volume | PIER Journals

Abstract

A compact and novel star shaped fractal microstrip patch conformal MIMO antenna suitable for WLAN, vehicular communications (5.855-5.925 GHz) and Fixed Satellite Services (FSS) applications is proposed in this paper. Analysis of planar and conformal single element and four element MIMO antennas is presented. Proposed star shaped fractal MIMO antenna is prototyped on Polyamide substrate of geometry 104 x 30 x 0.4 mm³. It achieved an impedance bandwidth (S₁₁ < -10 dB) of 3.7 GHz operating from 4.53-7.86 GHz. Radiation patterns and surface current distribution are investigated at 5.9 GHz and 7.3 GHz center frequencies. A peak gain of 5.42 dB and 4.86 dB are obtained at 5.9 GHz and 7.3 GHz respectively. Radiation efficiency is more than 98% and MIMO performance parameters are also analyzed. Proposed conformal MIMO antenna showsfine diversity performance for WLAN, vehicular and FSS communications.

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Dr. Chiranjeevi Reddy Sereddy

Dr. Usha Devi Yalavarthi