Diversity performance of multiport dielectric resonator antennas

Dielectric resonator-based multiple-input multiple-output antennas and channel characteristic analysis

“…The much larger variation in measured against simulated capacity can be explained by the fact that practical channels in the laboratory environment had dominant LOS components that reduced the contribution of weak reflections from other objects in the room, thereby reducing channel capacity. Moreover, the practical channels are always partially correlated since the experimental multiport CDRAs have lower port isolation than simulated ones [14]. This results in the measured channels showing one stronger eigenmode whereas the other eigenmode becomes slightly less significant as illustrated in Fig.…”

“…For modelling and experimental studies, the CDRA used in this paper has a radius r ¼ 6.35 mm, height h ¼ 5.08 mm and dielectric constant 1 r ¼ 37, and it is mounted on a 50 ×50 mm 2 ground plane. Individual transmitting or receiving port radiation patterns are orthogonal, leading to good diversity performance with very low correlation coefficients of around 0.01 for simulation and 0.125 for experiments and mean effective gain (MEG) ratio less than +0.48 dB [14].…”

“…CST Microwave Studio (CST MWS) is used to simulate the line-of-sight (LOS) propagation between dual-polarised cylindrical DRAs [14] and record the transmission parameters for the channel matrices. For illustrative purposes, a 10 dB average SNR is used to determine the capacity CCDFs using the method.…”