文章基本信息

标题：RFID Tag Antenna Coupled by Shorted Microstrip Line for Metallic Surfaces
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作者：Choi, Won-Kyu ; Kim, Jeong-Seok ; Bae, Ji-Hoon 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2008
卷号：30
期号：4
页码：597-599
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：This letter presents the design of a small and low-profile RFID tag antenna in the UHF band that can be mounted on metallic objects. The designed tag antenna, which uses a ceramic material as a substrate, consists of a radiating patch and a microstrip line with two shorting pins for a proximity-coupled feeding structure. Using this structure, impedance matching can be simply obtained between the antenna and tag chip without a matching network. The fractional impedance bandwidth for <3 dB and radiation efficiency are about 1.4% and 56% at 911 MHz, respectively. The read range is approximately from 5 m to 6 m when the tag antenna is mounted on a metallic surface.
关键词：RFID;tag antenna;small antenna;impedance matching