Broadband mmWave Filters using Dielectric Waveguide Bends

This contribution handles a novel, broadband, and non-periodical mmWave filter design. Basing on fundamental considerations for dielectric waveguides, reflectionless high- and low-pass filter designs are discussed. Theoretical and practical design steps, as well as three different exemplary filter structures are presented. The corresponding transfer functions are investigated in simulations and measurements and prove the discussed filter theory.