How to model PLL Fractional N Syntesizer

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saw86

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Hello Everyone I try to model Fractional n pll with AWR Microwave Office my uestion is how can I model fractional n PLL synthesizer with AWR Schematic section not VSS ANyone know please help me

thanks in advance
 

not really I just want to model analog device's PLL in schematic section. I have s parameter result of it and is there any block define p1dB phase noise loop filter ,phase detector, frequency divider...I am just thinking it's possible or not

Mr. Muehlhaus
 

saw86 said:
is there any block define p1dB phase noise loop filter ,phase detector, frequency divider...I am just thinking it's possible or not
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These elements are in the "system blocks" palette, so I think you will need the VSS license to use them.

 

Ok thnaks for the info MR. Muehlhaus I will check on that
 

I recommend you to simulate your Fractional Synthesizer in Matlab Simulink.There are tons of scripts and modelling block in it..
 

Ok Bigboss I think I must try to figure out how to import matlab script into the awr mwo schematic

Thanks bigboss for the info
 

saw86 said:
Ok Bigboss I think I must try to figure out how to import matlab script into the awr mwo schematic

Thanks bigboss for the info
Click to expand...
You don't have to use MW Office ( of course you can use but not necessary )
You should "MatLab Simulink" to predict the characteristics of a Fractional PLL.Simulink is a Matlab tool and it's designed for system/behavioural/general purpose system simulations.
VSS has also very fine simulation design guide for PLLs, it's of course also used..
 

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