RF Limiter Simulation in ADS

[wwshr87]

I'm trying to simulate a single stage RF limiter in ADS using the PIN_diode model. I have attached the topology that shows up on the PIN diode (CLA4601) limiter schematic. I would expect that as the input power increases at some power level it will start limiting. However, I'm always getting Pout=Pin.
I suspect the PIN diode is not self biasing as it should. If I use a DC bias on the diode it will limit the output power as expect. If someone can explain what concept I'm missing here.

Thanks!

 

[pancho_hideboo]

You have to do large signal analysis not small signal analysis.

 

[wwshr87]

Thank you for the suggestion. I used large signal analysis (LSSP) and RF Limiter is working as expected.

 

[pancho_hideboo]

I used large signal analysis (LSSP)

LSSP is not appropriate.

Use 1-Tone-HB Analysis.

 

[wwshr87]

Do you have a reference I can read that explains the different simulations in ADS and when to use them? I bought the book "RF and Microwave Circuit Design: Updated and Revised with 100 Keysight (ADS) Workspaces", I think that would be a good reference. Also, any good books about RF design in general.

Thanks!

 

[pancho_hideboo]

Do you have a reference I can read that explains the different simulations in ADS and when to use them?

Simply read documentations of ADS which are provided by Keysight.
That’s all.

https://www.edaboard.com/showthread.php?354542#6