A 4-element Dual-Band MIMO Antenna for 5G Smartphone

A four-element planner, dual-band MIMO antenna for 5 generation (5G) smartphone application was proposed which can be implemented in wireless handsets. In this research, the design of an H-shaped monopole antenna was developed and simulated using computer simulation technology (CST) software. The antenna was fabricated on an FR4 substrate with the dimensions of 150 × 75 × 0.8 mm3. The two 5G new radio bands, n79 band (4.4–5 GHz), and LTE band 46 (5.1–5.9 GHz) are covered by the antenna without using any additional decoupling structure. The performance characteristics of the antenna were analyzed, including the reflection coefficient, radiation pattern, envelope correlation coefficient, and efficiency. The antenna displayed excellent characteristics, such as good impedance matching (return loss > 10 dB), high isolation (> 18.8 dB), high efficiency (> 60%), and low envelope correlation coefficient (ECC, < 0.03) across the operating frequencies. The proposed MIMO antenna is simple and compact, leaving enough space inside handheld mobile terminals for the integration of other circuits.