A novel approach of maximizing code capacity in SAW-based RFID sysytems

Author

Kang, A-long ; Han, Tao ; Shui, Yong-an

Author_Institution

Dept. of Instrum. Sci. & Eng., Shanghai Jiaotong Univ., Shanghai, China

fYear

2010

fDate

10-13 Dec. 2010

Firstpage

331

Lastpage

336

Abstract

Surface acoustic wave (SAW) radio frequency identification (RFID) has its advantages over IC based RFID, but it has difficulties to possess the code capacity large enough for most practical applications. In this paper, a novel and effective encoding method is presented, which enables one to fabricate a tag with code capacity 3.5×10⁷ within a chip length of 8 mm, and a corresponding optimal way to increase the resolution in SAW RFID system is studied. Finally, some tags designed and fabricated for test is described. The experimental results demonstrate that all the codes are identified as design expected, and those tags can be used as temperature sensors with the average accuracy of 0.5 degrees.

Keywords

encoding; optimisation; radiofrequency identification; surface acoustic waves; SAW-based RFID systems; code capacity maximization; encoding method; radio frequency identification; size 8 mm; surface acoustic wave; Bandwidth; Delay; Encoding; Phase measurement; Radiofrequency identification; Surface acoustic waves; Temperature sensors; SAW RFID; resolution; temperature measurement; the encoding method;

fLanguage

English

Publisher

ieee

Conference_Titel

Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2010 Symposium on

Conference_Location

Xiamen

Print_ISBN

978-1-4244-9822-2

Type

conf

DOI

10.1109/SPAWDA.2010.5744330

Filename

5744330