SRD frequency multiplier simulation use ADS

Hi all,

I want to design a 1GHz×5 SRD frequency multiplier use Agilent ADS.
For a fresh guy, I don't know which simulation should I use (Harmonic Balance or Transient?) and which diode is better for my design? (ma44769 or HSMP3822? Somebody suggest 3822 for it's cheaper)
What's more, the diode model is needed. Someone gave an address in this forum, but unfortunately it had been deleted, would you pls send the model to my mail box: towzid@163.com?
Thanks
Your help is appreciated!