Tunable eight-element MIMO antenna based on the antenna cluster concept

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Realising capacity demands of future wireless communications require improved spectral efficiency in the sub-6 GHz frequency bands. This study proposes a novel eight-element multiple-input-multiple-output (MIMO) antenna that can be tuned from 1.7 to 6 GHz. The design is based on the antenna cluster concept, where weighted feeding of multiple antenna elements is used to modify the operating frequency. This study extends the theory of the concept to account for multiple separate clusters, thus enabling it to be used for MIMO. The proposed antenna achieves over 60% efficiency at frequencies above 3 GHz, and the system exceeds the ergodic capacity of the ideal 7 × 7 MIMO in that band.


Original languageEnglish
Pages (from-to)959-965
Number of pages7
JournalIET Microwaves, Antennas and Propagation
Issue number7
Publication statusPublished - 12 Jun 2019
MoE publication typeA1 Journal article-refereed

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