Impedance Characterization of RFID Tag Antennas and Application in Tag Co-Design
In this paper,an experimental methodology for the characterization of the impedance of balanced RF identification(RFID)tag antennas is presented,and the application of the pro-posed method in RFID tag co-design is demonstrated.The bal-anced tag antenna is considered as a two-port network and the impedance of the antenna is characterized using network parame-ters.In the measurement,the antenna is connected to the two ports of a vector network analyzer through a test fixture.The influence of the test fixture is deembedded by using a port-extension tech-nique and the antenna impedance can be extracted directly from the measured S-parameters.The proposed method is useful in practical RFID applications for co-designing the RFID tag with the attached platforms for enhancing the tag performance.An example of co-designing an ultra-high-frequency RFID tag with a plastic Sushi plate is demonstrated.The co-designed tag antenna achieves conjugate matching with the application-specific integrated circuit so that the reading range of the RFID tag is greatly enhanced.
Balanced antenna co-design impedance RF identification(RFID) tag ultra high frequency(UHF)
Xianming Qing Chean Khan Goh Zhi Ning Chen
Institute for Infocomm Research,Singapore 138632
国际会议
深圳
英文
81-89
2021-12-01（万方平台首次上网日期，不代表论文的发表时间）