Chipless RFID Tag Using Multiple G-Shaped Resonators
Chipless radio frequency identification (Chipless RFID) is an emerging wireless technology for identification, tracking and sensing, finds best applications in IoT (Internet-of-things) deployment. New resonator structure for chipless RFID tags is presente
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ract. Chipless radio frequency identification (Chipless RFID) is an emerging wireless technology for identification, tracking and sensing, finds best applications in IoT (Internet-of-things) deployment. New resonator structure for chipless RFID tags is presented in this paper. The complete design consists of 10 G-shaped resonators-based tag, and two cross-polarized transmitting and receiving monopole antennas. 1024 different code words are possible in 3.52 to 4.54 GHz band using 10 G-shaped resonators. The proposed tag is designed on substrate Rogers RO4003 with dielectric constant 3.55, loss tangent 0.0027 and thickness 0.88 mm using CST MWS. Keywords: Radio Frequency Identification (RFID) Chipless RFID tag G-shaped resonator Internet of Things (IoT) Monopole antenna
1 Introduction With technological advances, several identification techniques have emerged, including barcode identification, which is still used today and is the most widely used identification technology in the world. But the latter has the disadvantage of being slow (only one object identified at a time) and requiring a clear line-of-sight (LoS). This means that the tag shall be always printed and exposed on the products and the scanner requires a direct view of the bar codes [1]. Another similar identification technology, called RFID (Radio Frequency IDentification) have been developed in recent years to overcome the barcode limitations, its purpose is to allow remotely the identification, without physical contact nor visual, of objects or individuals. This technology has known many developments before it reaches the level of maturity and current performance [13], and continues to evolve and open up to other applications in many areas of everyday life such as applications in logistics, production systems, traceability, urban transport, or in wireless sensor networks and the Internet of Things (IoT) [6–8]. Despite the benefits provided by RFID, their growth remains braked by the unit cost of a tag, especially when compared to the global reference identification system that is the barcode. Indeed, in some applications, the objects to be identified may sometimes have a unit price lower than the price of an RFID tag. It is therefore understood that conventional RFID technology using an antenna connected to an © Springer Nature Switzerland AG 2019 Y. Farhaoui and L. Moussaid (Eds.): ICBDSDE 2018, SBD 53, pp. 60–66, 2019. https://doi.org/10.1007/978-3-030-12048-1_8
Chipless RFID Tag Using Multiple G-Shaped Resonators
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integrated circuit (IC) chip cannot be applied in these cases. Thus, the study of RFID tags without chip (named as chipless tags) is attracting growing interest and research is intensifying on this subject. Chipless RFID is in terms of performance and application at the border between the barcode and conventional RFID [2]. Another significant advantage of the chipless tag is their planar structure making them printable and thus reducing the cost of the tag to few cents [3, 4]. The chipless RFID can be classified into three main categories su
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