Title :
Inverted-Z RFID tag antenna for circularly polarized operation
Author :
Horng-Dean Chen ; Ruenn-Bo Tsai ; Ching-Han Tsai ; Ting-Yuan Liu
Author_Institution :
Dept. of Optoelectron. & Commun. Eng., Nat. Kaohsiung Normal Univ., Kaohsiung, Taiwan
Abstract :
A novel inverted-Z tag antenna for circularly polarized operation in the UHF band RFID application is proposed. The structure of the proposed tag antenna comprises two inverted-Z strips, one printed on top side and the other on bottom side of the substrate, perpendicularly to each other. The measured 10-dB impedance bandwidth of the tag antenna is 33 MHz (897-930 MHz), and its 3-dB axial-ratio bandwidth is 32 MHz (899-931 MHz). The antenna gain and reading range of about 1.38 dBic and 14 m, respectively, were also demonstrated.
Keywords :
UHF antennas; electromagnetic wave polarisation; radiofrequency identification; UHF band RFID application; antenna gain; bandwidth 32 MHz; bandwidth 33 MHz; circularly polarized operation; frequency 897 MHz to 930 MHz; frequency 899 MHz to 931 MHz; inverted-Z RFID tag antenna; Antenna measurements; Antennas; Frequency measurement; Gain; Impedance; Impedance measurement; Radiofrequency identification; Tag antenna; circular polarization; radio frequency identification (RFID);
Conference_Titel :
Antennas and Propagation (ISAP), 2014 International Symposium on
Conference_Location :
Kaohsiung
DOI :
10.1109/ISANP.2014.7026809
