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  3. Modeling a transmission line using the mclin element

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Modeling a transmission line using the mclin element

velosat
velosat over 5 years ago

Hi

I am trying to model a transmission line with the mclin/nclin elelment from the rftline lib.  I first created the stackup and then reference the stackup element in the mclin instantiation.  My understanding is the tool creates a RLGC matrix for the stackup on a per length basis, and one needs to specify the length of the transmission line in the mclin properties.  When the xmission line is say 2 inches long, how should I go about it?  The obvious choice of just using one element with length = 2 inches, results in an unexpected change of impedance.  Is it better to then break it down into say 0.5 inch elements (length=0.5 inch) and then cascade four of them or should they be broken down into further small elements (say 10 elements -.2 inches long) ?  Please advise.

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  • Andrew Beckett
    Andrew Beckett over 5 years ago

    It's intended to be the entire length that you specify and it should not be necessary to break it into lumped chunks. If there's a problem with the accuracy, you should contact customer support (first make sure  you are using a current simulator version - not sure what you're using right now?)

    Andrew

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