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The Journal of The Korea Institute of Intelligent Transport Systems Vol.6 No.3 pp.101-110
UHF RFID 리더기용 원형편파 안테나 설계
Design of a Circularly Polarized Antenna for UHF Band RFID Reader
Abstract
This study has designed a circular polarization antenna for UHF bandwidth RFID reader. As a result of performance test of the antenna designed it is found that return loss (S11) is about -45.529dB at 914MHz, which is relatively small, and antenna gain is about 6.09dBi. It has also been confirmed that impedance matching is about and it can be applied to every RFID reader. Therefore, the antenna is designed to have higher gain of circular polarization by improving reception, which is one of the most important parameters of RFID reader and is expected to be extensively used to recognize multi-tag in the distance.
