Optimization of a compact conical horn antenna system for high power microwaves in the 4 to 6 GHz range

High power microwave radiation in the 4-6 GHz range is currently being studied in compact structures. A conical horn antenna is being developed that radiates high power microwaves in the 4 to 6 GHz range into high gain and highly directive radiation patterns from the TE₁₁ mode in the feeding circular waveguide. Utilizing finite element modeling techniques, the behavior of these high power electromagnetic waves can be accurately described inside the waveguide as well as in the near and far field regions. These techniques in turn improve the quality of high power experiments performed on the compact structure. Presented are the modeling results of high power electromagnetic parameters in the compact structure, in the near, and in the far field regions.