Design and Experiments of the Gw High-Power Microwave Feed Horn

Design and optimization of high-power microwave (HPM) feed horn by combining the aperture fleld with radiation patterns are presented in the paper. The optimized feed horn in C band satisfles relatively uniform aperture fleld, power capacity higher than 3GW, symmetric radiation patterns, low sidelobes, and compact length. Cold tests and HPM experiments were conducted to investigate the radiation patterns and power capacity of the horn. The theoretical radiation patterns are consistent with the cold test and HPM experimental results. The power capacity of the compact HPM horn has been demonstrated by HPM experiments to be higher than 3GW.