{"id":161760,"date":"2021-08-30T20:10:31","date_gmt":"2021-08-30T20:10:31","guid":{"rendered":"\/forum\/forums\/topic\/simulation-results-changing-with-size-of-radiation-box\/"},"modified":"2021-09-01T00:12:24","modified_gmt":"2021-09-01T00:12:24","slug":"simulation-results-changing-with-size-of-radiation-box","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/simulation-results-changing-with-size-of-radiation-box\/","title":{"rendered":"Simulation results changing with size of radiation box"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>I am simulating a narrow band antenna (0.5 % bandwidth) designed to work at 120 MHz. It is a monopole antenna. The simualted S-parameters (S11) showing the resonance changes by few MHz every time I increase the size of the radiation box. The radiation box is now multiple wavelengths away from the antenna and even then it is affecting the simulated S-parameters. Any solution to this problem?<\/p>\n","protected":false},"template":"","class_list":["post-161760","topic","type-topic","status-closed","hentry","topic-tag-radiation-box-narrow-band-antenna","topic-tag-vhf-antenna"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_old_reply_author_name_id":["Anonymous"],"_bbp_old_is_reply_anonymous_id":["false"],"_btv_view_count":["1259"],"_bbp_likes_count":["0"],"_bbpmt_movedon":["2022-07-01 16:54:38"],"_bbpmt_movedfrom":["151970"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["161760"],"_bbp_forum_id":["27793"],"_bbp_engagement":["28551","178124","223158"],"_bbp_voice_count":["3"],"_bbp_reply_count":["7"],"_bbp_last_reply_id":["190400"],"_bbp_last_active_id":["190400"],"_bbp_last_active_time":["2021-09-01 00:12:24"]},"test":"muhammadfahad-farooquiuoit-ca"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/161760","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\/161760\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=161760"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}