Whats the best CAD tool for RF circuit design?

hi,

Can any body tell me from his experiance, whts the best CAD tool for RF/MW circuit design and simulation.....

Karim

https://www.edaboard.com/viewtopic.php?p=707013#707013

ADS is the best one.

microwave office is a very good CAD tool .
and the ansoft designer.

Maybe agilent ADS

ADS is a little complex but it is the best

any link for free download of ADS please...

whats ADS?
I have worked a little bit on Serenade(by Ansoft) but i'av never found it interesting....