Abstract
Chipless radio frequency identification (RFID) has emerged as an advanced, wireless, non-line-of-sight, data capturing and tracking radio communication technology. Now tagging technology is getting more efficient than optical barcodes. RFID technology has appeared as a promising alternative to replace optical barcodes. Based on the presence of application specific integrated circuit (ASIC), it is classified as chipped and chipless-RFID. Till now chipless RFID systems cannot compete with chipped RFID in terms of information storage capability, size, and tracking distances. One of the most valid reason that hinders the mass production of RFID tag is its cost which is due to the semiconductor unit present in the tag. Therefore, research has been focused on developing low-cost chipless RFID tags. Here circular split-ring resonator (SRR) based 3-bit chipless RFID tag is proposed, fabricated and analyzed. The performance characteristics are obtained through design and simulation using CST Microwave Studio and validated through measurements. Based on measurement results, the tag can provide a maintenance-free environment for wireless applications, viz. goods tracking, identity detection, and health applications.
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