Article Abstract

	Title:	2D localisation using SAW-based RFID systems: a single antenna approach
	Author:	Darmindra D. Arumugam, Vijayakrishnan Ambravaneswaran, Amar Modi, Daniel W. Engels
	Address:	Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX 76019-0016, USA. ' Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX 76019-0016, USA. ' Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX 76019-0016, USA. ' Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX 76019-0016, USA
	Journal:	International Journal of Radio Frequency Identification Technology and Applications 2007 - Vol. 1, No.4  pp. 417 - 438
	Abstract:	This paper presents a novel Real-Time Localisation System (RTLS) based upon 2.45 GHz Surface Acoustic Wave (SAW) Radio Frequency Identification (RFID) systems. The system utilises a novel localisation method that combines the angular rotation of the RFID reader's antenna system with the inherent Time-of-Flight (TOF) distance measurement capabilities of the SAW RFID system. The system design rests upon the sound physical fundamentals of electromagnetic radiation and SAW operation. The system was implemented and empirically evaluated. It was determined to provide accurate 2-Dimensional (2D) location of the SAW tag that is within 3.17 cm of the actual location for a reader to tag range of up to 10 m.
	Keywords:	radio frequency identification; SAW RFID; surface acoustic wave; real-time localisation; RTLS; single-antenna single-reader; SASR; electromagnetic radiation.
	DOI:	10.1504/IJRFITA.2007.017750
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