TABLE OF CONTENTS Young Joong Yoon
Radio frequency identification (RFID) is currently one of the growing technologies for wireless identification and it brings considerable influence on areas of antenna development. The aim of this chapter is to provide antenna designs with the most comprehensive knowledge. This chapter is designed to introduce the RFID system briefly, and to provide the design and characteristics of many types of reader and tag antennas so that users can acquire an overall understanding of antennas in RFID areas. Moreover, information about reader antennas related to mobile communication for mobile RFID systems, characteristics of tag antennas on metallic surface, and measurement for tag antennas are included.
An RFID system is a kind of wireless communication system that identifies an object without contact. RFID technology is next generation technology that will replace the BarCode system, as well as improve the slow recognition speed and increase the small storage capacity of the current system. Connected to a network, it will be applicable to various areas such as industry, distribution, public facilities, military services, and telecommunication.
The RFID system was developed in the 1970s to trace missile trajectories. In the 1980s, as the size and the cost of RFID tags were reduced, RFID started seeing use for animal management, distribution of products, and other industries. In the 1990s, with the development of radio frequency technologies, cheap, high technology tags were developed and various tag types such as cards, labels, and coins...
