Gap problem in KingMiddleton secondorder theory for dipole admittance calculations
Abstract
It is noted that the admittance of a dipole in the KingMiddleton theory is obtained by solving Hallen's integral for the current in the form of a series of continuous functions obtained by the iteration of a suitable Nthorder approximation. King et al. (1966) found that whereas the conductance converges to a stable value at the secondorder approximation, the susceptance diverges with increasing order. The empirically determined susceptance values of the knifeedge capacitance given by King et al. are found to be reliable for thin dipoles but not for thicker ones. The reason for this imperfection is ascertained, and a table giving the corrected values is presented.
 Publication:

Electronics Letters
 Pub Date:
 April 1984
 DOI:
 10.1049/el:19840231
 Bibcode:
 1984ElL....20..340L
 Keywords:

 Capacitance;
 Cylindrical Antennas;
 Dipole Antennas;
 Electrical Impedance;
 Delta Function;
 Extrapolation;
 Gaps;
 Resonant Frequencies;
 Communications and Radar