Compact Circularly Polarized RFID Tag Antenna with an Embedded U-shaped Feedline for Metallic Surfaces
A passive radio frequency identification(RFID)tag antenna with circular polarization(CP)radiation is proposed to operate at 902-928MHz and mount on metallic surfaces.A U-shaped terminal short-circuited feedline welded to a tag-chip is embedded in a rectangular slot to achieve a coupled feeding and a good impedance matching.By employing two truncated corners and two L-shaped slots with unequal length on the patch,a good left-hand circular polarization(LHCP)and compact size are obtained.The measured impedance bandwidth of the antenna is 85MHz(875-960 MHz),while the simulated 3-dB CP bandwidth is 6MHz(912-918 MHz).The proposed tag antenna shows reasonable read ranges when mounted on the metal plate in the following experiment.
Te Pan Shuai Zhang Zhibin He Hui Liu Sailing He
Centre for Optical and Electromagnetic Research Academy of Advanced Optoelectronics,South China Norm The Royal Institute of Technology,Stockholm,Sweden Centre for Optical and Electromagnetic Research Academy of Advanced Optoelectronics,South China Norm
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
1567-1571
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）