What happens as the frequency of a signal in coaxial cable is increased?
The characteristic impedance decreases
The loss decreases
The characteristic impedance increases
The loss increases✓Ճիշտ պատասխան
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Coaxial loss comes mainly from conductor resistance, which rises with frequency because skin effect confines current to a thinner surface layer, and from dielectric losses that also rise with frequency. The characteristic impedance is set by the cable's geometry and stays essentially constant.