Spectral Signature Based Chipless Rfid Tag Loaded by Meandered Line Multi-Resonator

Abstract

A meandered line multi-resonator design is proposed for a chipless Radio Frequency Identification (RFID) tag. The tag is equipped with a set of identical resonant elements and two orthogonally polarized monopole ultrawide band (M-UWB) antennas. The proposed multi-resonator design is realized on an FR-4 substrate (ε r = 4.4; tan δ = 0.01) in a surface area of 13 × 17 mm 2 , occupying a coding density of 4.52 bits/cm 2 by encoding 10 bits of data. The bit is encoded using absence/presence coding and frequency shift coding technique. The data can be read and transmitted from the multi-resonator structure through the orthogonally polarized M-UWB antennas operating in the frequency range of 2 GHz to 4.5 GHz. The span of the meandered line multi-resonator design is 13 mm × 17 mm. The tag is designed using ADS software and tested using vector network analyzer (VNA).

Investigation on the chipless RFID tag with a UWB pulse using a UWB IR-based reader

“…UWB monopole antennas can be used both as RFID reader antenna or a tag antenna [20,52]. They also operate in a wide frequency band.…”

Frequency-Spectra-Based High Coding Capacity Chipless RFID Using an UWB-IR Approach

“…Subsequently, the tag code is determined based on the echoes reflected by a set of reflectors applied on the tag, which is linked to an object. More precisely, the existence or absence of these echoes and their time positions can be considered to specify the tag code [ 8 , 11 , 45 , 46 , 47 ]. On the other hand, in FD-based tags, an RFID reader uses a radio frequency (RF) signal to interrogate the tag.…”

“…RFID technology contains two major components: readers and tags [1,9,10]. Recently, the application of chipless tags has been extensively studied by the research community to develop high-performance RFID tags [3,[11][12][13][14][15][16][17][18][19]. Several topologies relating to those used based on resonators have been suggested for chipless tags.…”