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Electric field propagation through waveguide window

Posted 28 mai 2015, 06:42 UTC−4 RF & Microwave Engineering Version 5.1 2 Replies

Krupali
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Hello everyone,

I am studying effect of fused silica window inserted into circular waveguide. I have modeled it using 2D axial symmtery and simulate for TE01 mode at 140GHz frequency. I have attached two images 1. efield propagation without window 2. efield propagation with window.

Can anyone tell me why number of wavelengths are decreased inside window?
2 Replies Last Post 1 juin 2015, 03:41 UTC−4
Robert Koslover Certified Consultant
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Posted: 9 years ago 30 mai 2015, 15:34 UTC−4
The wavelength [not the "number of wavelengths"] is indeed decreased inside the window, because the phase velocity of the wave inside the window is less than outside it. And that follows from the fact that the window material has an index of refraction that is greater than elsewhere in your model.
The wavelength [not the "number of wavelengths"] is indeed decreased inside the window, because the phase velocity of the wave inside the window is less than outside it. And that follows from the fact that the window material has an index of refraction that is greater than elsewhere in your model.
Krupali
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Posted: 9 years ago 1 juin 2015, 03:41 UTC−4
Thank you sir for your reply...It helps me a lot...
Thank you sir for your reply...It helps me a lot...

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