{"id":394425,"date":"2024-11-20T03:52:38","date_gmt":"2024-11-20T03:52:38","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/characteristics-mode-analysis-of-a-unit-cell\/"},"modified":"2024-11-20T03:52:38","modified_gmt":"2024-11-20T03:52:38","slug":"characteristics-mode-analysis-of-a-unit-cell","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/characteristics-mode-analysis-of-a-unit-cell\/","title":{"rendered":"Characteristics Mode Analysis of a unit cell"},"content":{"rendered":"<p>&lt;p&gt;Hi everyone,&lt;\/p&gt;&lt;p&gt;I need help with a characteristic mode analysis (CMA) of my unit cell.&lt;\/p&gt;&lt;p&gt;I&#8217;m trying to conduct a CMA on my unit cell, but in the CMA solution type in HFSS, I&#8217;m unable to assign a boundary condition and Floquet port to the air box surrounding the unit cell. As a result, each time I attempt to run the simulation, I encounter an error message that states, &#8220;CMA requires a boundary and excitation.&#8221;&lt;\/p&gt;&lt;p&gt;Could someone please guide me on how to assign the appropriate boundary and excitation to the unit cell in this situation?&lt;\/p&gt;&lt;p&gt;Thank you!&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/20-11-2024-1732073941-unit cell and error message.png\" alt=\"\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-394425","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi everyone,I need help with a characteristic mode analysis (CMA) of my unit cell.I&#039;m trying to conduct a CMA on my unit cell, but in the CMA solution type in HFSS, I&#039;m unable to assign a boundary condition and Floquet port to the air box surrounding the unit cell. As a result, each time I\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/characteristics-mode-analysis-of-a-unit-cell\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Characteristics Mode Analysis of a unit cell | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi everyone,I need help with a characteristic mode analysis (CMA) of my unit cell.I&#039;m trying to conduct a CMA on my unit cell, but in the CMA solution type in HFSS, I&#039;m unable to assign a boundary condition and Floquet port to the air box surrounding the unit cell. 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