Waveguide-type filter

The invention discloses a waveguide-type filter, and relates to a microwave device. The ridge of a ridge waveguide is provided with a slot-tooth structure, and the slots and teeth are alternately arranged on the section, parallel to the bottom surface, of the slot-tooth structure in an axial direction. The bottom surface makes direct contact with the ridge. The beneficial effects of the invention are that the filter is good in bandwidth performance, and can be widely used for various types of systems, such as a communication base station, a satellite navigation system, a broadcast system, a radio astronomy system and a passive monitoring system. 波导型滤波器，涉及微波器件。本发明在脊波导的脊上设置有槽齿结构，所述槽齿结构为在平行于底面的截面上呈现槽和齿沿波导的轴线方向交替排列的结构，所述底面为与脊直接接触的面。本发明的有益效果是，频带宽性能好，可广泛用于通信基站、卫星导航、广播、射电天文和无源监测等多种系统。