A new Technique to Generate Circular Polarization in Periodically Deformed Rectangular Dielectric Resonator Antenna using PMC Boundary Approximation

In this paper, a new procedure to produce broadside circular polarization (CP) in modified rectangular dielectric resonator antenna (DRA) has been presented. The dielectric resonator is deformed periodically in stairshaped form along anti-clockwise direction. The concept of perfect magnetic boundary conditions at the interface of air and dielectric resonator has been successfully applied in this work. Final proposed antenna shows input impedance bandwidth and axial ratio bandwidth of 35% (3.34 - 4.76 GHz) and 8.5% (3.70- 4.03 GHz) respectively.