{"id":318735,"date":"2023-11-21T08:26:49","date_gmt":"2023-11-21T08:26:49","guid":{"rendered":"\/forum\/forums\/reply\/318735\/"},"modified":"2023-11-21T08:26:49","modified_gmt":"2023-11-21T08:26:49","slug":"318735","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/318735\/","title":{"rendered":"Reply To: Amplitude and phase In FDTD or MODE"},"content":{"rendered":"

<p>Hi Pengzheng,<\/p><p>Thank you for contacting us,<\/p><p>In FTDT you could introduce a mode expansion monitor (Using and understanding Mode Expansion Monitors<\/a>) and ports (Ports (FDTD) – Simulation Object<\/a>) at the positions of your interest for both the amplitude and the phase. From this point you can extract the phase, which is connected with S-parameters, as well as with field component and mode. So taking advantage of S-parameters of FTDT you can use angle script command ( angle – Script command<\/a>) to get the phase. The same case with S-parameters applies on EME solver by using ports.<br> <br>A simple example how you can use the S-parameters is quoted below:<br>SS=getresult(“FDTD::ports::port 2″,”S”);<br>S21=SS.S;<br>Phase=angle(S21);<br>?phase*180\/pi;   #in deg<br> <br>You could also get the phase by using a frequency-domain monitor (Frequency-domain Profile and Power monitor – Simulation object<\/a>) of an individual E component. However, special care should be taken as getting the phase from a frequency monitor it depends on the position on the monitor.<br> <br><span class=”ui-provider a b c d e f g h i j k l m n o p q r s t u v w x y z ab ac ae af ag ah ai aj ak” dir=”ltr”>I hope that was helpful, let me know if I can be of further assistance.<\/span><\/p><p>Kind Regards,<\/p><p>Niki<\/p><\/p>\n","protected":false},"template":"","class_list":["post-318735","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t