Download Chipless RFID Based on RF Encoding Particle. Realization, by Arnaud Vena, Etienne Perret, Smail Tedjini PDF

By Arnaud Vena, Etienne Perret, Smail Tedjini

Chipless RFID according to RF Encoding Particle: consciousness, Coding and interpreting System explores the sphere of chipless identity in accordance with the RF Encoding Particle (REP). The publication covers the opportunity of gathering info remotely with RF waves (RFID) with absolutely passive tags with out cord, batteries, and chips, or even published on paper. regardless of the various merits of RFID, deployment remains to be hindered via numerous financial and technological elements. between those boundaries are the excessive fee of tags, loss of reliability and safeguard 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 kinfolk of least expensive tags. With this know-how details is extracted from the electromagnetic reaction of the tag, which relies simply on its geometry. a number of recommendations were built through the authors to extend the volume of knowledge, decrease the skin of the tag, or enhance the robustness of detection. issues corresponding to cognizance utilizing paper substrate, the advance of a cost-efficient detection process, and measurements in a true atmosphere were addressed for functional implementation.

  • Introduces the chipless RFID REP process compared to classical chipless RFID, RFID, and barcode technologies
  • Includes an indication of the sensible and monetary strength of chipless RFID expertise, with certain shows and discussions of alternative attempt benches and comparisons
  • Presents intimately various 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 rate, and compliance with emission standards
  • Focuses at the improvement of chipless RFID tags, representing a brand new relatives of within your means tags

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Additional info for Chipless RFID Based on RF Encoding Particle. Realization, Coding and Reading System

Example text

The acoustic wave then propagates at a low speed in the substrate. Reflectors are positioned throughout its path, in order to generate reflections in the direction of the antenna. These reflections will, therefore, be converted into electromagnetic waves and will be reradiated toward the reader. The reflectors are metal elements placed on the piezoelectric substrate and can have different forms and geometric associations. The design of SAW tags proposed by Nysen et al. 2(a)). Thus, as soon as the acoustic wave reaches one of the reflectors, it is converted into an electromagnetic wave and returns to the antenna.

The acoustic wave propagation speed is 3,000–4000 m/s [FIN 10], or 100,000 times slower than the speed of light. This makes it the ideal component to create a delay line. SAW tags are composed of an antenna, often a dipole antenna, directly connected to an electro-acoustic transducer. The operating principle is as follows. A wave in the form of a short electromagnetic pulse is sent by the reader and is captured by the tag antenna. The acoustic wave then propagates at a low speed in the substrate.

Antenna). 45 GHz for the latter. 2. a) SAW tag proposed by Nysen et al. [NYS 88]; b) RFSAW tag developed by Clinton et al. [HAR 02]. zip Finally, the features of sensors are possible with a SAW tag [FIN 10]. For this, it is enough to add a transducer directly connected to a sensor with a resistive or a capacitive load, which is sensitive to an environmental parameter. It is thus possible to detect the temperature with a thermistor. Another process uses a resonator whose frequency is a function of the ambient temperature.

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