Designing an LNA in ADS and using Agilent MGA-72543 s2p file inserted into SnP. Ran initial simulation and received the following error message:
" Warning detected by hpeesofsim during circuit set up. Unable to resolve variable(s) or functions(s) in expression ` Zopt1=zopt(Sopt,PortZ1)' Sopt "
I attached my schematic, the error message and part of the s2p file.. This is my first time using Zopt and I am using Zopt to achieve the minimum noise figure. Does anyone know how I may alleviate this issue?