How to calculate Load impedance from S parameters in ADS 2009

Hello,

I' designed a rectenna circuit, but i have problem with the impedance matching circuit,
i dont know hoaw to calculate z load using ads 2009.

many thanks :)

If the load parameter is not shown during plot, then you can simply write the equation fro Impedance with S parameters and plot the variable that you use..!

If you're too lazy to enter the equation , you can also use ADS predefined function. Only change the s-paramters according to your port.