A Miniature Chip Antenna Design for a Passive UHF RFID Tag to Be Built in a Portable Device
In this paper, a miniature antenna for a passive UHF RFID tag is designed, which may be built in a portable device. Matching techniques for a Gen2 tag IC are employed to enhance the readable distance of the tag for long-range reading purposes, where quasi-lumped and lumped elements are used to match the chip antenna to the tag IC having complex input impedance. A commercial simulator, HFSSTM is used to analyze the performance of the antenna. Also, measurements in an anechoic chamber of the RFID education and research center at National Taiwan University of Science and Technology are performed to evaluate the readable range of the chip tag, which is more than 5m for a reader with an EIRP equal to 4 W. The chip antenna operating in the 900MHz RFID band proposed here has dimensions of only 10×9.5×0.8mm3. Thus, this miniature tag may be flexibly built in a portable device to allow long-range reading.
Yu-Shu Lin Hsien-Wen Liu 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
1257-1260
2009-03-23（万方平台首次上网日期，不代表论文的发表时间）