A Dual-band Self-decoupled Monopole Antenna Pair for Terminal Devices

In this paper, a dual-band self-decoupled T-shaped monopole antenna pair is proposed for MIMO terminal devices. In the antenna structure, the two arms of each T-shaped monopole antenna can render dual complements simultaneously: while one pair of arms radiate in a frequency band with inherent inductive mutual coupling the other pair of arms provide capacitive coupling, naturally leading to an inductive-capacitive coupling cancellation. The concept of the dual-band self-decoupled antenna pair is verified by both EM simulation and an experimental prototype, whose frequency bands cover the LTE bands 42 and 43 (3.4–3.8 GHz) as the low band, and the entire N79 band (4.4–5.0 GHz) as the high band. The antenna pair is simple in structure while providing high ports isolation and equally high total efficiencies in the dual bands, which is favorable for MIMO capacity enhancements.