The Modern Network Theory Approach to Microwave Filter Design

A review of the modern network theory approach to microwave filter design based on Richards´ transformation is given. Basic concepts are discussed, including the use of Kuroda´s identities and the specialized theory of optimum filter forms. Applications of the theory presented to elliptic-function filters, special rejectiontype filters, and multiplexers are given. Throughout the presentation, emphasis is placed on basic methods and techniques rather than on detailed design procedures.