High isolation MIMO antenna for 5G C-band application by using combination of dielectric resonator, electromagnetic bandgap, and defected ground structure

Abstract

High isolation between massive MIMO antenna elements is one of the important parameters that improves antenna performance, especially for 5G communication applications. In this study, we propose a design to improve isolation between elements to enhance the antenna performance. The proposed solution to improve the performance of massive MIMO antennas is to use a combination of dielectric resonator, electromagnetic bandgap (EBG) and defected ground structure (DGS) techniques at the frequency band 3.5 GHz as the 5G frequency band under 6 GHz. The material used is FR-4 which has a dielectric constant ($${\varepsilon }_{r}$$ ε r ) of 4.3. Simulation results and measurements between antenna elements show an improvement in mutual coupling, widening the bandwidth and increasing the gain of the antenna. The proposed design using the dielectric resonator antenna (DRA) by MIMO 8 × 8 16 port—64 elements and the addition of EBG and DGS structures on the ground plane—has shown to suppress mutual coupling parameter lower than without using DRA-EBG-DGS design by 15 dB, increase bandwidth to 246 MHz, increase gain to 24.7 dB and improve the overall envelope correlation coefficient (ECC) parameter.

Design and diversity performance analysis of C shape engraved miniaturised, and high gain Quad-Port MIMO antenna for 5 G and P2P communication

“…Furthermore, the integration of intelligent antenna technologies and sophisticated signal processing methods can augment isolation capabilities by dynamically adjusting the system to fluctuating radio frequency environments. In MIMO antennas, attaining optimal isolation is of the utmost importance to optimize the advantages of spatial diversity, enhance data transmission, and guarantee dependable and resilient wireless communication [50,51]. The isolation among different element responses is a critical parameter.…”

Comparative Design and Performance Analysis of Multiband MIMO Antenna for Sub-6 GHz 5G Network

“…A design to boost mMIMO antenna performance and improve isolation between antenna elements was presented by Sandi et al [13] in their article. They used a 5G frequency spectrum of 3.5 GHz with dielectric resonators, electromagnetic bandgap (EBG), and defected ground structure (DGS) approaches.…”

Investigation on Performance of Four Port MIMO Antenna Using Electromagnetic Band Gap for 5G Communication

“…A survey is made on different techniques to enhance the coverage of 5G wireless systems [14]. In [15], a MIMO antenna is designed with dielectric resonator, electromagnetic bandgap (EBG), and defected ground structure (DGS) techniques. Similar to DGS, EBG will enhance the performance of huge MIMO antennas for applications in the −6 GHz range.…”