Performance Improvement of Circular Patch Microstrip Antenna (CPMA) for Detecting Partial Discharge on High Voltage Equipment

Partial Discharge (PD) is a phenomenon that occurs at high voltage. PD measurement are crucial for determining the insulation condition of high-voltage equipment. One of the methods used to detect PD is the UHF method, which involves installing an antenna sensor. This paper presents a gradual parameter optimization approach for the circular microstrip patch antenna (CPMA) by adjusting the parameter values from the reference design. The proposed parameters such as feedline width (A), groundplane length (G), resistive loading width (F), and arm length (B). The optimization is performed gradually on these four parameters (A, G, F, and B). The objective of this optimization is to enhance the antenna’s performance and maximize PD detection in high-voltage equipment. In this study, the optimized results achieve a frequency bandwidth of 2.43 GHz, which is wider than the bandwidth of the reference design.