Design and Analysis of a Microstrip Patch Antenna Operating at 38 GHz

This project focuses on the design of a Rectangular microstrip patch antenna (RMPA) optimized for operation at 38 GHz. Two different substrate materials—FR4 Epoxy and RT Duroid 5880—are evaluated to compare their influence on the antenna's performance. The antenna is initially developed as a simple patch and later enhanced by incorporating a Defected Ground Structure (DGS). Simulations are carried out using HFSS software to analyze key parameters such as return loss, gain, bandwidth, and VSWR. The findings indicate that RT Duroid 5880 outperforms FR4, offering higher gain and a broader bandwidth. Additionally, the implementation of DGS significantly boosts the antenna's performance by improving gain and impedance matching. This design is well-suited for high-frequency applications, including 5G communication and radar systems. Keywords: Rectangular microstrip patch antenna, FR4 Epoxy, RT Duroid 5880, Defected Ground Structure (DGS).