A Novel <i>L</i>-Shape Ultra Wideband Chipless Radio-Frequency Identification Tag

Issa, Khaled; Ashraf, Muhammad A.; AlShareef, Mohammed R.; Behairy, Hatim; Alshebeili, Saleh; Fathallah, Habib

doi:10.1155/2017/2823565

Cited by 11 publications

(7 citation statements)

References 18 publications

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“…x Determination of the length of the i th resonator in vertical and horizontal directions i.e., i= 1 ,2 ,3 , 4…., n, according to the formulas [1]:…”

Section: Design Propertiesmentioning

confidence: 99%

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Plus Shaped Chipless RFID Tag

Bhagure¹,

Choudhury²

2021

ITM Web Conf.

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Chip-less radio frequency identification (RFID) technology is capable for detecting, identification, and chasing for the future Internet of Things (IoT) systems and applications. The chipless RFID technology gives us the impression as a rising substitute of the traditional RFID tags and barcodes by encoding data from tags employing the radio frequency waves. The paper presents the design as well as simulation of chip-less Plus shaped RFID tags. The structure is composed of Rogers RT/Duroid 5880 by means of a substrate having the physical dimensions 40mm x 40mm over which eight resonators are placed. This tag is compact, and the resonators are closely placed. The tag is designed using Ansys Electronics Desktop.

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“…x Determination of the length of the i th resonator in vertical and horizontal directions i.e., i= 1 ,2 ,3 , 4…., n, according to the formulas [1]:…”

Section: Design Propertiesmentioning

confidence: 99%

“…x The design parameters are considered as per the guidelines given in the base paper which is been selected [1].…”

Section: Design Propertiesmentioning

confidence: 99%

Plus Shaped Chipless RFID Tag

Bhagure¹,

Choudhury²

2021

ITM Web Conf.

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“…There has been a recent emphasis on the chipless tags employing the backscattering concept [11, 21, 22]. However, the major constraints in these designs are the requirements of large bandwidth, orientation independence, and higher frequencies for the encoding of data [23].…”

Section: Introductionmentioning

confidence: 99%

Design, analysis, and realisation of chipless RFID tag for orientation independent configurations

Hashmi

Sharma

2020

J. eng.

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The architectures of two innovative compact orientation independent chipless radio frequency identification device (RFID) tags for emerging applications such as the internet of things are presented. These tags, when illuminated, generate resonant frequencies in the radar cross-section backscattered spectrum, which are used to encode the data. These are based around L-type resonators, which can be read from front and back using linear polarisation waves as they do not have the ground plane. The first tag design consists of L-resonators in the lower triangular of the substrate, and thereby mutual coupling is increased as a reduction in the size. The second tag design incorporates alternate L-resonators in both halves of the substrate and exhibits reduced mutual coupling and enhanced printing strength but with a reduction in bit density. The proposed concept is demonstrated through prototypes of 8-bit chipless tags on Rogers substrate. These tags require very low bandwidth to encode 8-bit and occupy a small board size of 20 mm × 20 mm, and these are considerable improvements in the development of chipless RFID.

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“…RCS based chipless RFID tag incorporating other type of resonators include square loop [28], octagon [29], hybrid circular-square [30], C-section [17] half-wave slot [31], and L-resonator [32]. Although square loop resonators are polarization insensitive, a high inter-resonator mutual coupling is typically observed, limiting the possibility for compactly placing resonators, thus hampering the improvement in bit density.…”

Section: Introductionmentioning

confidence: 99%

Orientation Independent Chipless RFID Tag Using Novel Trefoil Resonators

et al. 2019

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In this paper, a compact and fully passive bit encoding circuit, capable of operating as a chipless radio frequency identification (RFID) tag is presented. The structure consists of novel concentric trefoil-shaped slot resonators realized using Rogers RT/duroid R 5880 laminate, occupying a physical footprint of 13.55 × 13.55 mm 2. Each resonating element is associated with a particular data bit, having a 1:1 resonator-to-bit correspondence. Bit sequences are configured through introducing modifications in the geometric structure either by addition or exclusion of each nested slot resonator. Such changes manifest directly in the electromagnetic signature of the tag as presence or absence of corresponding resonant peaks. The proposed 10-bit tag offers minimized inter-resonator mutual coupling and insensitivity to changes in polarization and incident angles thereby demonstrating orientation independent functionality. Moreover, error-free encoding is achieved through stabilizing the shift in resonant frequencies for a variety of different geometric configurations and orientation of the structure. The tag operates within the license-free ultrawideband ranging from 5.4 to 10.4 GHz, providing spectral bit capacity and bit density of 2 bits/GHz and 5.44 bits/cm 2 respectively. INDEX TERMS Chipless tag, on-off keying (OOK), radar cross-section (RCS), radio frequency identification (RFID).

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A Novel L-Shape Ultra Wideband Chipless Radio-Frequency Identification Tag

Cited by 11 publications

References 18 publications

Plus Shaped Chipless RFID Tag

Plus Shaped Chipless RFID Tag

Design, analysis, and realisation of chipless RFID tag for orientation independent configurations

Orientation Independent Chipless RFID Tag Using Novel Trefoil Resonators

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