Help needed for varactor diode biasing

[nabeel71]

I am working on a reconfigurable decoupling and matching network. To make it reconfigurable i need to use varactor diodes ,which will help me tune uptmy network from uplink to downlink frequencies. I need to know how can i model and achieve biasing of these varactor diodes. Using skyworks 2019-2023 hyper abrupt varactor diodes.

 

[kripacharya]

which modeling system are you using ? Skyworks has the spice parameters on their website

 

[nabeel71]

Yeah u r right they have the spice parameters , I am using ADS. That's the problem. I am confused where to start and what to do.

 

[nabeel71]

Thank you for sharing the link , can u kindly guide me how should i start designing my circuit. I mean from where i should begin. I just want to replace the capacitors in my schematic with these diodes.
I also need to find a way to add the biasing circuit to my layout

 

[rodgerwxh]

If you only need two values from the varactor to tune your uplink and downlink frequencies. Then a switch can be used to control the level of reverse voltage applied on the varactor. I can not provide further help without seeing your circuit.

 

[nabeel71]

I am attatching image of my network and the values for inductor and capacitors for downlink.