Ports are used to order and index sources for circuit parameter calculations like S/Y/Z parameters. In EM.Tempo, you can define ports at the location of the following types of sources:
*'''[[Glossary of EM.Cube's Excitation Sources#Lumped Source |Lumped sources]]'''*'''[[Glossary of EM.Cube's Excitation Sources#Distributed Source |Distributed sources]]'''*'''[[Glossary of EM.Cube's Excitation Sources#Microstrip Port |Microstrip port sources]]''' *'''[[Glossary of EM.Cube's Excitation Sources#Coplanar Waveguide (CPW) Port |CPW port sources]]'''*'''[[Glossary of EM.Cube's Excitation Sources#Coaxial Port |Coaxial port sources]]''' *'''[[Glossary of EM.Cube's Excitation Sources#Waveguide Port |Waveguide port sources]]'''
Every time you create a new source with one of the above types, the program asks if you want to initiate a new port and associate it with the newly created source. If the physical structure of your project workspace has N sources, then N default ports are defined, with one port assigned to each source according to their order in the navigation tree. You can define any number of ports equal to or less than the total number of sources in your project.