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

fYear

2014

fDate

14-17 May 2014

Firstpage

1

Lastpage

4

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 (ε_r = 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2014 11th International Conference on

Conference_Location

Nakhon Ratchasima

Type

conf

DOI

10.1109/ECTICon.2014.6839812

Filename

6839812