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A three-dimensional (3-D) inverted-L multi-input multi-output (MIMO) magnetoelectric dipole antenna comprising two coupled monopole feed antennas is developed for energyharvesting applications. Additionally, the electromagnetic band-gap (EBG) structure was used to improve the isolation (S 21 ) of the antennas. The bandwidth of the proposed antenna is up to 42.1% for 3-4.6 GHz, which covers the C-band (5G) applications of 3.3-3.8 GHz. The advantages of the proposed antenna are the following: low cross-polarization; good radiation patterns; stable and high gains (9.55 ± 0.35 dBi) in the operating band; all simulated and measured return loss of the antennas (S 11 and S 22 ) are below −10 dB; and the isolation between two antennas is below −15 dB. Finally, the proposed antenna is suitable for modern energyharvesting and 5G wireless sensor network systems.