If we see "spectre -h port", we can see followings.
Quote:The reactance part of the impedance is ignored when the port is used in time-domain analyses.
56 x=0 Ohm Reference reactance, ignored for time domain analyses.
If Spectre ignore reactance in HB and Tran analysis, amplitudes of all nodes must be 1.0Volt.
But Spectre gives 2.0Volt.
This is the reason why starter of this thread, Dipankar observed 4 times voltage when port is open loaded.
I think at least there are three issues about reactance implementation of analogLib/port in Cadence Spectre.
(1) Generated amplitude is not appropriate even in AC analysis.
(2) Reactance is not ignored for HB and time domain analyses. And generated amplitude is not appropriate.
(3) Unless "freq" variable is not available, there is no valuable application for complex impedance even in AC analysis.
Quote:I know there are many people who use complex impedance in Agilent ADSsim.
But I doubt whether there is any people who use reactance of analogLib/port in Cadence Spectre actually since it is not implemented appropriately and its applications are very limited.