A wideband circularly polarized rectangular dielectric resonator antenna (DRA) fed by a single feeding mechanism has been studied theoretically and experimentally. The purpose of the study is to determine how adding a parasitic strip next to the flat surface metallic feed would affect various far‐ and near‐field antenna characteristics. Initially, the basic antenna design, i.e., the Tshape feed known as antenna A, produced a 4.81% impedance matching bandwidth (|S11| −10 dB). Due to the narrow and undesirable results of the initial antenna design, antenna‐A was updated to the antenna‐B design, i.e., Yagi‐Uda. The antenna‐B produced a decent result (7.89% S11) as compared to antenna‐A but still needed the bandwidth widened, for this, a parasitic patch was introduced next to the Yagi‐Uda antenna on the rectangular DRA at an optimized location to further improve the results. This arrangement produced circular polarization (CP) waves spanning a broad bandwidth of 28.21% (3.59–3.44 GHz) and a broad impedance |S11| bandwidth of around 29.74% (3.71–3.62 GHz). These findings show that, in addition to producing CP, parasite patches also cause the return loss to rise by a factor of almost three times when compared to results obtained with the Yagi‐Uda‐shape feed alone. Computer simulation technology was used for the simulation (CST‐ 2017). The planned antenna geometry prototype was fabricated and measured. Performance indicators show that the suggested antenna is a good fit for 5G applications. The simulated outcomes and measurements match up reasonably.
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