EMA3D Shielding Effectiveness of a Box Demo (2/6): Plane Wave Source Definition
In this section, we will add our HEARF plane wave source to the model. Follow the steps below to complete the setup:
- Navigate to Excitations and click on Plane Wave.
- Observe the series of directional arrows that appear.
- To understand these arrows, go to the Properties Panel, expand General, and select Show Names:
- The black arrow represents the propagation vector K pointing upward.
- The blue arrow indicates the electric field polarization vector.
- The yellow arrow signifies the magnetic field polarization vector.
- Expand the Orientation section in the Properties Panel to define propagation and polarization angles:
- Set Propagation Theta to 90 degrees.
- Set Polarization Phi to 270 degrees.
- Set Polarization Theta to 90 degrees.
- Set Polarization Phi to 0 degrees.
- Now, the propagation vector is pointing down toward the aperture.
- Click on the green checkmark to confirm the settings.
In the simulation tree, you will see the plane wave listed under Plane Wave. This is associated with a Gaussian pulse, which is automatically configured by the software to match the lowest and highest frequencies of interest.
To verify, open the plane wave and select FFT. You will see that the signal is located between the lowest and highest frequencies of interest.
With these steps, we have successfully completed the setup of the plane wave.
After setting up the domain, we're going to add our HEARF plane wave source to the model. To do that, let's go under Excitations and click on Plane Wave. Now, you can see that a series of directional arrows appears.
To see what they mean, let's go to the Properties panel, expand General, and select Show Names.
So, we have the black arrow, which is the propagation vector K, pointing upward, and we have the blue and yellow arrows, which are the electric field polarization vector and the magnetic field polarization vector.
Now, let's expand in the Properties panel Orientation and define our propagation and polarization angles. Let's set Propagation Theta to 90 degrees, Polarization Phi to 270 degrees, Polarization Theta to 90 degrees, and Polarization Phi to 0 degrees.
So now, our propagation vector is pointing down toward the aperture. Once this is done, let's click on the green checkmark to set it. Here in the simulation tree, we can see this plane wave under the Plane Wave. This is associated with a Gaussian pulse.
This Gaussian is automatically set by the software to match the lowest and highest frequencies. So, if we open it and select FFT, we'll see that the signal is located between the lowest and highest frequencies of interest. And now, we have completed setting up the plane wave.
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