{"id":387782,"date":"2024-10-02T08:51:46","date_gmt":"2024-10-02T08:51:46","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/siwave-thermal-modifier\/"},"modified":"2024-10-02T08:51:46","modified_gmt":"2024-10-02T08:51:46","slug":"siwave-thermal-modifier","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/siwave-thermal-modifier\/","title":{"rendered":"SIwave thermal modifier"},"content":{"rendered":"<p>&lt;p data-pm-slice=&#8221;1 1 []&#8221;&gt;Hi, I&#8217;m trying to observe the variation in S-parameters with temperature. To account for temperature changes, I added thermal modifier equations for relative permittivity and dielectric loss tangent, but the results aren&rsquo;t linear. I think the equations might be incorrect. I would like to know the correct thermal modifier equations for dielectrics like FR-4 and PTFE, thank you.&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/02-10-2024-1727858113-mceclip0.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-387782","topic","type-topic","status-publish","hentry","topic-tag-AnsysSiwave-1"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi, I&#039;m trying to observe the variation in S-parameters with temperature. To account for temperature changes, I added thermal modifier equations for relative permittivity and dielectric loss tangent, but the results aren\u2019t linear. I think the equations might be incorrect. I would like to know the correct thermal modifier equations for dielectrics\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/siwave-thermal-modifier\/\" \/>\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=\"SIwave thermal modifier | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi, I&#039;m trying to observe the variation in S-parameters with temperature. To account for temperature changes, I added thermal modifier equations for relative permittivity and dielectric loss tangent, but the results aren\u2019t linear. I think the equations might be incorrect. 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To account for temperature changes, I added thermal modifier equations for relative permittivity and dielectric loss tangent, but the results aren\u2019t linear. I think the equations might be incorrect. I would like to know the correct thermal modifier equations for dielectrics\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/02-10-2024-1727858113-mceclip0.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/siwave-thermal-modifier\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/AnsysSiwave-1\\\/#listItem\",\"name\":\"Ansys-Siwave\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/AnsysSiwave-1\\\/#listItem\",\"position\":3,\"name\":\"Ansys-Siwave\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/AnsysSiwave-1\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/siwave-thermal-modifier\\\/#listItem\",\"name\":\"SIwave thermal modifier\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/siwave-thermal-modifier\\\/#listItem\",\"position\":4,\"name\":\"SIwave thermal modifier\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/AnsysSiwave-1\\\/#listItem\",\"name\":\"Ansys-Siwave\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/siwave-thermal-modifier\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/siwave-thermal-modifier\\\/\",\"name\":\"SIwave thermal modifier | Ansys Learning Forum\",\"description\":\"Hi, I'm trying to observe the variation in S-parameters with temperature. 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