3-D pyramidal and collective Ku band pass filters made in alumina by ceramic stereolithography

Summary form only given, as follows. An original 3D pyramidal geometry for a low loss and compact filter is described in this paper. Thanks to the 3D ceramic stereolithography process, high unloaded quality factor resonators have been fabricated into a low footprint 4-pole Chebyshev filter. The 3D technologies used for manufacturing the filters in one ceramic part; their plating and etching has lead to a low insertion loss filter working at 17.5 GHz. This paper goes into details on this filter dedicated to space applications.