Creation of a Soft Circular Patch Antenna for 5G at a Frequency of 2.45 GHz

This paper presents the study and design of a flexible circular patch antenna implanted on a bio-sourced substrate for industrial, scientific, and medical applications. The frequency chosen for the study is 2.45 GHz. Return loss and radiation pattern measurements. An improvement in the gain of this antenna is also investigated in this study. This antenna offers adequate performance to meet the needs of 5G users. This antenna is printed on a polyester substrate with a thickness of h = 0.3 mm, a relative permittivity εr = 3.2, a loss tangent equal to 0.003, and a patch radius equal to 0.85 mm. In addition, this antenna provides the following results: reflection coefficient S11 = − 13.26 dB, bandwidth BW = 0.12 GHz, gain G = 5.6, directivity D = 5.8 dB, and efficiency η = 96.55%.