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How to Graph VSWR vs Frequency

Hello all,

I am designing a Yagi type antenna and would like to create a graph to represent the VSWR of the antenna across multiple operating frequencies. The graph I would like to create would look very similar to the one I have pictured here. I do not know where to begin with this, so I am asking for help. Thanks.

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Feko

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Madelé

As a starting point, you can take a look at the examples in the Feko Example Guide. There is an example of an LPDA antenna and also of a Yagi Uda antenna. In CADFEKO, create the model and set the frequency range. Run the model. In POSTFEKO, add the source data to a Cartesian graph and change the Quantity to VSWR.

I hope that helps. If not, feel free to ask further questions!

GGAMPALA

VSWR is a standard output available under the "Source Data". So, once you run the Feko model, you can go to POSTFEKO, add an empty Cartezian graph, plot the source data for the voltage source and change the quantity from 'reflection coefficient' to 'VSWR'.

Mel

The Getting Started Guide, part of your installation, section 3.4, patch on an infinite substrate will detail the steps how to plot the source data. Then, as Gopinath has indicated, just change the drop-down box to VSWR.

E.g.

Community-Pasted-Attachment-1611948079601.png