Design and Implementation of Dual Circular Polarized Antennas with Integrated RFID Reader

Document Type : Primary Research paper

Authors

Assistant professor, Department of ECE, Anurag Group of Institutions

Abstract

The Design and Implementation of Dual Circular Polarized Antennas with Integrated RFID Reader is proposed in this paper. It consists of an annular ring slot radiator and a hybrid patch coupler. The hybrid patch coupler is integrated with the annular ring slot antenna to radiate the circular-polarized wave, while size of the antenna remains the same. Both the impedance bandwidth and axial ratio bandwidth of the proposed design almost cover the entire UHF band of RFID system and it has the features of easy fabrication and low cost. To verify the proposed design, a prototype is fabricated. Measured results agree well with the simulated results.