#### Max077

##### Newbie level 5

I want to design a matching circuit using ADS for RF energy harvester between antenna and rectifier.

The antenna impedance is 50 ohms. How can I calculate the impedance of the rectifier circuit?

I would like to use the smithchart for matching but I am stuck in rectifier`s impedance.

I have read it can be calculated through HB analysis but I am not cleat how exactly I can?

Thank you.