Title :
Segmented Coupling Eye-Shape UHF band near field antenna design
Author :
Li, Xiuping ; Liao, Jiankun ; Yuan, Yong ; Yu, Dan
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
A segmented coupling eye-shape(SCES) near-field UHF RFID reader antenna is proposed and designed for item level identification with 15 cm read range and 8 cm read width. The bandwidth of the SCES antenna is around 11 MHz(860 ~ 871 MHz) under the condition of VSWR less than 2.0, which can cover the Europe standard (865 MHz - 868 MHz) completely. In addition, SCES antenna has low gain, less than 2.8 dBi, which is smaller than conventional far-field reader antenna (typical 6 dBi). Finally, in the read range measurement by using the impinj UHF button near field tag, 16.1 cm is obtained. It matches well with simulated results by using Ansoft HFSS.
Keywords :
UHF antennas; loop antennas; radiofrequency identification; Ansoft HFSS; Europe standard; RFID reader; SCES antenna; UHF band near field antenna; UHF button near field tag; far field reader antenna; frequency 865 MHz to 868 MHz; item level identification; segmented coupling eye shape; Antenna measurements; Circuit simulation; Educational technology; Impedance; Laboratories; Magnetic fields; Magnetic resonance; Millimeter wave technology; Radiofrequency identification; UHF antennas; Ansoft HFSS; SCES; item level; near-field;
Conference_Titel :
Microwave Conference, 2009. APMC 2009. Asia Pacific
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-2801-4
Electronic_ISBN :
978-1-4244-2802-1
DOI :
10.1109/APMC.2009.5385468
