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Rotating-Wave Electromagnetic

Posted 2020年5月4日 GMT-4 00:16 RF & Microwave Engineering 4 Replies

Fabian Barragan
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hi would I like to know if there is an example simulated a Rotating-Wave Electromagnetic?

Thank you.

4 Replies Last Post 2020年5月12日 GMT-4 23:57
Robert Koslover Certified Consultant
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Posted: 5 years ago 2020年5月5日 GMT-4 22:15

To clarify: by "rotating-wave electromagnetic," do you mean a circularly-polarized electromagnetic wave?

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
To clarify: by "rotating-wave electromagnetic," do you mean a circularly-polarized electromagnetic wave?
Fabian Barragan
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Posted: 5 years ago 2020年5月8日 GMT-4 00:21

yes circularly-polarized electromagnetic wave as is show in the figure.

Could I simulate a cylindrical cavity in 3d with two ports at the bottom of the cavity with this type of wave (figure)?

Thanks for the help.

yes circularly-polarized electromagnetic wave as is show in the figure. Could I simulate a cylindrical cavity in 3d with two ports at the bottom of the cavity with this type of wave (figure)? Thanks for the help.

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Robert Koslover Certified Consultant
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Posted: 5 years ago 2020年5月8日 GMT-4 14:38

I don't know if Comsol provides an example model. You could look though the RF-module library files. Regardless, you can launch user-defined waves via either ports with "user-defined" fields or with scattering BCs with user-defined fields. You'll have to enter the field expressions yourself. If you find it confusing, start with simpler expressions and watch how they behave in the model. Make sure you can launch plane waves, for example. (And bear in mind that a circularly polarized wave can be written as a superposition of two linearly polarized waves with the same k-vector, but with orthogonal E vectors, and where one of them lags the other by 90 deg in phase.

-------------------
Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
I don't know if Comsol provides an example model. You could look though the RF-module library files. Regardless, you can launch user-defined waves via either ports with "user-defined" fields or with scattering BCs with user-defined fields. You'll have to enter the field expressions yourself. If you find it confusing, start with simpler expressions and watch how they behave in the model. Make sure you can launch plane waves, for example. (And bear in mind that a circularly polarized wave can be written as a superposition of two linearly polarized waves with the same k-vector, but with orthogonal E vectors, and where one of them lags the other by 90 deg in phase.
Fabian Barragan
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Posted: 5 years ago 2020年5月12日 GMT-4 23:57

Thanks

Thanks

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