Two asymmetric cylindrical dielectric resonator loaded dual port multiple‐input multiple‐output antenna for wide band application with circular polarization attributes

Abstract

A novel multiple-input multiple-output double asymmetrical cylindrical dielectric resonator antenna (MIMO-DCDRA) with modified stub line feed is discussed and proposed in this work. Two unequal CDRA are placed diagonally to each other and are electromagnetically coupled with feeding arrangement via two asymmetrical circular apertures. By performing the optimization of the dimensional parameters, a significant impedance bandwidth of 70.84% ranging from 2.87 to 5.76 GHz and axial ratio bandwidth (ARBW) of 34.89% is obtained. Antenna gain is about 5.0 dBi within the operating frequency. The proposed MIMO-DCDRA exhibits a low mutual coupling of (jS 21 j & jS 12 j < À20 dB) with the incorporation of a neutralization line. There are various diversity parameters that are also discussed in terms of mutual coupling, envelop correlation coefficient (ECC < 0.002), diversity gain (DG > 9.995), and channel capacity loss (CCL < 0.3 bits/s/Hz) over the entire impedance bandwidth.

Circularly polarized printed dual port MIMO antenna with polarization diversity optimized by machine learning approach for 5G NR n77/n78 frequency band applications

“…The axial ratio is determined by measuring the pattern in a Dual-Linear fashion. The axial ratio of the proposed antenna may be determined by performing the following steps 40 : The initial procedure involves orienting the proposed test antenna in the XZ plane, while maintaining a polar angle of θ = 0° and an azimuthal angle of ϕ = 0°. Determine the desired frequency interval for measuring the axial ratio.…”

Design of compact two‐port dual‐band dual‐polarized MIMO antenna for CBRS and WLAN sub‐6‐GHz applications

“…The majority of widely favored and commonly used MC strategies are outlined in this article. For example, using a defected ground structure (DGS), 18 dielectric resonator antennas, 19 complementary split‐ring resonators (CSRRs), 20 neutralization lines (NLs), 21 reconfigurable antennas, 22 parasitic patches or slot antennas, 23 metamaterial‐based antennas, 24 and other decoupling networks 25 . These strategies may alter coupling by attenuating, obstructing, or reducing the passage of surface current.…”