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Interpolation in Verilog-A (Read 923 times)
Alok519
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Interpolation in Verilog-A
Jun 18th, 2008, 10:13pm
 
I have designed a small signal model of pll, now the noise sources which is there , I im treating as transfer functions , but comming to real world now I need to interplate the noise transfer function from the noise text file .For that I need to read the noise file containing about 50 sets of sampled data and from there I need to interpolate the noise transfer function
can anyone suggest what should I do
thanks
regards
alok
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Alok519
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Re: Interpolation in Verilog-A
Reply #1 - Jun 19th, 2008, 11:25pm
 
Now , this is not required ,
I just need to import a nose file remember in phase domain the unit is db/hz vs hz.
the thing is the noise file which i m getting has values for db/hz in negative .
how should i add this noise file
please help
thanks
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Geoffrey_Coram
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Re: Interpolation in Verilog-A
Reply #2 - Jun 20th, 2008, 8:12am
 
Have you looked at the noise_table() function in Verilog-AMS?

You probably need to pre-process the data, though, to remove the negative values, and perhaps to convert the dB to non-dB power.
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Alok519
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Re: Interpolation in Verilog-A
Reply #3 - Jun 22nd, 2008, 4:50am
 
I have 50 sets of data , so noise table is not so effective \
however , problem is solved
spectre vpwlf solved ma problem ..it has the option to enter noise file ..just i need to do is to convert the db/hz data to v2/hz data and to perform noise analysis...
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