How to simulate S11 in HSpice ?

i want to konw too

if you simulate it in Hspice ,then you can use ADS to get the S11,i think

This method is for any SPICE:

http://eesof.tm.agilent.com/docs/icc...Spice2Spar.pdf

I use HSPICE within Microwave Office so it's all automatic, but the above method should work. It si described in detail by "Introduction to Microwave Circuits" by Robert Weber.