Spurious Suppression of Ceramic loaded filter with different Ceramic Permittivity

Abstract

This work presents the 3rd order ceramic waveguide filters with improved stopband performance. The idea utilizes ceramic loaded resonators with different permittivity’s and TEM loading. The overall response spreads out the higher order resonances by integrating the effects of different 𝜀𝑟 and TEM without affecting the overall performance of a filter. The simulated results of a 3rd order ceramic loaded waveguide filter is presented, which is in good agreement with the idea.