protecting a signal net

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samabraham

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Why we should connect a shield to reference potential ?? Is it reference potential of the aggressor or victim??
 

Victim. If you have guard traces around a net that are not connected to anything, you actually jus t make a bad antenna that will not do much. You want to make that guard as low impedance as possible so that radiated energy that hits is quickly funneled away.!
 

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