Which mechanism causes differential RF signal attenuation in a twisted-pair cable at increased frequencies?

💡 Explanation

When radio frequency (RF) signals increase along a twisted pair cable, the skin effect causes current to flow closer to the conductor surface because of induced opposing eddy currents, increasing the effective resistance and signal attenuation. Therefore increased conductor resistance results, rather than absorption, capacitive coupling, or inductive reactance, whose effects are frequency-independent.

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