{"id":379750,"date":"2024-08-22T03:50:44","date_gmt":"2024-08-22T03:50:44","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/setting-up-cpw-hfss-simulation\/"},"modified":"2024-08-22T03:50:44","modified_gmt":"2024-08-22T03:50:44","slug":"setting-up-cpw-hfss-simulation","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/setting-up-cpw-hfss-simulation\/","title":{"rendered":"Setting up CPW HFSS Simulation"},"content":{"rendered":"<p>I am reaching out to see if I could get some guidance on setting up a coplanar waveguide simulation to extract S-parameters, propagation constant values, etc&#8230;<\/p>\n<p>The current setup consists of using modal network solution along with the excitation being wave ports (first picture posted). The simulation space is enclosed within an airbox with no boundary conditions.&nbsp;<\/p>\n<p>In the CPW example I have seen given by HFSS, perfect H boundaries are given to surfaces where the ports are as well as radiation boundaries for the airbox. Given that I am running the simulation as a modal network solution should I follow the same boundary conditions?<\/p>\n<p>I also have noticed that the port modes are slightly different as shown in the images I have uploaded. Is this okay?<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/22-08-2024-1724298613-Port2.png\" alt=\"\" width=\"591\" height=\"190\"><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/22-08-2024-1724298593-Port1.png\" alt=\"\" width=\"606\" height=\"237\"><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/22-08-2024-1724298259-CPW1.png\" alt=\"\" width=\"521\" height=\"416\"><\/p>\n","protected":false},"template":"","class_list":["post-379750","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["446053","109997"],"_bbp_author_ip":["2601:195:c502:d870:8cf1:f6ef:1769:bebf"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["4192"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["379750"],"_bbp_forum_id":["27793"],"_bbp_engagement":["109997","446053"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["380535"],"_bbp_last_active_id":["380535"],"_bbp_last_active_time":["2024-08-27 05:19:24"]},"test":"b354de186d0afd689c59a232c365b227bd01deef"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/379750","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/379750\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=379750"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}