A Metal Tag Antenna for Passive UHF RFID Applications
In this paper, a passive tag antenna operating in RFID UHF band is presented, which may be mounted on a metallic object. This metal tag antenna design is composed of a slot radiator, a capacitive coupling structure and a coplanar waveguide (CPW) feed to provide a good power transfer to the tag IC. No additional matching network is required to achieve a conjugated matching between the tag IC and the proposed tag antenna. A commercial simulator, HFSS is used to analyze the proposed antenna performance. This tag antenna for the 900MHz RFID band has dimensions of only 93(L)×20(W)×3.4(H)mm3, and therefore can be easily attached on metal surfaces, such as license plates for vehicle managements. Also, the antenna with low cost, easy fabrication and high efficiency are achieved 0by using a 0.4mm FR4 PCB attached on a 3mm PP substrate. For the metal tag mounted on the license plate, the maximum readable range measured in an anechoic chamber is more than 7m for a reader with an EIRP equal to 4 W.
Hsien-Wen Liu Yu-Shu Lin Kuo-Hsien Wu Chang-Fa Yang
Department of Electrical Engineering National Taiwan University of Science and Technology Taipei,Taiwan
国际会议
Progress in Electromagnetics Research Symposium 2009(2009年电磁学研究新进展学术研讨会)(PIERS 2009)
北京
英文
1261-1263
2009-03-23（万方平台首次上网日期，不代表论文的发表时间）