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Design Languages >> Verilog-AMS >> Interpolation in Verilog-A
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Message started by Alok519 on Jun 18^th, 2008, 10:13pm

Title: Interpolation in Verilog-A
Post by Alok519 on Jun 18^th, 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

Title: Re: Interpolation in Verilog-A
Post by Alok519 on Jun 19^th, 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

Title: Re: Interpolation in Verilog-A
Post by Geoffrey_Coram on Jun 20^th, 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.

Title: Re: Interpolation in Verilog-A
Post by Alok519 on Jun 22^nd, 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...