Beam steering antenna for high power microwave application

A design of waveguide slot-array antenna for high power applications is introduced. The slots are on the narrow side of waveguide. By achieving uniform radiation of each slot, it is possible to expand the array; besides, it is possible to realize beam scanning in the azimuth direction by adjusting the broad wall dimension of waveguide. The slot antenna has high power capacity while it is working in traveling wave state without the enhancement of electric field and in a vacuum environment.