A RF Antenna Design Method for Partial Discharge Detection Based on Coplanar Waveguide Feeding

Abstract-In this paper, a new type of microstrip antenna is designed using coplanar waveguide feeding as the feeding method of the antenna, which is used for partial discharge detection in high-voltage substation equipment. The basic structural parameters of the antenna are calculated by theoretical formulas, and the original model of the antenna is designed. Model the antenna in High Frequency Structure Simulator (HFSS). The effects of main structural parameters such as the length of the rectangular radiating patch, the width of the conduction band and the width of the ground plane on the performance of the antenna are studied, and these parameters are optimized. The results show that in the working frequency band of $500 \mathrm{MHz} \sim 1120 \mathrm{MHz}$, the value of input return loss S11 is less than -10, and the value of standing wave ratio is less than 2. In addition, the antenna has good resonance characteristics in the entire working frequency band, and is capable of meeting the needs of the radio frequency detection method.