A global SAW ID tag with large data capacity

Author

Hartmann, Clinton S.

Author_Institution

RF SAW Inc., Richardson, TX, USA

Volume

1

fYear

2002

fDate

8-11 Oct. 2002

Firstpage

65

Abstract

The Global SAW Tag uses a recently-invented digital modulation based on simultaneous time position and phase shifting. A unique feature of this tag is that it satisfies global RFID requirements using the international 2.44 GHz ISM band. Precision amplitude and phase weighting of reflectors and accurate control of parasitic effects is critical to implementing this device. This tag has significantly more data bits, lower insertion loss, and smaller die area (i.e. lower cost) than previous SAW tags. These improvements eliminate the shortcomings that have previously limited the market for SAW RFID (radio frequency identification). A 2.44 GHz fundamental mode tag on 128° LiNbO₃ with 64-bit data capacity plus 16-bit error detection coding is described.

Keywords

lithium compounds; position measurement; security; surface acoustic wave devices; 2.44 GHz; 64 bit; Global SAW Tag; LiNbO₃; digital modulation; global SAW ID tag; identification devices; large data capacity; lower insertion loss; more data bits; parasitic effects; phase shifting; phase weighting; precision amplitude weighting; simultaneous time position; smaller die area; Costs; Digital modulation; Insertion loss; RFID tags; Radio frequency; Radiofrequency identification; Surface acoustic waves; Surface waves; Technical Activities Guide -TAG; Transponders;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE

ISSN

1051-0117

Print_ISBN

0-7803-7582-3

Type

conf

DOI

10.1109/ULTSYM.2002.1193354

Filename

1193354