{"id":360097,"date":"2024-04-02T17:00:16","date_gmt":"2024-04-02T17:00:16","guid":{"rendered":"\/forum\/forums\/reply\/360097\/"},"modified":"2024-04-02T17:03:34","modified_gmt":"2024-04-02T17:03:34","slug":"360097","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/360097\/","title":{"rendered":"Reply To: Transmission values are very low during s parameter extraction"},"content":{"rendered":"<p>&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;It is just a warning, meaning some of the S parameters are not reciprocal, most likely due to numerical errors. You can either modify FDTD settings with finer mesh\/long simulation time with smaller auto shutoff min\/increase PML thickness or number of layers etc. Or you can also ignore it because such error can be minimized later if you do converging test. Also, make sure the port\/monitor collects the mode power correctly, with sufficient size but not pick up some scattering power, if any.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-360097","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"It is just a warning, meaning some of the S parameters are not reciprocal, most likely due to numerical errors. You can either modify FDTD settings with finer mesh\/long simulation time with smaller auto shutoff min\/increase PML thickness or number of layers etc. Or you can also ignore it because such error can be minimized\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/360097\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: Transmission values are very low during s parameter extraction | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"It is just a warning, meaning some of the S parameters are not reciprocal, most likely due to numerical errors. 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