The Designer's Guide Community Forum - Transmission line model for twisted pair cable/backplane

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Transmission line model for twisted pair cable/backplane (Read 1486 times)

Vaibhav New Member Offline Posts: 3 Mumbai	Transmission line model for twisted pair cable/backplane Jun 03^rd, 2009, 5:41am Dear all, I need a transmission line model for twisted pair cable or a backplane trace (differential) for typical lengths, which i can use to simultate with my designed I/O transmitter circuit (4 Gbps). Any help/guidance is appreciated. Thanking You Vaibhav
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neoflash

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Mixed-Signal
Designer

Posts: 269

Re: Transmission line model for twisted pair cable/backplane
Reply #1 - Feb 3^rd, 2010, 2:09pm

try this:

.model tyco_backplane W modeltype=RLGC N=2
+ Lo= 3.628107780173747e-007 3.623569811203107e-008 3.632197082161472e-007
+ Co= 1.339425591351141e-010 -1.344737615837475e-011 1.339533359535629e-010
+ Ro= 1.98840709666684 0.07953628386667692 1.988407096666994
+ Rs= 0.000343881684307448 1.471739178249039e-005 0.0002855352823410895
+ Gd= 1.686031415906164e-011 -1.691861448335916e-012 1.684572301092438e-011

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