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The Designer's Guide Community Forum › Modeling › Behavioral Models › Modelling of frequency-dependent resistor (ferrit choke)
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Modelling of frequency-dependent resistor (ferrit choke) (Read 5051 times)
Berti
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Modelling of frequency-dependent resistor (ferrit choke)
Jan 05th, 2009, 11:43pm  
Hi,

I need to model a frequency-dependent resistor (phase should be relatively constant) - basically a ferrit choke. How can I do that in spectre/veriloga? A combination of R-L-C elements doesn't work since this doesn't result in a constant phase?

Any ideas?

Regards
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ACWWong
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Re: Modelling of frequency-dependent resistor (ferrit choke)
Reply #1 - Jan 6th, 2009, 12:55am  
Maybe this piece on skin effect (resistance varying with sqrt(freq) in this case) will help ?
http://www.designers-guide.org/Modeling/ind.pdf
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Berti
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Re: Modelling of frequency-dependent resistor (ferrit choke)
Reply #2 - Jan 6th, 2009, 6:49am  
Cool, thanks a lot! That's what I was looking for.

Cheers
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