CAD of evanescent-mode bandpass filters based on the short ridged waveguide sections
The paper presents the internal details of a developed fuIl-wave algorithm for the computer-aided design of evanescent-mode bandpass filters formed by single- or double-short ridged waveguide sections. New filter configurations with an enlarged cross section of filter housing and nonconventional notch-strip-notch elements providing improved stopband performance are given special considerations. Additional input-output transformers built on rectangular waveguide sections are used in designing broadband filters. Characteristics of one of the designed filters are verified by measured data. (C) 2001 John Wiley & Sons, Inc.
cad ridged waveguide evanescent-mode filter