an item to which an RFID tag is affixed and the second surface is configured to slide on a metal slide plate. The RF ID reader is configured to transmit instructions embodied in a radio frequen cy (RF) signal to the RFID tag, wherein the metal slide plate is positioned between the RFID reader and the RFID tag and comprises a frequency selective surface that is substantially transparent to the RF signal.