Dielectric Triple-Mode Filter Based on Additive Manufactured Zirconia Resonator

This paper presents the design, manufacturing, and electrical characterization of a dielectric triple-mode bandpass filter. The filter utilizes a triple-mode resonator based on the combination of a ring-shaped TE single-mode and a Y-shaped dual-mode dielectric resonator. For the realization of the resonator consisting of zircona, the cost-efficient Direct Ink Wrinting (DIW) approach is used. Simulations and practical measurements validate the design, showcasing the suitability of the approach to combine different basic resonator types for the realization of multi-mode structures.