Chipless RFID; a Generic Term for Systems That Use RF Energy to Communicate Data
Chipless RFID refers to the RFID (Radio-frequency identification) tags that do not require a microchip in the transponder. Chipless RFID can operate with a range greater than 10 meters and up to 256 bits of data, have greater physical performance, and cost one-tenth that of their silicon chip counterparts. The Japanese giant Hitachi has developed the world's smallest and thinnest RFID chip. Measuring only 0.15 x 0.15 millimeters in size and 7.5 micrometers thick, it is a smaller version of the previous record holder, Hitachi's 0.4 x 0.4 mm Micro-Chip. Chipless RFID tags do not use a microchip transponder, instead they use radiofrequency (RF) energy to communicate data. Some Chipless RFID tags use plastics or conductive polymers instead of a silicon microchip. Moreover, such tags have some extraordinary features such as unique signature, magnetically encoded stripe in banknotes, and microwave reflecting fiber. They are widely used in item-level tagging, banking cards, and b