Title :
A circularly polarized antenna for UHF RFID reader
Author :
Phatra, C. ; Krachodnok, Piyaporn
Author_Institution :
Sch. of Telecommun. Eng., Inst. of Eng. Suranaree Univ. of Technol., Nakhon Ratchasima, Thailand
Abstract :
This paper presents the design of a circularly polarized (CP) antenna for Radio Frequency Identification (RFID) reader using the ring slot microstrip antenna for Ultra High Frequency (UHF) band. The proposed antenna, which consists of a ring slot microstrip antenna with truncated U-slot, is placed on a FR4 substrate (εr = 4.5). The prototype antenna was fabricated with a total size of 100 × 100 × 1.6 mm3 which shows a measured impedance matching band of 830-970 MHz as well as measured rotating linear based circularly polarized radiation patterns.
Keywords :
UHF antennas; antenna radiation patterns; microstrip antennas; radiofrequency identification; FR4 substrate; UHF RFID reader; circularly polarized antenna; frequency 830 MHz to 970 MHz; impedance matching band; linear based circularly polarized radiation patterns; radio frequency identification reader; ring slot microstrip antenna; ultra high frequency band; Dipole antennas; Microstrip; Microstrip antennas; Radiofrequency identification; Slot antennas; UHF antennas; UHF RFID reader; a ring slot microstrip antenna; cicularly polarized antenna;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2014 11th International Conference on
Conference_Location :
Nakhon Ratchasima
DOI :
10.1109/ECTICon.2014.6839812
