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International Journal of Antennas and Propagation
Volume 2012, Article ID 897074, 6 pages
http://dx.doi.org/10.1155/2012/897074
Research Article

High-Frequency Electromagnetic Field Coupling to Small Antennae in a Rectangular Resonator

Otto-von-Guericke-University Magdeburg, IGET, Universitätsplatz 2, D-39106 Magdeburg, Germany

Received 9 September 2011; Accepted 1 December 2011

Academic Editor: Dragan Poljak

Copyright © 2012 Sergey Tkachenko et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The integral-differential equation for the current of an electrically small antenna, inside a resonator, which is induced by given sources, is approximately solved by the so-called “Method of Small Antenna,” both for dipole and loop antennas. The current induced in the antenna is evaluated using the scattering characteristics of small antennas in free space and regularized Green’s function of resonator. As example of application of the theory, a transfer function (“external field→induced voltage”) for the coupling through aperture is calculated.