| style="width:250px;" | Almost omni-directional physical radiator
| style="width:250px;" | None, stand-alone source
|-
| style="width:30px;" | [[File:huyg_src_icon.png]]
| style="width:150px;" | [[Glossary of EM.Cube's Materials, Sources, Devices & Other Physical Object Types#Huygens Source | Huygens Source]]
| style="width:250px;" | Used for modeling equivalent sources imported from other [[EM.Cube]] modules
| style="width:250px;" | Imported from a Huygens surface data file
|}