By Arnaud Vena, Etienne Perret, Smail Tedjini
Chipless RFID in line with RF Encoding Particle: recognition, Coding and analyzing System explores the sphere of chipless id in response to the RF Encoding Particle (REP). The booklet covers the opportunity of gathering info remotely with RF waves (RFID) with completely passive tags with out twine, batteries, and chips, or even published on paper. regardless of the numerous merits of RFID, deployment remains to be hindered through numerous monetary and technological elements. between those limitations are the excessive expense of tags, loss of reliability and protection within the info inside the RFID chip, and the way tags are 'recycled.'
This publication makes a speciality of the advance of chipless RFID tags, representing a brand new relatives of low-budget tags. With this know-how details is extracted from the electromagnetic reaction of the tag, which relies in simple terms on its geometry. a variety of suggestions were constructed by means of the authors to extend the quantity of knowledge, decrease the skin of the tag, or enhance the robustness of detection. concerns reminiscent of recognition utilizing paper substrate, the improvement of a not pricey detection method, and measurements in a true atmosphere were addressed for sensible implementation.
- Introduces the chipless RFID REP procedure in comparison to classical chipless RFID, RFID, and barcode technologies
- Includes an illustration of the sensible and fiscal capability of chipless RFID expertise, with precise shows and discussions of alternative attempt benches and comparisons
- Presents intimately a variety of examples of chipless tags which are capable of take on particular difficulties: sensitivity of detection, encoding density, robustness of detection, challenge of tag orientation, tags and reader expense, and compliance with emission standards
- Focuses at the improvement of chipless RFID tags, representing a brand new relations of not pricey tags
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Additional info for Chipless RFID Based on RF Encoding Particle. Realization, Coding and Reading System
1] According to the quality factor of the resonant circuit, a more or less pronounced frequency selectivity will be obtained. To detect this type of tag, the reader must perform a scan around the resonance frequency. A sensitive receiver located at the detector level will pick up the signal which is retransmitted by the loop as a function of frequency. If the tag is present, a resonance peak followed by a resonance dip is detected [FIN 10]. TagSense proposes an anti-theft detection system based on this principle.
From a conceptual point of view, there is no major difference with the operating principle used in conventional RFID. However, the manufacturing process using the printing method and the production cost should approach that of chipless RFID. 1. Temporal tags The first developments which took place in chipless RFID technology were inspired by the operation of conventional RFID tags which code the information as a function of time. Due to the absence of any logical sequencer in a chipless tag, the approach which was undertaken to code information consisted of adapting the type of pulse coding used in certain radio remote controls.
We also show that for the dimensions of 15 × 30 mm², it is possible to obtain very considerable delays, namely, of 10 ns. It is also possible to cascade several groups of “C-section”, so as to increase the quantity of information present on a tag [NAI 13b]. 2. Frequency tags The second approach used is based on the frequency signature of the tag for the information coding. Unlike a temporal system, the information contained in the tags is based on a variation of amplitude or phase as a function of frequency and not anymore as a function of time.