An Octagonal Patch Antenna for Enhanced 5G Technology

In this paper, we present the design of an Octagonal Patch Antenna (OPA) that operates at 28 GHz for 5G applications. This single antenna is printed on top of a Rogers RT5870 substrate with a dielectric constant of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\epsilon_{r}=\mathbf{2.2}$</tex> and a thickness of hs= 1.275 mm. The simulated results offers a wide bandwidth of BW=6.871 GHz with a return loss parameters value of S11= -28.68 dB and a Voltage Standing Wave Ratio (VSWR) value of 1.07. It shows also an important gain of G=6.78 dB, a directivity value of D=8.09 dBi, and efficiency value of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\eta=\mathbf{0.838}$</tex> at its resonant frequency. The presented antenna exhibits good performance for 5G applications. The simulated result were carried out using CST Microwave Studio.