{"id":354410,"date":"2024-02-28T20:30:07","date_gmt":"2024-02-28T20:30:07","guid":{"rendered":"\/forum\/forums\/topic\/evanescent-mode-waveguide-simulation-in-hfss\/"},"modified":"2024-02-28T20:30:07","modified_gmt":"2024-02-28T20:30:07","slug":"evanescent-mode-waveguide-simulation-in-hfss","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/evanescent-mode-waveguide-simulation-in-hfss\/","title":{"rendered":"Evanescent Mode Waveguide Simulation in HFSS"},"content":{"rendered":"<p>What is the correct way of simulating a rectangular waveguide when the operating frequency range is right around the cutoff frequency of the TE10 mode?<\/p>\n<p>The operation of my design relies on the evanescent TE10 mode. However, since the wave impedance is purely imaginary and the wave is attenuating below the cutoff, what simulation setup should be used to provide reliable simulation results? More specifically, does deembedding still work for an evanescent waveguide of arbitrary length? Should I renormalize the port impedance to a real reference impedance?<\/p>\n","protected":false},"template":"","class_list":["post-354410","topic","type-topic","status-closed","hentry","topic-tag-waveguide-2","topic-tag-evanescentwave"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"What is the correct way of simulating a rectangular waveguide when the operating frequency range is right around the cutoff frequency of the TE10 mode?The operation of my design relies on the evanescent TE10 mode. 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