Abstract

There have been increasing demands for advanced RF/Microwave filters other than conventional Chebyshev filters in order to meet stringent requirements from RF/Microwave systems, particularly from wireless communications systems. In this paper, we will analysis the cascaded quadruplet (CQ) filters by an iterative method based on the wave concept, combined with the module of the approach multi-scale. The novelty of this method consists in substituting selected coarse meshes by their equivalent surface impedances. This approach offers high spatial resolution with low computing resources. The results are presented and analyzed to demonstrate its efficiency.

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