With the introduction of radio-frequency identification (RFID) technology as a contactless identification technique, more consideration has been drawn towards the application of RFID in a variety of commercial areas such as access management, contactless payment, toll collection, tracking of goods and animals and so on. The RFID tags used earlier were integrated with chips which further increases the total cost of the tagged items. Therefore, there has been demand of low cost RFID tags that can be widely used without adding total cost in the tagged products. Several manufacturers came with low cost Chipless RFID tags that seems to be the ideal solution to address this concern. RFID tags without a silicon IC/microchip/RFID Tag IC are called Chipless RFID tags or RF fibers. These tags are made up of plastic or conductive polymers instead of silicon-based ICs. These tags are referred as passive RFID tags and these relies on electromagnetic power obtained from th...