Electromagnetic band gap millimeter and sub-millimeter 3D resonators manufactured by ceramic stereolithography

Innovative resonant cavities based on 2D and 3D Electromagnetic Band Gap crystal properties are presented in this paper. Their geometrical sizes and shapes have been designed and optimized in order to obtain satisfying electrical performances concerning the resonant frequency and the unloaded Q factor. A particular attention has been paid to the Input/Ouput feeding of the structures. The EBG crystals have been designed, optimized and manufactured in one monolithic piece with zirconia or alumina materials. Two specific 3D ceramic stereolithography processes have been developed. Experimental structures have been manufactured and successfully tested compared to the theoretical results.