Additive Manufacturing of Non-homogenous Dielectric Waveguide Structures and Filters

This paper investigates the use of 3D-printed alumina ceramics to achieve variable dielectric constants for novel microwave applications. An introduction to lithography-based ceramic manufacturing exhibits the novel process and material properties, while detailing printing techniques for achieving gradient and equivalent dielectric constants. Printed samples of non-homogeneous dielectrics are presented and briefly discussed. Potential end-use for microwave components are discussed with emphasis on future filter applications.