High Data Density Encoding Resonator for Ultra Wideband Chipless RFID Tag

2019 ◽  
Author(s):  
Thanh Huong Nguyen ◽  
Viet Tung Nguyen
Keyword(s):  
Ultra Wideband ◽  
Rfid Tag ◽  
High Data ◽  
Chipless Rfid ◽  
Data Density

Design of High Data Density Chipless RFID Tag Embedded in QR Code

2021 ◽  
pp. 1-1
Author(s):  
Xinchen Wang ◽  
Yonghui Tao ◽  
Johan Siden ◽  
Gang Wang
Keyword(s):  
Qr Code ◽  
Rfid Tag ◽  
High Data ◽  
Chipless Rfid ◽  
Data Density

scholarly journals On the application of the EM-imaging for chipless RFID tags

2015 ◽  
Vol 2 (2) ◽  
pp. 86-96 ◽  
Author(s):  
M. Zomorrodi ◽  
N.C. Karmakar
Keyword(s):  
Radio Frequency Identification ◽  
Low Cost ◽  
60 Ghz ◽  
Rfid Tag ◽  
High Data ◽  
Data Encoding ◽  
Bending Effect ◽  
Chipless Rfid ◽  
Frequency Identification ◽  
Cost Item

The electromagnetic (EM) imaging technique at mm-band 60 GHz is proposed for data encoding purpose in the chipless Radio Frequency Identification (RFID) systems. The fully printable chipless RFID tag comprises tiny conductive EM polarizers to create high cross-polar radar cross-section. Synthetic aperture radar approach is applied for formation of the tag's EM-image and revealing the tag's content. The achieved high data encoding capacity of 2 bits/cm2in this technique based on a fully printable tag is very convincing for many applications. The system immunity to multipath interference, bending effect, and printing inaccuracy suggests huge potentials for low-cost item tagging. Tags are also readable through a tick paper envelop; hence secure identification is provided by the proposed technique.

High Data Capacity Chipless RFID Tag Based on Time Domain Scattering Modulation

2021 ◽  
pp. 1-1
Author(s):  
Zhengjie Huang ◽  
Shiwei Dong ◽  
Jiangtao Huangfu ◽  
Lixin Ran ◽  
Dexin Ye
Keyword(s):  
Time Domain ◽  
Rfid Tag ◽  
High Data ◽  
Chipless Rfid ◽  
Data Capacity ◽  
Time Domain Scattering

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

2021 ◽  
pp. 1-10
Author(s):  
Kawther Mekki ◽  
Omrane Necibi ◽  
Hugo Dinis ◽  
Paulo Mendes ◽  
Ali Gharsallah
Keyword(s):  
Radio Frequency Identification ◽  
Ultra Wideband ◽  
Rfid Tag ◽  
Triangular Patch ◽  
Chipless Rfid ◽  
Frequency Domains ◽  
Measurement Results ◽  
Reader Antenna ◽  
Frequency Identification ◽  
Working Principle

Abstract In order to encrypt/encode data based on the magnitude level of the radar cross-section (RCS), we propose an approach with a precise estimation considering the resonant characteristics of a multipatch backscatter-based chipless radio frequency identification (RFID) dedicated for chipless tags depolarization. The working principle is based on the polarization mismatch between the tag and the reader antenna to control the magnitude of the backscatter, which allows a reliable detection in real environments. We introduce in this paper a new 4-bit chipless RFID tag with an enhanced RCS, based on a triangular patch antenna with multiple resonators. Additionally, we propose an ultra-wideband impulse radar (UWB-IR)-based reader that interrogates the chipless tag with a UWB pulse, and the received backscatter was studied in both time- and frequency-domains. The antenna was operating from 4.7 to 6.1 GHz, a band allocated for RFID systems. The obtained experimental measurement results in the environment of anechoic chamber were exceptionally relevant to validate the simulation results.

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

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2525
Author(s):  
Kawther Mekki ◽  
Omrane Necibi ◽  
Hugo Dinis ◽  
Paulo Mendes ◽  
Ali Gharsallah
Keyword(s):  
Radio Frequency Identification ◽  
Ultra Wideband ◽  
Frequency Spectra ◽  
Rfid Tag ◽  
Chipless Rfid ◽  
Frequency Identification ◽  
Main Components ◽  
The Time Domain ◽  
Antenna Mode ◽  
Structural Mode

A novel methodology is proposed to reliably predict the resonant characteristics of a multipatch backscatter-based radio frequency identification (RFID) chipless tag. An ultra-wideband impulsion radio (UWB-IR)-based reader interrogates the chipless tag with a UWB pulse, and analyzes the obtained backscatter in the time domain. The RFID system consists of a radar cross-section (RCS)-based chipless tag containing a square microstrip patch antenna array in which the chipless tag is interrogated with a UWB pulse by an UWB-IR-based reader. The main components of the backscattered signal, the structural mode, and the antenna mode were identified and their spectral quality was evaluated. The study revealed that the antenna-mode backscatter includes signal carrying information, while the structural mode backscatter does not include any tag information. The simulation findings were confirmed by experimental measurements obtained in an anechoic chamber environment using a 6-bit multipatch chipless RFID tag. Finally, the novel technique does not use calibration tags and can freely orient tags with respect to the reader.

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

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Khaled Issa ◽  
Muhammad A. Ashraf ◽  
Mohammed R. AlShareef ◽  
Hatim Behairy ◽  
Saleh Alshebeili ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Measurement Data ◽  
Ultra Wideband ◽  
Spectral Signature ◽  
Rfid Tag ◽  
High Data ◽  
Frequency Identification ◽  
Dual Polarized ◽  
5 Ghz

A novel compact dual-polarized-spectral-signature-based chipless radio-frequency identification (RFID) tag is presented. Specifically, an L-shape resonator-based structure is optimized to have different spectral signatures in both horizontal and vertical polarizations, in order to double the encoding capacity. Resonators’ slot width and the space between closely placed resonators are also optimized to enhance the mutual coupling, thereby helping in achieving high-data encoding density. The proposed RFID tag operates over 5 GHz to 10 GHz frequency band. As a proof of concept, three different 18-bit dual-polarized RFID tags are simulated, fabricated, and tested in an anechoic chamber environment. The measurement data show reasonable agreement with the simulation results, with respect to resonators’ frequency positions, null depth, and their bandwidth over the operational spectrum.

scholarly journals Design of Compact Trapezoidal Bow-Tie Chipless RFID Tag

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Lei Xu ◽  
Kama Huang
Keyword(s):  
Low Cost ◽  
Credit Cards ◽  
Bistatic Radar ◽  
Rfid Tag ◽  
High Data ◽  
Chipless Rfid ◽  
Data Capacity ◽  
Compact Design ◽  
Coding Capacity ◽  
Bow Tie

This paper presents a novel compact design of a low cost fully printable slot-loaded bowtie chipless RFID tag. The tag consists of two trapezoidal metallic patches loaded with multiple slot resonators. Slots with similar size or adjacent frequencies are loaded alternately on two bow-tie patches to double the number of data bits within the UWB frequency band without increasing the mutual coupling between slots. A coding capacity of 12 bits is obtained with 12 slots within a reasonable size of 35 mm×33 mm. RCS of the tag has been given by simulation. Measurements have been done using a bistatic radar configuration in the frequency domain and transmission coefficient is measured. The agreement between the simulation and measurement validates this new concept of design. This tag has high data capacity and low cost and can be directly printed on product such as personal ID, credit cards, paper, and textile because it needs only one conductive layer.

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