ADS for RF, Hspice & Spectre for IF ... ?

Quite a lot of company using ADS for RF circuit simulation and either Hspice or Spectre for IF circuit simulation. Why not use ADS for RF circuit, as well as IF circuit, since ADS has a Time Domain (Spice) simulator also?

A lot of engineers don't have much confidence in ADS's timedomain simulation. If you trust Agilent, and you think they provide good algorithms for both HB and transient, then you can use ADS for your IF circuits.

Though, ADS's HB is very powerful, fast with acceptable accuracy if you are handy with it.

i agree

the HB simulator of agilent is very powerfull , but the transient simualtor is slow
about the accuracy , i used it and it is good
specially there is a convultion in it , to use frequecy dependent element in it


khouly

I think it is difficult to design model for @DS' transient simualtor ............

Why?

In fact doing transient simulation and then to use FFT is a very good way in spectre.
The results are very very close with HB.
Think that way...