Does the height of my infinite substrate effect the results?

Yolanda Gonzalez
Yolanda Gonzalez Altair Community Member
edited March 12 in Community Q&A

Hello, 

I am trying to simulate a spiral antenna. I have simulated other antennas before and have been using the same method to get the results that I am looking for. However, with this spiral antenna I am having some difficulties. 

The substrate of the antenna has a thickness of 14 um. When I construct the infinite substrate and add the thickness, it shows it as being much thicker. For reference I have put a picture of the previous antenna I was working on that has the same measurements for the substrate. 

imageimage 

                                          Spiral Antenna                                                                                                Previous Antenna 

For the Frequency I have it set as Linearly Spaced Discrete Points with a start frequency of 1 GHz and an end frequency of 3 GHz. It is set to calculate a number of 100 frequencies with 20.202 MHZ increments. For the port of the spiral antenna, I have created an edge port that is slightly above the substrate (shown below). 

image

When I tried to run the FEKO Solver I got this error message.

ERROR 36628: The triangles of a metal surface are not all located in the same medium

Does the edge port have anything to do with this message? If so, how can I fix it?

And how does the thickness of my infinite substrate effect the outcome of my results?

Thanks, 

Yolanda Gonzalez 

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Answers

  • Shannon_Mistry
    Shannon_Mistry
    Altair Employee
    edited March 12

    Hi @Yolanda Gonzalez ,

    The substrate thickness seems to be more than 14um from the image. Can you please attach the model here?

    Regards,

    Shannon Mistry

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