Solution of Measuring the Impedance of Encapsulated RFID Chip
A solution of measuring the impedance of encapsulated RFID chip by designing a series of RFID tag antenna according to the conjugate impedance of chip is presented in this paper. After simulation, calculation, making this series of antenna,whose theory readable distance in UHF band are almost the same,the tags identification performance is measured with signal generator and spectrum analyzer.The best performance tag,whose antennas conjugate impedance is given to be the RFID chip packaging impedance,is picked out. This impedance is to indicate the impedance characteristic of the chip after the packaging process.This method can determine RFID chips packaging impedance with certain accuracy.
Yang Zheng Xiuping Li
Key laboratory of Universal Wireless Communications, Ministry of Education School of Telecommunication Engineering Beijing University of Posts and Telecommunications, 100876, China
国际会议
成都
英文
1518-1521
2010-05-08(万方平台首次上网日期,不代表论文的发表时间)