Design and Miniaturization of UHF RFID Reader Antenna

This paper presents a circularly polarized microstrip single layer patch antenna miniaturization with parasitic element for the reader of UHF RFID. The antenna is designed to operate at a band frequency of 820 MHz to 950 MHz allocated for UHF RFID. The antenna simulation is analyzed using CST STUDIO SUITE 2014. In order to ensure that the design is in good performance, all of the antenna parameters are optimized. The result of antenna parameter such as radiation pattern, gain and return loss are also considered. The proposed antenna is lightweight, low profile, simple structure and fabricated easily.