{"id":251693,"date":"2023-02-27T13:44:46","date_gmt":"2023-02-27T13:44:46","guid":{"rendered":"\/forum\/forums\/topic\/dipole-simulation-with-hfss\/"},"modified":"2023-02-27T13:44:46","modified_gmt":"2023-02-27T13:44:46","slug":"dipole-simulation-with-hfss","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/dipole-simulation-with-hfss\/","title":{"rendered":"Dipole simulation with HFSS"},"content":{"rendered":"<p>Dear all,<\/p>\n<p>I noticed that if we put the dipole (Hertzian-dipole excitation) close to the ground and <span style=\"font-family: \u7b49\u7ebf\">I<\/span> measured the E-field at one point far from the dipole, the simulated E-field is different from the one I obtained by using image method.<\/p>\n<p>Specifically, I did the following HFSS simulations and I noticed some differences<\/p>\n<p>Working frequency: 200 MHz. E-field observation point <span>&nbsp;<\/span>P1: (0, 0, 400) mm<\/p>\n<p>Working space: free-space with a XY perfect conductor (PEC) plane at z = 0 mm.<\/p>\n<p>HFSS case #1: One dipole in a free-space space with a XY perfect conductor (PEC) plane at z = 0 mm.<\/p>\n<p>Dipole information: +y E Hertzian dipole, L=50 mm, Radius: 5 mm, location (0, 0, 30) mm (30 mm above the PEC plane.<\/p>\n<p>HFSS case #2 (image method): Two dipoles in a free-space space.<\/p>\n<p><span lang=\"FR\">Dipole information : <\/span><\/p>\n<p style=\"margin-left: 36.0pt;text-indent: -18.0pt\"><!-- [if !supportLists]--><span lang=\"FR\"><span>1.<span style=\"font: 7.0pt 'Times New Roman'\">&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><\/span><!--[endif]--><span lang=\"FR\">+y E Hertzian dipole, L=50 mm, Radius: 5 mm, location (0, 0, 30) mm. <\/span><\/p>\n<p style=\"margin-left: 36.0pt;text-indent: -18.0pt\"><!-- [if !supportLists]--><span lang=\"FR\"><span>2.<span style=\"font: 7.0pt 'Times New Roman'\">&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><\/span><!--[endif]--><span lang=\"FR\">-y E Hertzian dipole, L=50 mm, Radius: 5 mm, location (0, 0, -30) mm<\/span><\/p>\n<p style=\"margin-left: 36.0pt;text-indent: -18.0pt\">&nbsp;<\/p>\n<p style=\"margin-left: 36.0pt;text-indent: -18.0pt\"><span lang=\"FR\">It is observed that the total E-field at P1 generated in case #1 and #2 are difference.&nbsp;<\/span><\/p>\n<p style=\"margin-left: 36.0pt;text-indent: -18.0pt\">&nbsp;<\/p>\n<p style=\"margin-left: 36.0pt;text-indent: -18.0pt\"><span lang=\"FR\">My questions is:<\/span><\/p>\n<p style=\"margin-left: 36.0pt;text-indent: -18.0pt\"><!-- [if !supportLists]--><span>1.<span style=\"font: 7.0pt 'Times New Roman'\">&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><!--[endif]-->Why the differences are observed in Case #1 and Case #2 when the same setting is considered (same working space, same setting for analysis, etc.)<\/p>\n","protected":false},"template":"","class_list":["post-251693","topic","type-topic","status-closed","hentry","topic-tag-dipole","topic-tag-hfss"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["27063","28551"],"_bbp_author_ip":["23.220.96.181"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1406"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["251693"],"_bbp_forum_id":["27793"],"_bbp_engagement":["27063","28551"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["310815"],"_bbp_last_active_id":["310815"],"_bbp_last_active_time":["2023-10-10 11:41:16"]},"test":"xinglong-wupolimi-it"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/251693","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\/251693\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=251693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}