Isolation Enhancement Using a Hybrid Technique in an Eight-Element UWB MIMO Antenna Design

A. Mchbal, N. Amar Touhami, H. Elftouh, A. Dkiouak
2020 Advanced Electromagnetics  
A high order multiple input multiple output (MIMO) antenna assembly is designed for Ultra-Wideband (UWB) applications. The antenna configuration is based on a peculiar arrangement of the radiating elements. A defected microstrip structure is also introduced on the feedlines. The use of a novel technique, the so-called ports-shift, is here discussed. In the proposed antenna, a protruded ground branch structure is employed in combination of three parasitic stubs so as to enhance isolation and
more » ... dance matching over the UWB frequency band. The results show that the presented antenna exhibits a good impedance matching which is about -10 dB with a high mutual coupling 15 dB, and envelope correlation coefficients (ECC) smaller than 0.15. The antenna also exhibits good diversity gain of about 9.5, and a good efficiency that varied between 56% and 91% and total active reflection coefficient of less than -20 dB. Which makes it a good candidate for UWB applications.
doi:10.7716/aem.v9i3.1436 fatcat:azpwyv4bsbgszjrzft4zf7qt6y