Electromagnetic coupling in RFID

Abstract

Radio frequency identification (RFID) systems are evolving rapidly as a result of (1) increased awareness of the technology; (2) development of improved techniques for multiple tag reading; (3) realization in the business community of the benefits of widespread adoption in the supply chain; (4) adoption by designers of sensible concepts in the arrangement of data between labels and databases; (5) development of efficient datahandling methodologies in the relevant supporting communication networks; (6) appreciation of the need for cost reduction; and (7) development of new manufacturing techniques that will achieve manufacture of billions of labels at acceptable costs. This chapter is designed to provide support to RFID system designers in what is probably the least understood aspect of system design, that of the electromagnetic propagation to and from the label.