Abstract
This work proposes a four elements sub-6 GHz multiple-input multiple-output (MIMO) antenna to operate within a frequency range of 1.6–4.4 GHz to serve 5G new radio (NR) n77 (3.3–4.2 GHz) and n78 (3.3–3.80 GHz) bands. The antenna elements are orthogonally placed to increase isolation. Defected ground structure and parasitic elements are used to reduce mutual coupling. The suggested antenna has been designed over FR-4 substrate on high frequency structure simulator software. The overall size of the antenna is 40 mm × 40 mm × 1.6 mm. The dimension of each element is 16.2 mm × 14.3 mm × 1.6 mm. An “EH” slot into the radiating element and protruded stubs are incorporated to improve bandwidth and impedance matching. The overall characteristics of the antenna is found to be better than some of the recently reported works making it a potential candidate for MIMO applications.
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