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Implementation of four-port MIMO diversity microstrip antenna with suppressed mutual coupling and cross-polarized radiations

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A compact four-element MIMO microstrip antenna is designed, analyzed and proposed for high frequency modern wireless applications. Proposed antenna is compact in size and offers a frequency band of about 6 GHz ranging from 23 to 29 GHz with a peak gain of 7.1 dBi and suppressed mutual coupling and cross-polarization level. Presented antenna possess better diversity with minimum mutual coupling among its all four elements. Diversity is verified in terms of envelope correlation coefficient, directive gain, total active reflection coefficient and ratio of mean effective gain. All the diversity parameters are found within the appropriate limit standardized for a MIMO device. Experimental results of fabricated prototypes verified the proposed results.

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Correspondence to Mukesh Kumar Khandelwal.

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Sharma, S., Mainuddin, Kanaujia, B.K. et al. Implementation of four-port MIMO diversity microstrip antenna with suppressed mutual coupling and cross-polarized radiations. Microsyst Technol 26, 993–1000 (2020). https://doi.org/10.1007/s00542-019-04574-1

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