I want to do behavior simulation for PLL. I got a model at simulink demos as the attchment. would you have a look? how to do the PM simulation by this model? If it can not do it, what kind of simulink model for PLL can do the PM simulation? would you help me? thank you
Well, to start with, do you have that simulink model running without modulation? Once you to, why don't you look through Dean Banerjee's PLL book (@ National Semiconductor's website) to figure out how to do phase modulation in a PLL. Once you have a working PLL model in Simulink and know how you phase modulate a PLL then you are practically finished.
Hi All,
I am in the same design phase than gavin168. If you are familiar with all pll parameters and mathematical expression you can determine coeficients of the filter, vco ....You have only to change the provided expression of the component in the matlab demo.
Well, there are a couple of way's to introduce phase modulation into the loop, and they interact with the loop filter design. There is a section in Dean's book that covers this, look for two port modulation