Compact 60GHz diplexer in metallized plastic technology for gigabit wireless links

A 60GHz diplexer filter for Gigabit wireless applications is presented. Modern high performance thermoplastics and improved PVD metal plating technologies are combined to obtain high production yield and low cost of assembly. The diplexer filter is based on 10- pole band pass blocks combined by a purposefully designed waveguide junction. A very compact outline is achieved by stacking pairs of resonators, which are fabricated as cavities inside a central part of the filter body. Three plastic molded parts are fabricated in perfect fit and assembled by a glue- and solder-less press-fitting process.