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Plane wave in RF module

Posted Apr 10, 2012, 11:05 a.m. EDT RF & Microwave Engineering Version 3.5a 3 Replies

Carl Pfendner
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I have been trying for a while to produce a plane wave using a custom transient waveform using the RF module with no success.

I have gone back to try to reproduce the 3-D gaussian beam example file to try to learn how to do it with no success. The downloaded file does not run successfully when I try to solve the system and I am not sure which changes to make.

How do you set up a transient RF plane-wave with custom waveform?
3 Replies Last Post Dec 27, 2012, 3:01 a.m. EST
Robert Koslover Certified Consultant
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Posted: 1 decade ago Apr 10, 2012, 11:14 p.m. EDT
This is relatively straightforward (if I understand your question correctly). I've attached a very simple example with a 3D transient plane wave of a propagating Gaussian-enveloped (in time) sinusoidal pulse. Note that I specified the pulse as a background field, using the transient version of the EM wave formulation. I hope this helps you.
This is relatively straightforward (if I understand your question correctly). I've attached a very simple example with a 3D transient plane wave of a propagating Gaussian-enveloped (in time) sinusoidal pulse. Note that I specified the pulse as a background field, using the transient version of the EM wave formulation. I hope this helps you.

Attachments:

Carl Pfendner
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Posted: 1 decade ago Apr 11, 2012, 11:02 a.m. EDT
This is perfect. Thank you so much. I now have to try to get our custom waveform into the framework but this is exactly the sort of thing on which I was looking for some advice. Mainly my next problem is that the waveform type I want to put in is not an equation but a waveform input as a series of points as a customized shape. I don't think it should be too hard to get another waveform in the equation but I'll let you know how it goes.

Thanks again!
Carl
This is perfect. Thank you so much. I now have to try to get our custom waveform into the framework but this is exactly the sort of thing on which I was looking for some advice. Mainly my next problem is that the waveform type I want to put in is not an equation but a waveform input as a series of points as a customized shape. I don't think it should be too hard to get another waveform in the equation but I'll let you know how it goes. Thanks again! Carl
Yaonan Zhong
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Posted: 1 decade ago Dec 27, 2012, 3:01 a.m. EST
Hi, Robert,

I have met a similar problem in comsol3.5a. I would like to set up a gaussian-modulated sinusoidal plane wave, which will propagate through a 2-D grating. Could you help me with this? Thank you!
Hi, Robert, I have met a similar problem in comsol3.5a. I would like to set up a gaussian-modulated sinusoidal plane wave, which will propagate through a 2-D grating. Could you help me with this? Thank you!

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