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Electric Field Amplitude for Eigenfrequencies
Posted 10 août 2022, 16:15 UTC−4 Electromagnetics Version 5.6 1 Reply
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Hello all,
I've begun using COMSOL recently and had a question about the electric field from solving for eigenfrequencies. I was solving a simple cylindrical cavity to familiarize myself with COMSOL for a more complex problem, and noticed that I could get the values for the electric field components for the solved eigenfrequencies. What I don't understand is where the values for the electric field are derived from in this case, I haven't seen anything like an amplitude for an electric field that would be applied to give the values throughout the cavity for each given eigenfrequency.
Thanks for your time.
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If you multiply an eigenfunction by a constant, the result is still an eigenfunction of the system. The scaling is arbitrary.
Comsol offers three options for scaling of the eigenfunctions, selected under Eigenvalue Solver > Settings > Output > Scaling of Eigenvectors.