A Canonical Predistorted Filter Based on TM Mode Dielectric Resonator

The paper presents a 10-pole (10-4-4) canonical cross-coupled, pre-distorted filter realized using TM mode dielectric resonators. The filter offers significant size reduction compared to corresponding TE mode dielectric resonator based filter. The filter is capable of generating comparable electrical performance but at the cost of moderately-compromised Q. The canonical pre-distorted filtering function has been utilized to achieve the better electrical performance and TM mode dielectric resonator allows minimizing the size of the filter. The realized filter at S-Band yields a reduction of around 40% in size and footprint compared to a cylindrical DR based high Q filter for a similar requirement.