Might be worth adding here that the _characteristic_ impedance doesn't change with length because it's the impedance of an infinite length of cable. At least, that's how I understand it... I've been wrong before:)
As I recall, co-ax is interesting because its input impedance is fixed whatever the length?
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Might be worth adding here that the _characteristic_ impedance doesn't change with length because it's the impedance of an infinite length of cable. At least, that's how I understand it... I've been wrong before :)
As I recall, co-ax is interesting because its input impedance is fixed whatever the length?