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Highly integrated eight-port broadband MIMO antenna exploiting polarization and pattern diversity

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Abstract

This paper presents the design of a highly integrated eight port broadband slot antenna. The proposed slot antenna has a smaller footprint (33 × 33 × 0.8 mm3) and is constructed using one-quarter of an annular slot ring antenna. The miniaturized antenna has a broadband impedance characteristics covering 3 GHz–9 GHz making the antenna suitable for broadcasting applications within the realized 6 GHz bandwidth. The unit cell antenna is made polarization diverse by exciting the unit cell antenna with two feeds. The antenna is then replicated to produce an eight-port MIMO antenna. Thus the proposed antenna provides both polarization and pattern diversity characteristics. The average peak gain of the proposed MIMO antenna is greater than 5.51 dBi and the efficiency is greater than 80% throughout the operating bandwidth. The prototype antenna is fabricated and the simulation results are validated. Furthermore, the MIMO parameters such as envelope correlation coefficient, diversity gain and mean effective gain are evaluated and presented.

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Correspondence to J. Premalatha.

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Premalatha, J., Sheela, D. Highly integrated eight-port broadband MIMO antenna exploiting polarization and pattern diversity. Analog Integr Circ Sig Process 110, 311–320 (2022). https://doi.org/10.1007/s10470-021-01887-y

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  • DOI: https://doi.org/10.1007/s10470-021-01887-y

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