Mutual Coupling Reduction in Circularly Polarized Dielectric Resonator MIMO Antenna Arrays Using Space diversity

Abstract

An effective technique for reducing the mutual coupling between novel feed Rectangular dielectric resonator antennas (RDRA’s) using a space diversity, which is further examined and demonstrated. This is achieved by separating the two closely spaced RDRA’s antennas at the optimum distance. Both RDA's are placed in E-Plane. Using the proposed techniques, a new current path is introduced which in result not only reduces the mutual coupling between the two DRAs but also produce the circular polarization. The proposed technique reduced the mutual coupling (MC) ~ 8.65 dB. Average Gain of
~ 5.9 dBi is achieved throughout. Moreover, 3-dB axial ratio bandwidth of 6.7% is achieved. The design is simulated in professional simulating tool i.e. CST, which use FET computational technique that is further validated through FEM, and significant resemblance in results is examined