S. Lamultree - Faculty of Engineering, Rajamangala University of Technology Isan Khonkaen Campus, Khonkaen, Thailand
M. Phalla - Faculty of Engineering, Rajamangala University of Technology Isan Khonkaen Campus, Khonkaen, Thailand
P. Kunkritthanachai - Faculty of Engineering, Rajamangala University of Technology Isan Khonkaen Campus, Khonkaen, Thailand
C. Phongcharoenpanich - School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand

A design of a wideband bidirectional pattern antenna, accomplished by the integration of a circular patch, crescents as parasitic elements, encompassed by a circular ring adjoining the ground plane, to operate over the mid-band ۵G sub-۶ GHz applications is reported. It is come up with a copper grazed on FR۴ substrate with relative permittivity of ۴.۳ and height of ۱.۶ mm. The proposed antenna is fed by a ۵۰-ohm coplanar waveguide, which is printed on the same side of the radiating circular patch. A concise antenna model with dimensions of ۴۵ × ۴۵ × ۰.۶ mm۳ was made up and investigated to affirm the simulation outcomes. Good consistency was confirmed between experimental and simulation results. The proposed antenna has the benefit of bidirectional pattern with a good gain of ۵.۲۴ dBi and wide bandwidth covering of ۱۱۱.۴% (۱.۸۱-۶.۳۶ GHz) — it is one of good postulants for ۵G new radiation application especially for indoor environment, narrow, and long path services area like corridor, tunnel, and train station, etc.

circular patch antenna, Wideband antenna, parasitic elements, ۵G applications