Design of a Compact Quasi-Self-Complementary UWB-MIMO Antenna with Dual Band-Notched Characteristics for Wireless Communication Applications

The proposed work contains a quasi-self-complementary (QSC) half-cut flower-shaped ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna with dual-band-notch characteristics. The overall size of the antenna is 27 x 39 mm(2), which offers impedance bandwidth from 2.67 GHz to 11.7 GHz. The inter-port isolation is more than 15 dB over the FCC defined UWB range of frequencies. A reverse 2-shaped slit is etched off from a flower-shaped patch to reject the interfering WiMAX/C-band (3.28-4.19 GHz), whereas an inverse P-shaped stub is placed near the feed arm a notch at the WLAN band (5.1-6.15 GHz). Further, the performance of the proposed antenna is analysed by comparing the simulated results with the fabricated ones. Moreover, diversity parameters such as envelope correlation coefficient (ECC), channel capacity loss (CLL), mean effective gain (MEG), effective diversity gain (EDG) and total active reflection coefficient (TARC) are computed, which makes the proposed QSC UWB-MIMO antenna a suitable candidate for high-speed wireless applications.