Title :
Circularly polarized antenna with U-shaped strip for RFID reader operating at 902–928 MHz
Author :
Wang, Zhongbao ; Fang, Shaojun ; Fu, Shiqiang ; Li, Xiaoming
Author_Institution :
Sch. of Inf. Sci. & Technol., Dalian Maritime Univ., Dalian, China
Abstract :
A circularly polarized patch antenna is proposed to operate at 902-928 MHz for Radio Frequency Identification (RFID) reader applications. The antenna is composed of a U-shaped strip and a square patch with truncated corners. By means of the U-shaped strip feed technique, the VSWR of the patch antenna is less than 1.2. In addition, the structure of the proposed antenna is simple and low-cost. Simulation results show that the proposed antenna has an impedance bandwidth (1.2:1 VSWR) of about 123 MHz (865-988 MHz), a 3dB axial ratio bandwidth of about 28 MHz (902-930 MHz), and a gain level of about 8.8 dBi.
Keywords :
UHF antennas; antenna feeds; electromagnetic wave polarisation; microstrip antennas; radiofrequency identification; U-shaped strip feed technique; axial ratio bandwidth; bandwidth 123 MHz; bandwidth 28 MHz; bandwidth 865 MHz to 988 MHz; bandwidth 902 MHz to 930 MHz; circularly polarized patch antenna; frequency 902 MHz to 928 MHz; gain 8.8 dB; impedance bandwidth; radio frequency identification reader; CP; Patch antenna; RFID reader; U-shaped strip;
Conference_Titel :
Signals Systems and Electronics (ISSSE), 2010 International Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-6352-7
DOI :
10.1109/ISSSE.2010.5606978
