Indirect Galerkin-Bubnov Boundary
Element Analysis Of Coated Thin Wire
Antenna In Free Space
Author(s)
D. Poljak & C. A. Brebbia
Abstract
Dielectric coated wire antennas in free space are modelled via an efficient
Galerkin-Bubnov Boundary Element scheme. The formulation is based on the
Pocklington integro-differential equation for loaded wires with the dielectric
coating being taken into account by means of an equivalent magnetic coating
load term added to the equation.
Keywords: dielectric coated wire antennas, Pocklington integro-differential
equation, Galerkin-Bubnov Boundary Element Method.
1 Introduction
Dielectric coated antennas are often preferable over bare wires when used in
applications involving finitely conducting medium such as microwave
hyperthermia, geophysical exploration or subsurface communication. The use of
these antennas avoids the often undesirable contact between them and the
surrounding medium. Moreover, the radiation efficiency of the antenna can be
improved when using coatings [1].
One of the principal applications of coated antennas is in microwave
hyperthermia, i.e. the treatment of cancer by heating the malignant tissue. The
high temperature thus generated inside the tumor tissue has a cytotoxic effect,
and it is useful in both chemotherapy and radiation therapy.
This tissue heating must be localized to maintain the temperature within the
tumor tissue up to 43oC, for a given time period, while the neighbouring tissue
temperature level is far below 43oC [1]. The insulated antennas are inserted into
Keywords
dielectric coated wire antennas, Pocklington integro-differential
equation, Galerkin-Bubnov Boundary Element Method
Related Book
Other papers in this volume
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