Output power in an electromagnetic waveguide completely open in the middle.

Jose David Mosquera Ojeda

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I am buiding a electromagnetic waveguide with two horns and two rectangular ports (port 1 is the input power with a value of 0.01W) with impedance boundary condition and perfectly matched layers. The major purpose is to know what is theoutput power in the port 2 in Watt units.

I think that it is:

Output power=(abs(emw.S21)^2) * (Input power)

But I do not know if this is correct.

Please refer to the attached image for more geometry details. I would appreciate your help.

Thank you!



1 Reply Last Post 2024年3月7日 GMT+1 00:21
Robert Koslover Certified Consultant

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Posted: 6 months ago 2024年3月7日 GMT+1 00:21
Updated: 6 months ago 2024年3月7日 GMT+1 00:40

Hmm. This willprobablywork if you don't have errors in your model (you didn't post your .mph file, so I can't be sure since I can't see all your other settings). Note that you could simply plotemw.S21dBin post-processing. 0dB means all (100%) the power gets thru, while -3dB means ~half the power (10^-0.3) gets thru, etc. You might want to take a look at emw.S11dB too, to get an idea of how much reflection occurs. Also, I presume you are using the impedance boundary conditions on the waveguide horns (to represent their finite conductivities), andnotthe ports.

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Scientific Applications & Research Associates (SARA) Inc.
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Hmm. This will *probably* work if you don't have errors in your model (you didn't post your .mph file, so I can't be sure since I can't see all your other settings). Note that you could simply plot *emw.S21dB* in post-processing. 0dB means all (100%) the power gets thru, while -3dB means ~half the power (10^-0.3) gets thru, etc. You might want to take a look at emw.S11dB too, to get an idea of how much reflection occurs. Also, I presume you are using the impedance boundary conditions on the waveguide horns (to represent their finite conductivities), and *not* the ports.

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