wimax pll

Hello guys,,,

Could you help me please,,,

I want to design pll for mobile wimax application,,,

could u give me step by step instruction how to design this. tutorial and/ or papers would be preferable.

And i've searching for logic gate and D fli-flop component in ADS, but i've found nothing.
can't we simulate dpll in ADs? coz i need logic gate and DFF for my design.

Thanks,

PS: I'm still new with ADs and sorry for my bad english,,