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Home Radio-frequency Transmission Lines Useful Transmission-line Configurations Two Wire Unbalanced Feeder, Both Wires in Parallel
 
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Two-wire Unbalanced Feeder, with Both Wires in Parallel

Author: Edmund A. Laport

Fig. 4.2
This configuration (Fig. 4.2) has lower characteristic impedance than type I, and therefore its attenuation will be higher owing to ground conduction losses. In this case the characteristic impedance is

page_351_400-56.png

and the attenuation is

page_351_400-57.png

Typical construction values are:

p (inches) h (inches) a (inches) Z0 (ohms)
0.5 120 10 350
0.10 120 10 329
0.10 120 20 308

Home Radio-frequency Transmission Lines Useful Transmission-line Configurations Two Wire Unbalanced Feeder, Both Wires in Parallel

Last Update: 2011-03-19