Design of Mic Broadband Contiguous Multiplexer

A novel design and construction technique for MIC broadband filters and contiguous multiplexer is presented. A contiguous multi-plexer having outputs 4-8, 8-12 and 12-18 GHz has been constructed on a single substrate only 2" x 1 1/4", with low passband loss in each channel and highly selective responses at the bandedges. The multiplexer meets most environmental conditions and is very reproduceable.