Experimental investigation and design of uwb mimo antenna with enhanced isolation

Abstract

—In this paper, a compact two ports Multiple Input Multiple Output (MIMO) antenna for Ultra Wide Band (UWB) application has been proposed. The presented antenna consists of two symmetrical radiators, developed on an FR4 substrate with an overall size of 34 × 18 × 1.6mm3. The proposed antenna is fed with a 50 Ω microstrip line. The antenna has good impedance matching in the range of UWB band. The isolation is lower than < −15 dB from 3.1 to 5 GHz and < −18 dB from 5 GHz to 11 GHz. Envelope Correlation Coefficient (ECC) < 0.01 and Diversity Gain (DG) < 9.96 dB. The performance of the proposed antenna is analyzed and examined in terms of return loss, gain, radiation efficiency, ECC, DG, and isolation between two ports.