volume | PIER Journals

Abstract

In this paper, a compact dual-band MIMO antenna for WI-MAX and WLAN applications with improved isolation is proposed. The proposed design consists of two counter facing F shaped monopoles placed closely to each other with edge to edge spacing of 10 mm (0.1167λ₀ at 3.5 GHz). Each monopole element operates over 3.5 and 5.8 GHz bands. The isolation over the operating dual bands is achieved by using an elliptical slot and a rectangular parasitic strip. S₁₁ < -10 dB is achieved over 3.2-3.8 GHz and 5.7-6.2 GHz with S₁₂ < -20 dB. The overall dimension of the proposed antenna is 30 × 26 mm². The proposed antenna has correlation coefficient < 0.03, diversity gain > 9.8 dB with stable radiation pattern over the operating dual bands. The measured results are in good agreement with the simulated ones. The proposed antenna is a suitable candidate for MIMO applications.

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Dr. Pratima Chabbilal Nirmal

Professor Anil Nandgaonkar

Professor Sanjay Laxmikant Nalbalwar

Professor Rajiv Kumar Gupta