Miniaturized SIW Filters Based on Shielded Quarter-Mode Cavities

摘要

This paper presents a modified quarter-mode cavity in substrate integrated waveguide (SIW) technology, which combines miniaturized dimension and fairly good quality factor, and its application to the design of SIW cavity filters with improved performance. The modeling of the quarter-mode SIW cavity to get maximum quality factor and the design of a bandpass filter to minimize insertion loss are presented, along with the experimental verification of the proposed approach.