volume | PIER Journals

Abstract

In this paper, a novel decoupling strategy for a MIMO antenna is proposed. This MIMO antenna system consists of two symmetric inverted L shaped antenna elements. To improve the isolation between radiating antenna elements, split ring arrays, neutralisation line and ground slots are employed. The MIMO antenna operates at 6.27 GHz. Neautralization line aids in cancelling the coupling by introducing reverse coupling. Ground slots introduce band-stop characteristic to nullify the coupling effect, and split ring array blocks the electromagnetic coupling reaching the other antenna element. The isolation parameters |S₁₂| and S₂₁ obtained are less than -21 dB. The diversity parameters envelope correlation coefficient and diversity gain are investigated. Envelope correlation coefficient is within acceptable limit. These diversity parameters indicate that good diversity performance is achieved by the proposed MIMO antenna. Measured results are in good agreement with simulated ones. The suggested antenna is appropriate for many wireless applications, including IEEE 802.11 and 802.16 standards, as we deal with the sensitive environment.

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Ms. Revati C. Godi

Prof. Rajendra R. Patil