Calibration method for periodic surface based chipless tags

Author

Costa, Francois ; Genovesi, Simone ; Monorchio, Agostino ; Manara, Giuliano

Author_Institution

Dipt. Ing. dell´Inf., Univ. di Pisa, Pisa, Italy

fYear

2014

fDate

8-9 Sept. 2014

Firstpage

78

Lastpage

81

Abstract

The aim of this paper is to introduce a novel calibration method for chipless tags. The proposed tag is based on a periodic impedance surface with an asymmetric unit cell geometry. The method relies on a differential encoding of amplitude or phase of the reflected signal. The unit cell of the tag comprises several concentric loops of rectangular shape which exhibits a different response when interrogated along two orthogonal planes of incidence. The novel calibration procedure is also preliminary verified experimentally for a simple single bit tag configuration. This work opens the way to a more practical implementation of chipless tags reading.

Keywords

frequency selective surfaces; periodic structures; radiofrequency identification; asymmetric unit cell geometry; calibration method; chipless RFID; frequency selective surfaces; high-impedance surfaces; periodic HIS surfaces; periodic impedance surface; periodic surface based chipless tags; rectangular shaped concentric loop; Calibration; Encoding; Phase measurement; Radiofrequency identification; Reflection coefficient; Resonant frequency; Surface impedance; Chipless RFID; High-Impedance Surfaces (HISs); RFID; differential encoding; frequency selective surfaces (FSSs);

fLanguage

English

Publisher

ieee

Conference_Titel

RFID Technology and Applications Conference (RFID-TA), 2014 IEEE

Conference_Location

Tampere

Type

conf

DOI

10.1109/RFID-TA.2014.6934204

Filename

6934204