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The biconical antenna in a radially stratified medium

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1 Author(s)
Fikioris, J.G. ; Avco Corp., Wilmington, MA, USA

The theory of a transmitting biconical antenna in a radially and continuously stratified medium is developed; its input impedance is computed and plotted vs. its length for various media and cone angles. The medium extends to infinity and is characterized by a complex dielectric factorxi=epsilon-isigma/omega=epsilon_{0}f(r), whereris the radial distance from the center of the antenna. For the "stratification function" the formf(r)= (kr+a)/(kr+b)is considered, whereaandbare constant parameters, in general complex. The plots clearly exhibit all effects of dissipation and stratification expected on physical grounds and observed experimentally for dipole antennas.

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Antennas and Propagation, IEEE Transactions on  (Volume:13 ,  Issue: 2 )