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rfTlineLib sbend

dzakharian

Hello,

I'm modeling a PCB trace using rfTlineLib components, and wanted to clarify a couple things about "sbend" discontinuity in particular.

1. Documentation for this component in Cadence does not provide any indication re: how the angle is defined.  I found an older ADS sbend model here (https://edadocs.software.keysight.com/pages/viewpage.action?pageId=5906296), which states direction of angle for positive/negative numbers.  Can I assume it's same for the sbend in rfTlineLib?

2. Documentation also indicates that I should be able to specify negative angles, but every time I enter a negative number for the angle in the properties, it defaults immediately to 90deg... is this behavior expected?

Many thanks in advance,

David

  • Andrew Beckett

    David,

    This looks like an oversight in the rfTlineLib implementation. The underlying component in spectre seems to be limited to within -90 and 90, but both sbend and mbend have checks to limit the angle between 0 and 90.

    You should contact customer support to request that this is fixed.

    Regards,

    Andrew.

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