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Need a transformer with adjustable primary/secondary/mutual inductance and coupling factor

StillLearning
Hello everyone,Could someone provide me with instructions on how to create a transformer with adjustable primary/secondary/mutual inductance and coupling factor in Cadence?Currently, there is "xfmr" in Analoglib; however, I can only specify the number of turns for the primary and secondary. There is also another parameter in the properties of xfmr that I am not familiar; it is titled: "Multiplier." Does anyone know what this "Multiplier" is?Thank you very much in advance for your attention and comment.Best,

Still Learning

  • same question from side also. Can anyone suggest a solution for this.

  • The xfmr corresponds to spectre's ideal transformer (see "spectre -h transformer" for more details). You can simply specify the number of windings on each side. The multiplier is a common parameter to all components in spectre, and means that you can place that number in parallel (probably little point in this case).

    If you want a non-ideal transformer, you could either use the approach described in "spectre -h transformer" or build one out of the winding and core components (see "spectre -h winding" and "spectre -h core" - these are available in analogLib too), or use a VerilogA model of a transformer.

    In addition, there is this paper you might find useful. The same site has downloadable copies of the models associated with the paper. 

    Regards,

    Andrew

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