Design and simulation of X-band HPM antenna based on leaky waveguide

An X-band high power microwave(HPM) antenna based on leaky waveguide was designed and investigated. Its radiation characteristics were determined by transverse resonance approach and numerical full wave simulation optimization. The simulation results indicate that, the antenna gain is 26.2 dBi, the aperture efficiency is above 70%, the power handling capacity is above 200 MW at 9.6 GHz, the reflection coefficient is less than -20 dB, and in far-field waveform deformation would not occur at the angle of maximum radiation in response to short pulses of tens of nanoseconds, which validate the feasibility of the antenna in HPM application.