Title :
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
fDate :
April 30 2013-May 2 2013
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;
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
DOI :
10.1109/RFID.2013.6548146
