Millimeter wave plane diaphragm waveguide bandpass filter

The utility model discloses millimeter wave plane diaphragm waveguide bandpass filter, including fixed first cavity and the second cavity of looks lock, the cell body has all been offered on the surface that first cavity and second cavity contacted, and two cell body locks form the equal opening in both ends in waveguide chamber, waveguide chamber, still be provided with the plane diaphragm between first cavity and the second cavity, the plane diaphragm includes the 5 rank filtering diaphragms that set up between the terminal surface of first backing sheet and second backing sheet, and 5 rankfiltering diaphragms all lie in the waveguide intracavity, the material of first cavity, second cavity and 5 rank filtering diaphragms is the metal. The utility model has the characteristics of in -band insertion loss is little, and out of band rejection nature is high. 本实用新型毫米波平面膜片波导带通滤波器，包括相扣合固定的第腔体和第二腔体，第腔体和第二腔体相接触的表面均开设有槽体，两个槽体扣合形成波导腔，波导腔的两端均开口；第腔体和第二腔体之间还设置有平面膜片，平面膜片包括在第支撑片和第二支撑片的端面之间设置的5阶滤波膜片，5阶滤波膜片均位于波导腔内；第腔体、第二腔体和