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Current and Voltage Distributions on Lossless Lines

A summary of the current and voltage distributions for a line 5/4*λ long is made in Fig. 8. For the lossless line the maximum values or antinodes are twice the magnitude that would exist if there were no reflection, and the minimum values or nodes reach zero. If the line is some length other than 5/4*λ, the pattern of the voltage or current distribution can be found from Fig. 9.

Figure 8. Current and voltage relations on open- and short-circuited lossless lines. These are not initial and reflected waves. They are the (e) curves of Figs. 6 and 7. They are plots of the effective values of voltages and currents at various points along the line. Sending end at left, and receiving end at right.

Figure 9. Current and voltage distributions and input impedances, for open-circuited and short-circuited lossless lines of several lengths. Sending end at left, and receiving end at right.


Home Transmission Lines Current and Voltage Distributions on Lossless Lines

Last Update: 2011-05-30