An L-shaped dual-band multiple-input multiple-output (MIMO) rectangular dielectric\nresonator antenna (RDRA) for long term evolution (LTE) applications is proposed. The presented\nantenna can transmit and receive information independently using fundamental TE111 and higher\norder TE121 modes of the DRA. TE111 degenerate mode covers LTE band 2 (1.85ââ?¬â??1.99 GHz),\n3 (1.71ââ?¬â??1.88 GHz), and 9 (1.7499ââ?¬â??1.7849 GHz) at fr = 1.8 GHz whereas TE121 covers LTE band\n7 (2.5ââ?¬â??2.69 GHz) at fr = 2.6 GHz, respectively. An efficient design method has been used to reduce\nmutual coupling between ports by changing the effective permittivity values of DRA by introducing a\ncylindrical air-gap at an optimal position in the dielectric resonator. This air-gap along with matching\nstrips at the corners of the dielectric resonator keeps the isolation at a value more than 17 dB at both\nthe bands. The diversity performance has also been evaluated by calculating the envelope correlation\ncoefficient, diversity gain, and mean effective gain of the proposed design. MIMO performance has\nbeen evaluated by measuring the throughput of the proposed MIMO antenna. Experimental results\nsuccessfully validate the presented design methodology in this work.
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