Research on Optimization of the Monocone Antenna Feed Structure

In order to reduce the reflection at the feed-point of monocone antenna, the feed structure was optimized by studying the effect of the offset height between cone body and ground plane on reflection signals at feed-point and adding a matching ring at the junction of cone tip and cone body. The results show that the structure of the feed-point will be optimal when the offset height is 1 mm and the matching ring can effectively reduce the reflection at feed-point, however, the selection of matching ring radii should choice according to the frequency distribution of the voltage source and the specific problems that need to be solved.