Design of CPW Fed Quad Port MIMO Antenna for Sub-6 GHz 5G Application

Compatibility and efficiency are the two important factors that need to be considered in current wireless technology. Maintaining good MIMO parameters, such as ECC and DG, can help achieve these goals. A compact dimension of 45 x 45 mm2 is utilized to build the quad-port MIMO structure. A compact CPW-fed single element of dimension 20 mm x 20 mm with a -10 dB bandwidth between 5.1 GHz and 5.85 GHz is used to design a compact MIMO structure. The distance between each single antenna element is 5 mm, and the elements are placed in an orthogonal orientation, which enables good isolation. The MIMO design has good isolation over the entire operational band, with a value of less than -30 dB. The proposed antenna design has an ECC value of 0.0003 and a DG value of around 10 dB. Also, the design shows good radiation characteristics and positive gain. Ansys HFSS software is used to carry out all necessary simulations.