Implementation of rigorous EM simulations for design and production of narrow band waveguide diplexer

In this article the advanced modeling and simulation of narrow band waveguide diplexer for radio-relay links at 13 GHz is presented. Three different electromagnetic simulation packages were used for design of diplexer with 0.76% of fractional bandwidth and 2% of channel spacing. Simulation tools are compared concerning their accuracy in the prediction of central frequency, bandwidth, insertion and return losses and out of band attenuation. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1032–1036, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23277