A four-element UWB MIMO antenna using SRRs for application in satellite communications

Abstract

This paper proposes a method for designing a new <em>ultra wide band</em> (UWB) multiple-input multiple-output (MIMO) antenna with two and four elements. First we presented an ultra-wide band antenna we studied these performances. Then, we studied the application of metamaterials to the design of MIMO antennas for miniaturization and the performance of antennas, in order to guarantee the proper functioning of the MIMO system with a much reduced separation distance between the radiating elements (λ/12), where the coupling can be very weak. The application of these circular double ring SRRs materials on the front plan of the antenna has contributed to the increasing of the antenna performance is studied in terms of S-Parameters, efficiency, diversity gain (DG), radiation properties and envelop correlation coefficient (ECC). It offers advantages such as the reduction of weight and congestion that is beneficial for their integration into satellite communications systems.

A Compact MIMO Antenna for UWB Applications

“…A high mutual coupling degrades radiation characteristics and the system performance significantly. For example, the signalto-interference ratio (SINR) decreases, as does the convergence of array algorithms and radar cross section (RCS) [7][8][9]. So, the challenges for the designers are the conditioning in reduced spaces, and the proper design of user terminals and base stations.…”

A compact antenna design for UWB MIMO applications

“…Intrinsic parameters of the antenna are modified, like terminal impedances and reflection coefficients. This mutual coupling between elements degrades radiation characteristics and the system performance significantly, for instance, decreases the signal to interference ratio (SINR) of an adaptative array, the array algorithms convergence and radar cross section (RCS) [3], [6], [7].…”

“…Several solutions have been proposed to reduce mutual coupling between the elements such as Electromagnetic Band Gap (EBG) structures [7]- [9], parasitic element slots [11], [12], defected ground structures (DGS) [13]- [15], and perforated ground planes.…”