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PML monopole in dielectric, hfss

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bgood21

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dielectric hfss

Hello,
I am relatively new to ansoft. I can model a monopole in free space, but as soon as I put it within a dielectric I get reflection of the radiation condition. I used PML on each of the boundaries, but still do not get a isotopic pattern, does anyone have any idea what I could be doing wrong?

My pattern has most of the gain toward the corners of the box.
 

cd79

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If you added the dielectric after making the PML, this might be the problem.
Delete the PML-bc and the PML-Boxes from the design. Then set new PML-bc.
Or make a new model and assign the PML as the last step of drawing.
 

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