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Surface currents and charges on an electrically thick and long conducting tube in E ‐ and H ‐polarized, normally incident, plane‐wave fields
Author(s) -
Burton R. W.,
King R. W. P.,
Blejer D. J.
Publication year - 1978
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs013i001p00075
Subject(s) - transverse plane , radius , physics , cylinder , axial symmetry , plane (geometry) , optics , current density , plane wave , surface (topology) , atomic physics , charge density , excited state , geometry , quantum mechanics , mathematics , computer security , structural engineering , computer science , engineering
Recent work on the theoretical and experimental determination of the distributions of surface currents and charges induced on an electrically thick tubular cylinder with the resonant electrical half‐length kh = 1.5π by an E ‐polarized field is extended to electrically quite long tubes excited by both E ‐ and H ‐polarized plane‐wave fields. A simple approximate analytical representation of the currents and charges is described in terms of forced and resonant transverse Fourier components for cylinders with lengths not restricted to those that are axially resonant. Extensive theoretical and measured graphs and contour diagrams of the distributions of current and charge density are displayed and compared specifically for tubes with the electrical radius ka = 1 and lengths up to kh = 3.5π.