On the Impedance of a Radiating Circuit
Chaney, Jesse Gerald
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In applying the formula for the driving point impedance of a radiating electric circuit, as given by the generalized circuit method, it is ^ found that additional terms must be. included. These terms are required to account for the negative spatial rate of change at which the reactive Power is being returned into the wire from the localized principal wave, retardation being neglected. In the case of a biconical antenna, it is demonstrated that these terms are cancelled by choosing a proper procedure of integration. However, these terms must be retained in the case of a radiating transmission line. The radiation impedance of a parallel wire line is given and is uniformly distributed along the line. The added attenuation due to radiation losses is considered in the determination of the driving Point impedance of the line. The latter procedure is applicable to a terminated rhombic antenna provided due c ognizance is taken of the non-uniformity of the line.
NPS Report NumberTechnical Report No. 9
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