Computer-Aided Design of Y-Junction Waveguide Diplexers

Waveguide diplexer designs are widely used for telecom- munications, space, and terrestrial applications. Although mathemat- ical models and design procedures for waveguide fllters are known, diplexer designs still remain complex and time consuming. This pa- per describes how to obtain an equivalent circuit network model and a complete design of non-contiguous diplexers using a computer-aided approach with a classic Y-junction. Results are satisfactory in terms of reduced design time and performance. Examples including physical dimensions are provided.