By Nemai Chandra Karmakar, Mohammad Zomorrodi, Chamath Divarathne
Introduces complex high-capacity facts encoding and throughput development concepts for totally printable multi-bit Chipless RFID tags and reader systems
The ebook proposes new ways to chipless RFID tag encoding and tag detection that supersede their predecessors in sign processing, tag layout, and reader architectures. The textual content is split into major sections: the 1st part introduces the basics of electromagnetic (EM) imaging at mm-wave band to reinforce the content material means of Chipless RFID platforms. The EM Imaging via man made Aperture Radar (SAR) approach is used for facts extraction. the second one part offers a number of shrewdpermanent tag detection suggestions for latest chipless RFID structures. A Multiple-Input and Multiple-Output (MIMO) established tag detection process improves the spectral potency and raises info bit means. The ebook concludes with a dialogue of ways the MIMO technique could be mixed with the picture dependent strategy to introduce an entire answer with a quick imaging method of chipless RFID platforms. The booklet has the next salient features:
- Discusses new methods to chipless RFID tags equivalent to EM imaging, excessive capability information encoding, and strong tag detection techniques
- Presents ideas to reinforce facts content material skill of tags and trustworthy tag detection for the readers at unlicensed microwave and mm-wave 2.45, 24 and 60 GHz instrumentation, clinical and scientific (ISM) frequency bands
- Includes case reviews of real-world applications
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Extra info for Advanced Chipless RFID: MIMO-Based Imaging at 60 GHz - ML Detection
To enhance the content capacity of the tag, it was proposed to use all available industrial, scientific, and medical (ISM) radio frequency bands. Based on the proposal, every ISM band is capable of encoding a maximum of 5 bits. This expectation is based on simulation results. 2) substrate creates detectable resonances. However, based on the simulation results, the occurred resonances have 4–6 dB resonance deep that would be difficult for detection purposes in real scenarios. It is very obvious that the same structure is not capable of creating detectable resonances if the tag is printed on a lossy paper substrate with low conductive ink.
D. Girbau, J. Lorenzo, A. Lázaro, C. Ferrater, and R. Villarino, “Frequency-Coded Chipless RFID Tag Based on Dual-Band Resonators,” IEEE Antennas and Wireless Propagation Letters, vol. 11, pp. 126-128, 2012. 35. F. Costa, S. Genovesi, and A. Monorchio, “A Chipless RFID Based on Multiresonant High-Impedance Surfaces,” IEEE Transactions on Microwave Theory and Techniques, vol. 61, 2013. 36. S. Mukherjee and G. Chakraborty, “Chipless RFID Using Stacked Multilayer Patches,” in Applied Electromagnetics Conference (AEMC), 2009, Kolkata, 2009.
The phase of the reflection by a given element is dependent on its distance to the reader. This means that a slight bending of the tag surface causes a significant phase shift specifically in higher frequencies. There are suggestions to mitigate the phase ambiguity; however, the solutions only apply to chipped tags for low frequencies, below 1 GHz, and no work is reported on chipless systems [49,50]. As a hybrid-based system, the combination of phase deviation and frequency position of the resonances was proposed as the data encoding approach in a chipless RFID system .
Advanced Chipless RFID: MIMO-Based Imaging at 60 GHz - ML Detection by Nemai Chandra Karmakar, Mohammad Zomorrodi, Chamath Divarathne