A Compact Circular Polarized Tag Antenna in UHF Band for Metallic Object Application

摘要：

　　In this article,a compact RFID tag antenna operated on UHF band with circular polarization is proposed.The antenna is comprised of a radiating square with two pairs of unequal crossed slots to produce a circularly polarized(CP)radiation and a simple quarter-wave microstrip line to feed the patch.A tag chip is embedded between the microstrip line and a short-circuited stub line.The simulated result for-3-dB power reflection coefficient(PRC)is about 27MHz(904-931 MHz)that covers the RFID bands of North and South America and Taiwan(920-928 MHz)and its corresponding simulated 3-dB axial-ratio(AR)bandwidth is about 7MHz(910-917 MHz).The overall antenna size is 75mm×75mm×1.6mm at 915 MHz.The results show a perfect circularly polarized radiation.

作者: Yusha Liu Qi Liu Bo Xu Jun Hu

作者单位: Centre for Opt.& EM Research,Zhejiang Provincial Key Lab for Sensing Technologies Zhejiang University,Hangzhou,China

会议类型: 国际会议

会议名称: Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)

会议地点: 广州

会议语种:英文

页码: 609-611

在线出版日期: 2014-08-01（万方平台首次上网日期，不代表论文的发表时间）