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Handbook of Smart Antennas for RFID Systems by Nemai Chandra Karmakar

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CHAPTER 2

INTRODUCTION TO RFID SYSTEMS

SUSHIM MUKUL ROY

Department of Electrical and Computer Systems Engineering, Monash University, Clayton, Victoria, Australia

NEMAI CHANDRA KARMAKAR

Department of Electrical and Computer Systems Engineering, Monash University, Clayton, Victoria, Australia

2.1 INTRODUCTION

Radio-Frequency Identification (RFID) is a wireless data capturing technique from a tagged item. An RFID system comprises an interrogator (reader) and a tag or transponder. A middleware is a buffer stage that encodes the data captured from the tag in meaningful identification codes. RFID tags or radio transponders are high-frequency electronic circuits that broadcast the position or attributes of items to which they are attached. This allows these items to be remotely detected, identified, and tracked. In a broader perspective, RFID fall into the specialized category of Automatic Identification (Auto ID) that uses an electromagnetic signal to communicate between the reader and the transponder.

In the era of “silent commerce,” most of the business processes are run by various forms of Auto ID technologies. Auto ID collects data related to objects and feeds that data into the database management system without much human intervention. The process of identification is preprogrammed and runs like clockwork with high level of efficiency and reduced cost. This advantage of automatic identification makes the Auto ID technology so attractive to different business processes in recent ...

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