000K utf8 1100 $c2022 1500 eng 2050 urn:nbn:de:gbv:8:3-2024-00462-3 2051 10.1109/JMW.2022.3167250 3000 Miek, Daniel 3010 Berger, Andre 3010 Brandao, Ana 3010 Brouczek, Dominik 3010 Crestvolant, Vittorio Tornielli di 3010 Hoft, Michael 3010 Lorente, Jose Antonio 3010 Martin-Iglesias, Petronilo 3010 Schwentenwein, Martin 4000 Ceramic Additive Manufactured Monolithic X-Shaped TM Dual-Mode Filter$hInstitute of Electrical and Electronics Engineers (IEEE) [Miek, Daniel] 4030 $nInstitute of Electrical and Electronics Engineers (IEEE) 4209 This paper presents a monolithic 3D-printed ceramic X-shaped dual-mode microwave filter. The filter is manufactured utilizing a lithography-based ceramic manufacturing (LCM) process, allowing the realization of the resonator as well as the housing in one single piece. Therefore, contact as well as alignment problems, usually arising between a ceramic in TM mode operation and a metallic enclosure, can conveniently be avoided. A fourth order dual-mode filter with a designed center frequency of 6 GHz and a bandwidth of 279 MHz is realized in alumina material. Practical design rules to be considered in the filter layout process as well as limitations imposed by the LCM approach are discussed. The outer surface of the ceramic cavity is subsequently metallized using a silver spray-coating. Advantageously, the metallization is only a few micrometers thick, wherefore the weight of the component can be reduced. The measurement results are compared to the simulation and reveal good agreement. A temperature stability measurement shows a center frequency downward shift of 0.22%. 4950 https://doi.org/10.1109/JMW.2022.3167250$xR$3Volltext$534 4950 https://nbn-resolving.org/urn:nbn:de:gbv:8:3-2024-00462-3$xR$3Volltext$534 4961 https://macau.uni-kiel.de/receive/macau_mods_00004747 5051 600 5051 621.3 5550 Buildings 5550 Ceramics 5550 Geometry 5550 Manufacturing 5550 Shape 5550 Temperature measurement 5550 Three-dimensional printing