Dear Sir/Madam
I'm using virtuoso ic618hf with spectre 191hf.
I'm trying to simulate the input admittance of a open-loaded loss-less transmission line (using mtline from analogLib with the RLGC form ).
Due to my perfonal application, I need to check its admittance at both postive/negative frequency using PSP (e.g. +20GHz and -20GHz).
When I used Harmonic Balance engine for PSS, the results of PSP at postive & negative frequency are indeed conjugate. However, when I use shooting engine. the admittance at both positive and negative frequency are the same (both real and imaginary part).
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Since there are some square-wave LOs in my circuit, shooting should be much faster and more accurate if this problem can be solved.
Any comment is welcomed.
Best regards,
Yang
