Summary
International Symposium on Antennas and Propagation
2006
Session Number:2B1a
Session:
Number:2B1a-5
Long Range Yagi-Uda UHF RFID Tag Antennas with Very Small Back-lobe
Kyounghwan Lee, You Chung Chung,
pp.1-4
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
A Yagi-Uda UHF RFID tag antenna with a long reading range has been designed. According to ISO-18000, the ERIP of a reader and reader antenna is limited as 6dB. Therefore, the gain of a tag antenna should be large to extend the reading range of a tag antenna. A Yagi-Uda antenna has been applied to a RFID tag antenna, and high gain and long reading range have been achieved. The different sizes antenna types of Yagi-Uda RFID tag antennas have been optimized to achieve the small size with very low back-lobe patterns. The patterns, reading range and sizes of the different types of Yagi-Uda UHF RFID tag antennas are compared.