“…Because of the growing use of RFID systems, many different areas of research have also been developed to improve the performance of such systems. A few of these areas of research include novel antenna designs (Rao et at., 2005;Calabrese & Marrocco, 2008;Amin et al 2009), analysis on the backscatter properties of RFID tags (Yen et al, 2007;Feng et al, 2006), mutual coupling between RFID tags (Li et al, 2008;Owen et al, 2009) and the deployment of RFID systems to complex and extreme environments (Qing & Chen, 2007;Sanford, 2008). There are many aspects to each area of research in RFID.…”