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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


and the attenuation is


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

Last Update: 2011-03-19