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Home Transmission Lines Input Impedance of Any Short- Circuited Line
 
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Input Impedance of Any Short-Circuited Line

The driving-point, or input, impedance of any such line or cable can be found by letting Z, of equation 58 be zero, or by the following method. No voltage can exist across a short circuit, and thus, for the short-circuited condition, Er = 0 in equations 23 and 24. It follows that

and

The sending-end impedance of a short-circuited line will then be

since

and, by equation 35,

Equation 64

can also be written

because, from equation 50, the characteristic impedance


Home Transmission Lines Input Impedance of Any Short- Circuited Line

Last Update: 2011-05-18