Waveguide slot array heater

The utility model relates to a waveguide slot array heater, and belongs to the technical field of microwave heating. The antenna comprises a cylindrical resonant cavity, a curved waveguide which surrounds the cylindrical resonant cavity and is provided with a gap, and a waveguide feed source. Microwave energy generated by the magnetron is fed into the curved waveguide through the feed port to form standing waves, and the energy enters the cylindrical resonant cavity through waveguide slot radiation and is absorbed by materials in the cylindrical resonant cavity, so that the effect of heating the materials is achieved. According to the heating method, the phenomena of sparking and scorching caused by too high heating energy of the magnetron are avoided; and the gap array can enable the electric field fed into the cylindrical resonant cavity to be more uniform, so that the material can achieve a more uniform heating effect. Therefore, the heating device has the characteristics of simple structure, low cost, hig