{"id":372094,"date":"2024-07-16T12:33:22","date_gmt":"2024-07-16T12:33:22","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/?post_type=topic&#038;p=372094"},"modified":"2024-07-16T12:33:22","modified_gmt":"2024-07-16T12:33:22","slug":"far-field-amp-grating-projections-in-fdtd-vs-fft","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/far-field-amp-grating-projections-in-fdtd-vs-fft\/","title":{"rendered":"Far field &amp; Grating Projections in FDTD vs FFT"},"content":{"rendered":"<p>Hi, I have the following question:<\/p>\n<p>How do the &#8220;farfield&#8221; and &#8220;grating&#8221; in FDTD differ, in their calculations, from simply applying a FFT on a monitor&#8217;s field? Are there other calculations happening in these functions?<\/p>\n","protected":false},"template":"","class_list":["post-372094","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":["132.66.50.98"],"_bbp_subscription":["38587","2592"],"_btv_view_count":["120"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["372094"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2592","38587"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["372191"],"_bbp_last_active_id":["372191"],"_bbp_last_active_time":["2024-07-16 17:49:55"]},"test":"saarpmail-tau-ac-il"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/372094","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":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/372094\/revisions"}],"predecessor-version":[{"id":372096,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/372094\/revisions\/372096"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=372094"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}