How-to get the electromagnetic scattered far field using Comsol RF Module
If you use Comsol Multiphysics – RF Module, you may have noticed that there is a far field option when you edit any Boundary settings. This feature will allow you to compute the scattered far field of an object using some tricks.
Initial Setting : Simple simulation using Comsol
This tutorial will allow you to compute the scattered field of an ideal magnetic conducting circle in 2D. First, let’s design a square with PML around to absorb the outgoing light. Create a problem using Plane TM waves (we will change this latter to scattered TM waves, but the tutorial was made for an initial TM problem, and not for Scattered TM). We will assume you know how to use Comsol as a beginner user, so you know how to design the following structure :
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