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RF or Wave optics frequency domain

Posted Jul 24, 2023, 1:57 p.m. EDT Electromagnetics, Studies & Solvers, Modeling Workflow Version 6.0 4 Replies

Li-Heng Chang
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Hi, everyone, I want to simulate nano-antenna with legnth as 200 nm at visible light range. Should I choosee RF module or wave optics frequency domain. Thanks in advance.

4 Replies Last Post Jul 25, 2023, 3:10 a.m. EDT
Edgar J. Kaiser Certified Consultant
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Posted: 1 year ago Jul 24, 2023, 3:07 p.m. EDT

Li-Heng,

Both application modules can in principle do that. They have many features in common but offer some different boundary conditions and material models. In wave optics you can realize very large models with 100s or 1000s of wavelengths. It depends on the details of your project which module fits better.

Cheers Edgar

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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Li-Heng, Both application modules can in principle do that. They have many features in common but offer some different boundary conditions and material models. In wave optics you can realize very large models with 100s or 1000s of wavelengths. It depends on the details of your project which module fits better. Cheers Edgar
Robert Koslover Certified Consultant
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Posted: 1 year ago Jul 24, 2023, 3:12 p.m. EDT
Updated: 1 year ago Jul 24, 2023, 3:14 p.m. EDT

Since your antenna size is only about half a wavelength in size, the RF module will certainly be applicable. I don't have the wave optics module, but I suspect that it can handle this physics regime also. However, the RF module would be my first choice. (Note: That's just my humble opinion; others may differ!)

Added: Looks like Edgar posted a response first. And OK, I agree with him.

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
Since your antenna size is only about half a wavelength in size, the RF module will certainly be applicable. I don't have the wave optics module, but I *suspect* that it can handle this physics regime also. However, the RF module would be *my* first choice. (Note: That's just my humble opinion; others may differ!) Added: Looks like Edgar posted a response first. And OK, I agree with him.
Jeff Hiller COMSOL Employee

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Posted: 1 year ago Jul 24, 2023, 3:45 p.m. EDT

This blog compares and contrasts the various electromagnetics-related modules, and this Specification Chart goes into the very nitty-gritty details of what's in each of those products.

Best,

Jeff

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Jeff Hiller
[This blog](https://www.comsol.com/blogs/computational-electromagnetics-modeling-which-module-to-use/) compares and contrasts the various electromagnetics-related modules, and this [Specification Chart](https://www.comsol.com/products/specifications/) goes into the very nitty-gritty details of what's in each of those products. Best, Jeff
Li-Heng Chang
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Posted: 1 year ago Jul 25, 2023, 3:10 a.m. EDT

Thanks for all of your replies~

Thanks for all of your replies~

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