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/* Defining an Excitation Source */
In each of [[EM.Cube]]'s computational modules, you need to choose the right source type depending on the purpose of your simulation and based on the observables you define for your project. For example, for computing the radar cross section (RCS) of a target, you need a plane wave source. If you are interested in computing the S/Z/Y parameters of your structure, then you have to choose a source type like a gap or lumped source that supports a "Port Definition" observable. For a detailed description of each source type in the context of its application, please refer to the manual of individual computational modules.
[[Image:Info_icon.png|30px]] Click here to access '''[[Glossary of EM.Cube's Materials, Sources, Devices & Other Physical Object Types]]'''.
== Exciting Multiport Structures Using Linear Superposition ==
