Paper Thick Film Printed Substrate Integrated Waveguide Filters for 5G

A substrate integrated waveguide (SIW) compact diplexer operating on 5G bands is designed and simulated. The diplexer is fabricated using thickfilm printed/stenciled additive process on an Alumina substrate. The diplexer is three-port reciprocal network with one combined RF port, one low band (LB) port, and high band (HB) port targeting the 24 GHz and 28 GHz bands used in MIMO applications. Each band is designed to have at least 1 GHz of bandwidth to support high data rate applications.