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Definition of "Port" as a boundary condition

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I want to understand the definition of "Port" as a boundary condition in RF module.
Typical problem for setting Ports are shown in attached files (plasmonic_wire_grating.mph and plasmonic_wire_gratingMod.mph). Difference between these two files is only "Port". But results of transmission and reflection is quite different. What is the reason of this difference?

In my expectation, ports as a boundary condition determine the direction of poynting vector.


0 Replies Last Post 25 dic 2013, 06:07 GMT-5
COMSOL Moderator

Hello Akihiro Isozaki

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