Microstrip Patch Antenna with Circular Polarization Loaded with Drumsticks Slots

Background & Objective: In this paper circularly polarized microstrip planar antenna is proposed in the 5-6 GHz frequency range. With the introduction of Drum sticks slot and a coaxial feed the antenna exhibits excellent Return loss and Axial Ratio characteristics during simulation. Further, a wider AR bandwidth is achieved in the antenna 3 with the introduction of central circular slots. The circularly polarized antenna is fabricated using Arlon AD 250 substrate and this paper presents its design and simulation using optimization engine HFSS. Conclusion: The substrate has a relative permittivity of 2.55 and thickness is 0.76mm.Various characteristics like return loss, impedance, gain, BW and directivity are presented.