[SI-LIST] Re: Why shielded twisted-pair is still twisted?
- From: steve weir <weirsi@xxxxxxxxxx>
- To: Neo <neoflash2008@xxxxxxxxx>
- Date: Mon, 10 May 2010 15:53:28 -0700
STP is not twin ax. STP do not have individual shields. Twisting makes
the parasitics more isotropic.
Steve
Neo wrote:
> Hi,
> I'm thinking about why shielded twisted-pair is still twisted?
> Pair is twisted for controlled distance/impedance (due to twist) and for
> x-talk reduction. If a pair is already shielded together, it is not necessary
> to twist them any more.
> Without twist, it will be equivalent to twin-ax cable, isn't that better?
> Thanks,Neo
>
>
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Steve Weir
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