A Novel Design Approach for Co/Cross-Polarizing Chipless RFID Tags of High Coding Capacity

In this paper, we propose a novel design of low-profile fractal chipless tags with unique specific electromagnetic responses. The tags are designed using cellular automata (Game of Life) technique to ensure the randomness of the generated fractal tags. The tags are simulated in CST Microwave Studio for the frequency range of 2 to 10 GHz. The tags are realized on FR4 substrate and their radar cross-section (RCS) characteristics are analyzed for the nine different tags for the three different polarizations (horizontal, vertical, and oblique). Each tag shows a unique signature resonance response. The obtained results of coding capacity (16-20 bits), coding spatial capacity (1-1.25 bits/cm2), coding spectral capacity (2.15-2.9 bits/GHz), and coding density (0.15-0.18 bits/GHz x cm2) of realized tags are very good. The presented tags could be used for the development of secure RFID systems.

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Mastering the Electromagnetic Signature of Chipless RFID Tags

Chipless and Conventional Radio Frequency Identification ◽

10.4018/978-1-4666-1616-5.ch008 ◽

2012 ◽

pp. 146-174 ◽

Cited By ~ 9

Author(s):

Smail Tedjini ◽

Etienne Perret ◽

Arnaud Vena ◽

Darine Kaddour

Keyword(s):

Cost Reduction ◽

Figure Of Merit ◽

Rapid Development ◽

Rfid Tags ◽

Passive Components ◽

Chipless Rfid ◽

Electromagnetic Signature ◽

Coding Capacity ◽

Global Parameters

The rapid development in wireless identification devices and subsequent applications is at the origin of intensive investigations in order to fulfill various constraints that can exist when implementing applications in practice. Chipless technologies have many advantages. They are fundamentally wireless and powerless devices, and can be all passive components, which potentially means infinite lifetime. However, chipless technology is still in its infancy age, even if it is the most effective for cost reduction. One of the most important features of chipless is coding capacity and ways to imprint it into the device. This chapter will review and discuss various coding techniques. It will address a comparison of the most relevant coding techniques. For sake of clarity some global parameters that can be used as figure of merit will be introduced and applied to compare different practical chipless tags.

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Novel notch modulation algorithm for enhancing the chipless RFID tags coding capacity

2015 IEEE International Conference on RFID (RFID) ◽

10.1109/rfid.2015.7113069 ◽

2015 ◽

Cited By ~ 19

Author(s):

Ahmed El-Awamry ◽

Maher Khaliel ◽

Abdelfattah Fawky ◽

Mohamed El-Hadidy ◽

Thomas Kaiser

Keyword(s):

Rfid Tags ◽

Chipless Rfid ◽

Coding Capacity

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Miniaturized Chipless RFID Tags Based on Periodically Loaded Microstrip Structure

Engineering, Technology & Applied Science Research ◽

10.48084/etasr.3055 ◽

2019 ◽

Vol 9 (5) ◽

pp. 4679-4684

Author(s):

M. Added ◽

K. Rabaani ◽

S. Chabaan ◽

N. Boulejfen

Keyword(s):

Radio Frequency Identification ◽

Low Cost ◽

Resonant Circuit ◽

Rfid Tags ◽

Frequency Range ◽

Rfid Tag ◽

Chipless Rfid ◽

Frequency Identification ◽

Coding Capacity ◽

Microstrip Structure

A compact chipless radio frequency identification (RFID) tag-based on slow-wave technology is introduced in this paper. The tag consists of a resonant circuit based on open stub resonators periodically loaded by shunt stubs allowing a coding capacity of 9 bits and operating in a frequency range from 2 to 4GHz. The receiving and transmitting antennas of the tag are particularly designed to minimize the tag size as much as possible. The proposed tag presents a robust bit pattern with a compact and fully printable structure using FR4 substrate for a low-cost tag.

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