Design of a broadband finline filter

Abstract

The design and optimization of low insertion loss finline filters is described in this paper. Finline filter with a large pass band has been designed using equivalent circuit approach. Mode matching method has been used for the analysis of discontinuities in the filter. The performance of the filter obtained through this method is further optimized to achieve improved pass band and stop-band performance. A practical Quasi-Newton algorithm has been used for this purpose.