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LSSP simulation using OCEAN scripts

Alex Vasjanov

 Hello,

I'm trying to simulate large signal S-parameters (LSSP) in Cadence 6.15 and cannot seem to generate a working OCEAN script from the ADE. I get a warning that no results are available for LSSP calculations:

 WARNING(OCN-6038: results sweephblssp2_fd-sweep are not available...

Tried adding a  ocnWriteLsspToFile command but nothing changed...

I tried to use this code (everything is the result of ADE generating the script except the ocnWriteLsspToFile command. Doesn't work with and without it):

...

 analysis('hb ?oversample list("1")  ?fundfreqs list("f_rf")  ?maxharms list("3") ?errpreset "moderate"  ?param "Vin"  ?start "-20"  ?stop "10" ?sweepStep "1"  )
run()

ocnWriteLsspToFile("lssp.sp2" "/RF_in" "/PORT0/PLUS" "/RF_out" "/PORT1/PLUS" ?format "spectre" ?datafmt "realimag" ?port1 50 ?port2 40 ?result1 "sweeplssp1_lssp1_fd-sweep" ?result2 "sweeplssp2_lssp2_fd-sweep")

mag\(S11\) = db20(mag((((harmonic(v("/RF_in" ?result "sweephblssp1_hblssp1_fd-sweep") 1) + (harmonic(i("/PORT0/PLUS" ?result "sweephblssp1_hblssp1_fd-sweep") 1) * 50)) * sqrt(((50 * 1.0) / 50))) / (harmonic(v("/RF_in" ?result "sweephblssp1_hblssp1_fd-sweep") 1) - (harmonic(i("/PORT0/PLUS" ?result "sweephblssp1_hblssp1_fd-sweep") 1) * 50)))))
    
mag\(S22\) = db20(mag((((harmonic(v("/RF_out" ?result "sweephblssp2_hblssp2_fd-sweep") 1) + (harmonic(i("/PORT1/PLUS" ?result "sweephblssp2_hblssp2_fd-sweep") 1) * 40)) * sqrt(((40 * 1.0) / 40))) / (harmonic(v("/RF_out" ?result "sweephblssp2_hblssp2_fd-sweep") 1) - (harmonic(i("/PORT1/PLUS" ?result "sweephblssp2_hblssp2_fd-sweep") 1) * 40)))))

phase\(S21\) = phase((((harmonic(v("/RF_out" ?result "sweephblssp1_hblssp1_fd-sweep") 1) + (harmonic(i("/PORT1/PLUS" ?result "sweephblssp1_hblssp1_fd-sweep") 1) * 40)) * sqrt(((50 * 1.0) / 40))) / (harmonic(v("/RF_in" ?result "sweephblssp1_hblssp1_fd-sweep") 1) - (harmonic(i("/PORT0/PLUS" ?result "sweephblssp1_hblssp1_fd-sweep") 1) * 50))))

mag\(S21\) = db20(mag((((harmonic(v("/RF_out" ?result "sweephblssp1_hblssp1_fd-sweep") 1) + (harmonic(i("/PORT1/PLUS" ?result "sweephblssp1_hblssp1_fd-sweep") 1) * 40)) * sqrt(((50 * 1.0) / 40))) / (harmonic(v("/RF_in" ?result "sweephblssp1_hblssp1_fd-sweep") 1) - (harmonic(i("/PORT0/PLUS" ?result "sweephblssp1_hblssp1_fd-sweep") 1) * 50)))))

 Any clue on how to correctly set up LSSP analysis in OCEAN?

I assume that declaring a HB simulation is not enough (but the initial script is generated by ADE), though the LSSP simulation was configured using RF->LSSP wizard. No additional info found on this topic in Ocean Reference document.

Regards,

Aleksandr

  • Aleksandr,

    Sounds like a bug. That said, LSSP has had a bit of an overhaul in MMSIM13.1 and IC616 - so might be worth trying that first.

    But otherwise, please report to customer support.

    Kind Regards,

    Andrew.

  • in reply to Andrew Beckett

    I've also a similar problem:

    WARNING (OCN-6038): Results dc are not available for /home... Use results() for a list of available results.

    After using, dc appears among the results() so I do not understand why they aren't available

    results()
    (dcOp dcOpInfo dc model instance
    output designParamVals primitives subckts variables
    )

    Regards,
    Victor.

  • in reply to Victor Camacho

    Victor,

    Please read the forum guidelines. In particular:

    1. This is an 8-year old post - the forum guidelines ask you not to post on the end of old threads
    2. Given that the results() don't contain any RF analyses, it seems unlikely that you were trying to to use large-signal s-parameters (LSSP). The LSSP doesn't need dc results, so that's another reason why this seems unlikely to be related
    3. You didn't say which tool versions you're using
    4. You didn't give any indication of what exactly you were doing - how you were trying to read the results from your script.

    Regards,

    Andrew

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