The 15CL32G-16G-292FF from Planar Monolithics Industries is a Band Pass Filter with 1 dB bandwidth from 24 to 40 GHz. It has 40 dB rejection from 42 to 50 GHz. The filter is available in a module that measures 1.281 x 0.6 x 0.35 inches with 2.92 mm female connectors.