Bulk acoustic wave true time delay for UWB passive backscatter RFID

Author

Westafer, R.S. ; Davis, K.S. ; Maloney, J.G. ; Hunt, W.D.

Author_Institution

Adv. Concepts Lab. (ACL), Georgia Tech Res. Inst., Atlanta, GA, USA

fYear

2013

fDate

April 30 2013-May 2 2013

Firstpage

131

Lastpage

135

Abstract

An electrically small bulk acoustic wave true time delay is proposed for use in a coherent, passive, and transistorless RFID tag operating around 2.45 GHz. The active area of the time delay component is just 100×100 microns, and a delay of about 10 ns is achieved. Experimentally, maximum power transfer was obtained near 1.4 GHz. A link budget for the realized device is presented, and RCS modulation is quantified by measurements conducted in an indoor anechoic range.

Keywords

acoustic delay lines; backscatter; bulk acoustic wave devices; modulation; radar cross-sections; radiofrequency identification; ultra wideband communication; BAW; RCS modulation; UWB passive backscatter RFID tag; acoustic wave delay lines; electrically small bulk acoustic wave true time delay; indoor anechoic range; link budget; transistorless RFID tag; Bandwidth; Delay lines; Delays; Reflector antennas; Surface acoustic waves; BAW; RCS; UWB; acoustic; backscatter; delay; delay line;

fLanguage

English

Publisher

ieee

Conference_Titel

RFID (RFID), 2013 IEEE International Conference on

Conference_Location

Penang

Print_ISBN

978-1-4673-5748-7

Electronic_ISBN

978-1-4673-5749-4

Type

conf

DOI

10.1109/RFID.2013.6548146

Filename

6548146