A singly-fed wideband circularly polarized cylindrical dielectric resonator antenna using conformal half-loop excitation

A cylindrical dielectric resonator antenna (DRA) that is excited using a conformal rectangular open half-loop feed has been studied theoretically and experimentally. The proposed excitation has provided a measured circular polarization over a bandwidth of ~4.14% in conjunction with an impedance-matching bandwidth of ~20.55% over the same frequency range. The structure has been rigorously simulated using method of moments (MoM) model, where a good agreement has been achieved between computed and measured results.