microstrip port

Rahul_P1
Rahul_P1
Altair Employee
edited September 2021 in Community Q&A

Denise said:

We are using CADFEKO in our engineering courses at UFABC, for electromagnetic simulation of microstrip circuits.

So far, we have used “edge ports” for accessing the microstrip.

 

I would like to receive an application example file on how to use the “microstrip port” (rather than the “edge ports”).

Is it possible to connect the microstrip port, considering a substrate of finite height?

 

I would be very grateful if you could help us on this matter.

 

Thank you very much.

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Answers

  • Mel
    Mel Altair Community Member
    edited November 2020

    Attached a simple 50 Ohm microstrip line example.

     

    I have created two configurations. One is an S-parameter configuration (note FEKO automatically adds the S-parameter loads at both ports internally)

    Second is a standard configuration where a voltage source is on port 1 and a 50 Ohm load on Port 2.
    The POSTFEKO session (double click the .pfs file) shows the S-parameter S11 and the Reflection coefficient on separate graphs.

    Unable to find an attachment - read this blog

  • Abhishek K M
    Abhishek K M Altair Community Member
    edited September 2021

    Okay so microstrip port should always be added in pairs and at the opposite ends of a feedline ?

  • Mel
    Mel Altair Community Member
    edited September 2021
    Abhishek K M said:

    Okay so microstrip port should always be added in pairs and at the opposite ends of a feedline ?

    The example that was attached is a simple two port microstrip. This could be, for example, a microstrip filter which would have an input and output port.

    If the microstrip was feeding a microstrip patch antenna, there will be only 1 port.

    image

  • Abhishek K M
    Abhishek K M Altair Community Member
    edited September 2021

    Understood, thanks. 

    I have been trying to add microstrip port to patch for CMA to plot Modal Excitation Coefficient but it is not working for some reason.

    I have asked in forum over here

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