By Nemai Chandra Karmakar, Mohammad Zomorrodi, Chamath Divarathne
Introduces complex high-capacity information encoding and throughput development thoughts for absolutely printable multi-bit Chipless RFID tags and reader systems
The e-book 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 augment the content material ability of Chipless RFID platforms. The EM Imaging via artificial Aperture Radar (SAR) method is used for info extraction. the second one part offers a couple of clever tag detection innovations for latest chipless RFID structures. A Multiple-Input and Multiple-Output (MIMO) established tag detection method improves the spectral potency and raises info bit capability. The e-book concludes with a dialogue of the way the MIMO process will be mixed with the picture dependent strategy to introduce an entire answer with a quick imaging method of chipless RFID platforms. The ebook has the subsequent salient features:
- Discusses new techniques to chipless RFID tags resembling EM imaging, excessive skill info encoding, and powerful tag detection techniques
- Presents ideas to reinforce info 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, medical and clinical (ISM) frequency bands
- Includes case reports of real-world applications
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Additional resources for Advanced Chipless RFID: MIMO-Based Imaging at 60 GHz - ML Detection
8) where θ is the 3-dB beamwidth of the antenna in radians, λ is the wavelength, D is the antenna physical size, and α is a constant reflecting the main lobe widening due to the weighting aperture. 8) is changed to θ3 dB = 50(λ/D) when θ is measured in degrees. 6 Required 3-dB beamwidth of reader antenna versus reading distance. 7 Antenna aperture size for 1◦ beamwidth. 7. 4, 24, and 60 GHz. 4, 24, and 60 GHz, only the 60 GHz band offers an antenna size that may be practical for a reading distance of 10–50 cm.
26. C. Mandel, M. Schüßler, M. Maasch, and R. Jakoby, “A novel passive phase modulator based on LH delay lines for chipless microwave RFID applications,” in IEEE MTT-S International Microwave Workshop on Wireless Sensing, Local Positioning, and RFID, Croatia, 2009. 27. S. Gupta, B. Nikfal, and C. Caloz, “Chipless RFID System Based on Group Delay Engineered Dispersive Delay Structures,” IEEE Antenna and Wireless Propagation letters, vol. 10, pp. 1366-1368, 2011. 28. H. Martínez, F. Paredes, and G.
In this communication, various approaches were studied in terms of their merits, frequency band usage, and tag size for one bit of content; then they concluded that the metamaterials can shrink the tag size hence enhancing the merits of the structure. Although in their study the timeand frequency-based systems were considered with the application of metamaterials, no information about the tag cost utilizing metamaterials was provided. 3 ❦ Phase-Domain-Based and Hybrid Chipless RFID Systems Phase-domain-based system is proposed as a method of data encoding to rely on the phase information of the backscattered signal.