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September 2023

Filters With Linear Frequency-Dependent Couplings: Matrix Synthesis and Applications

by Ping Zhao and Ke Wu

Abstract: Filters are one of the most fundamental and indispensable components in wireless systems for various communications (5G/6G), radar sensing, and electromagnetic (EM) imaging applications. The development of a quality filter usually involves a substantial amount of design, modeling, and optimization procedures commensurate with its electrical performance and physical realization based on selected high-frequency building blocks, such as resonators and coupling sections over a specific frequency range of interest.