Annular cavity filter based on multilayer fluting dielectric plate piles up

The utility model discloses an annular cavity filter based on multilayer fluting dielectric plate piles up, including at least three -layer dielectric plate, a waveguide feed port and the 2nd waveguide feed port, it has the line of rabbet joint to open on every layer of dielectric plate, opens the dielectric plate that has the line of rabbet joint and from left to right stacks gradually inclosed annular cavity of formation, and the line of rabbet joint on the first layer dielectric plate of the left side is connected with a waveguide feed port, and the line of rabbet joint on the first layer dielectric plate of the right is connected with the 2nd waveguide feed port, the line of rabbet joint on the dielectric plate carries out copper facing or the processing of heavy copper. The utility model discloses an adjust the size of the line of rabbet joint in the number of piles, all dielectric plates of dielectric plate to and feed coupling slot's position, multimode that can control filter and transmission zero's p