Substrate integrated waveguide small-sized prism type horn antenna

This invention relates to a substrate integrated waveguide prism-like horn antenna including a medium base board, in which, two rows of metal posts are set on the medium base board and form a substrate integrated rectangular waveguide and a H-side horn section connected mutually, an arc radiation side connected with the medium base board is set on two walls of the opening of the H-side horn section and the horn mouth, the two rows of metal posts are connected with micro-band feed lines composed of a line of 50Ohm and a transformation taper, and the waveguide and the up and down surfaces of the medium base board are metals.