EXPONENTIAL TRANSMISSION LINE 



569 



termination was accordingly removed to the exponential line, resulting 

 in the "Experimental Curve" at the top of Fig. 6. It agrees within 

 experimental error with the "Theoretical Curve." The slight vertical 

 displacement of the experimental curve at the higher frequencies is 

 attributed to deviations in the impedance of the pencil lead, which was 



Fig. 7 — Photograph of one of the changes In conductor size. 



used as a resistance standard, from a pure resistance equal to its direct 

 current value. 



To increase the power carrying capacity of the exponential line, one 

 was built with larger wire size at the lower impedance end. This 

 increased the breakdown voltage by increasing the spacing and con- 

 ductor diameter and at the same time increased the current carrying 

 capacity by decreasing the resistance and increasing the heat dissipat- 



