A Robust Octagon Shape with Defected Ground Structure Patch Antenna for Wi-Max Range

This Wi-Max technology play an important role for next generation communication system such as 5G communication. The efficiency improvement of worldwide interoperability for microwave access is burning topic between researchers. The proposed research work based on robust octagon shape patch antenna for various Wi-Max ranges. In this proposed research work for result enhancement as well as efficiency improvement apply defected ground structure (DGS). For design and simulation use CST Microwave Studio and Core i-5 8GB RAM 2.8GHz processor utilize. The simulated result of the proposed design are proposed Octagon use FR-4 $\varepsilon_{\mathrm{r}}=4.4$ as a substrate. There are four bands are obtain in this range. The cover frequency range in between 4 to 9 GHz. The obtain different reflection coefficient are at 4.7, 7, 8.8, 9.4 GHz obtain return loss −45,−20,−16.8,−15 in decibel. The proposed design not only shows good result in S-11 as well as shows good result in band width, gain and other antenna parameters also. Proposed design compare with latest and previous octagon antenna as shows better result as compare to other previous work.