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1 dB compression point cannot be get when using montecarlo in ADE XL

Went

Hello all

I am now simulating a PA, and want to find how seriously the PA is influenced by process variations. I run pss to find it's 1 dB

 compression point in ADE L. And when I using montecarlo in ADE XL to find the performance variation, I can not get the result of the expression.

Since the expression is checked in ADE L, it should be correct. I checked the log file, pss simulation is executed, But there is no scalar output. can

anyone give me some advice? 

Thanks 

Went

Parents

  • Went,

    Which version of the IC tools are you using (what does Help->About show - please give the full sub-version number)? Also, which simulator version are you using (from the spectre log file).

    Please show the expression. you're using too.

    Thanks,

    Andrew.

Reply

  • Went,

    Which version of the IC tools are you using (what does Help->About show - please give the full sub-version number)? Also, which simulator version are you using (from the spectre log file).

    Please show the expression. you're using too.

    Thanks,

    Andrew.

Children
  • in reply to Andrew Beckett

    Andrew

    Thanks. The version of IC is IC6.1.7-64b.500.2, the version of spectre is 18.1.0.077, and the expression is [ compressionVRI((v("/net027" ?result "pss_fd") - 0.0) '1 ?rport resultParam("PORT1:r" ?result "pss_fd") ?gcomp 1) ]. The expression is enclosed by square brackets.

    Went

  • in reply to Went

    Took some time to narrow down (sorry, I didn't have time to play with this before). It's an issue with the spectre version you're using. If you use a slightly later hot fix of 18.1 18.1.0.287.isr4 then it works.

    I wasn't able to find a workaround with the spectre version you have - but switching spectre versions to something more recent should be relatively painless.

    Andrew.

  • in reply to Andrew Beckett

    Hi Andrew

    Thanks for your reply. I escaped from this problem for some days. I will try to update my spectre to find if this problem is solved.

    thank you

    wen

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