Abstract
In this article, a spearhead shaped dual element ultra-wide band (UWB) multiple input multiple output (MIMO) antenna with three notched bands is designed. The proposed antenna has the dimensions (28*18*1.6) mm3. To achieve the three notch a L-shaped and spoon-shaped slots are etched out from the rhombic shape radiating patch for application ARN, INSAT at (4.17-4.9) GHz and satellite communication at (7.1-7.75) GHz respectively and other inverted U-shaped slot is etched out from the feed line which achieves X-band application (8.5-9.6)GHz. In addition to this, the proposed antenna impedance bandwidth ranges from 3-11.3GHz with voltage standing wave ratio (VSWR>2) only for the selected notch band. The antenna achieves nil distortion with suitable omnidirectional radiation pattern which is good for ultra-wide band application. To show the diversity performance of the proposed antenna, the proposed antenna offers good isolation (s12/s21<-19db) with envelope correlation coefficient (ECC<0.005) and diversity gain of nearly 10db. Therefore, the proposed antenna with rejection capability is suitable for UWB application.
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