Abstract
Design of a microstrip patch UHF reader parasitic array antenna for RFID (Radio Frequency Identification) applications is proposed, in which the design patches antenna realized by loading two truncated at the corner of the ordinary rectangular patch antenna. The patch was sorted in a 2 x 2 array configuration, meanwhile the feed network was constructed by coaxial feed concept. The parasitic elements are added on the same layer of the substrate and at the right and left side of the every patch. The physical parameters of the novel structure are simulated and optimized by using commercial computer simulation technology (CST) simulation packages. The simulation results show the high gain antenna is achieved which is 11.15 dBi. The measured results of the return losses and the radiation pattern achieved a good agreement with the simulated results.
Highlights
Radio Frequency Identification (RFID) technology has grown much attention from all over the world
The worldwide operating frequency for Ultra High Frequency (UHF) RFID system is between 860 MHz 960 MHz with some variances in frequency from region to region depending on the radio regulation of that region [3]
A microstrip (MS) antenna is a popular approach to UHF RFID reader antennas because of their several advantages such as simple fabrication, low profile and adequate directivity [5][6]
Summary
Radio Frequency Identification (RFID) technology has grown much attention from all over the world. The gain performance of the antenna can be increased by using array configuration and adding the parasitic elements. A folded-dipole antenna with parasitic elements are designed by using FR-4 substrate and produced gain of 4.4 dBi. Work by [13] proposed a high gain circularly-polarized dual band antenna array for UHF and microwave band RFID application. The results of the antenna show that maximum gain of 13.9 dBi. The proposed antenna used the concept of 2 x 2 antenna array configuration and parasitic elements in order to increase the antenna gain. A novel design of microstrip patch array antenna with parasitic elements for RFID reader and resonate on the UHF RFID bands of 860-960 MHz is presented. The theoretical simulations are achieved by means of CST platform
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