CAD of Dual-Mode Elliptic Filters Exploiting Segmentation

Dual-mode filters are important for the design of satellite communication systems. In such electronic systems, where small size and light weight are highly critical, elliptic filters are thus far the best choice owing to their lowest-order among other filter configurations. In this paper, we present a new computer aided design (CAD) approach for the design of dual-mode elliptic filters in Ku-band. The proposed knowledge-based approach combines equivalent circuits, electromagnetic (EM) concepts, an EM solver, and the segmentation method into a unified framework. In the design phase, elliptic integral and an equivalent circuit model are used to determine filter geometry. By applying the segmentation concept, efficient simulation-based tuning of the filter is carried out in the tuning phase. The proposed approach is illustrated via design of a 14.5GHz filter