Vertically Printable Evanescent Mode Filters

This work presents a new topology of evanescent mode filter (EMF) that allows for its efficient additive manufacturing (AM). Chamfered ridges which avoid the appearance undesired supports when printed vertically (i.e., along propagation axis filter) are considered. strategy ensures accurate tolerances, reduced cost and it also enables monolithic EMF as part feed chain. A circuit model is developed to explain behavior well speed up overall design. The proposed concept methodology validated experimentally through measurement prototype.