Radiation fields of the spherical slot antenna in a material medium

Authors

DOI:

https://doi.org/10.1109/ICATT.2015.7136857

Keywords:

electromagnetic fields, narrow slot, perfectly conducting sphere, rectangular waveguide

Abstract

The problem of electromagnetic waves radiation into a space outside a perfectly conducting sphere through a narrow slot, cut in an end-wall of a semi-infinite rectangular waveguide, excited by a fundamental wave of H10 type is solved using a rigorous self-consistent formulation. The starting point for the analysis is the one-dimensional integral equation for the equivalent magnetic current in the slot, obtained by using the effective thickness of the slot. The asymptotic solution of the equation was found by the generalized method of induced magnetomotive forces (MMF). The expressions for electromagnetic field components of the spherical slot antenna in a material medium were derived.

References

KING, R.W.P.; SMITH, G.S. Antennas in Matter. MIT Press, 1981.

KIKUCHI, M. Recent progress of electromagnetic techniques in hyperthermia treatment. IEICE Trans. Commun., v.E78-B, n.6, p.799-808.

VORST, A.V.; ROSEN, A.; KOTSUKA, Y. RF/Microwave Interaction with Biological Tissues. Willey-IEEE Press, 2006.

NESTERENKO, M.V.; KATRICH, V.A.; PENKIN, Y.M.; BERDNIK, S.L. Analytical and Hybrid Methods in Theory of Slot-Hole Coupling of Electrodynamic Volumes. Springer Science+Business Media, 2008, doi: http://dx.doi.org/10.1007/978-0-387-76362-0.

GARB, H.L.; LEVINSON, I.B.; FRIDBERG, P.S. Effect of wall thickness in slot problems of electrodynamics. Radio Eng. Electron Phys., 1968, v.13, p.1888-1896.

BERDNIK, S.L.; PENKIN, Y.M.; KATRICH, V.A.; NESTERENKO, M.V.; KIJKO, V.I. Electromagnetic Waves Radiation into the Space over a Sphere by a Slot in the End-wall of a Semi-infinite Rectangular Waveguide. Progress In Electromagnetics Research B, 2013, v.46, p.139-158, doi: http://dx.doi.org/10.2528/PIERB12102203.

BERDNIK, S.L.; KATRICH, V.A.; PENKIN, Y.M.; NESTERENKO, M.V.; PSHENICHNAYA, S.V. Energy Characteristics of a Slot Cut in an Impedance End-wall of a Rectangular Waveguide and Radiating into the Space over a Perfectly Conducting Sphere. Progress In Electromagnetics Research M, 2014, v.34, p.89-97, doi: http://dx.doi.org/10.2528/PIERM13112006.

Published

2015-04-25

Issue

Section

Low-gain and communication antennas, printed antennas