Radiation characteristics of a coaxial waveguide with eccentric inner conductor for application in hyperthermia and microwave reflex therapy

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Herschmann, R.; B̈chel, O.: Radiation characteristics of a coaxial waveguide with eccentric inner conductor for application in hyperthermia and microwave reflex therapy. In: Advances in Radio Science 5 (2007), S. 189-195. DOI: https://doi.org/10.5194/ars-5-189-2007

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Sum total of downloads: 73




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This paper examines the radiation characteristics of a contact emitter conceived for application in hyperthermia and microwave reflex therapy. It is important to analyse the distribution of power density in the near field area, as the radiator's therapeutic sphere of activity is localized here. The contact emitter is a coaxial radiator with an eccentric course of the inner conductor. According to Huygens principle, a theoretical view of the near field radiation characteristics is made by determining the equivalent current densities in the emitter aperture. It is shown that by an eccentric shift of the inner conductor, an almost isotropic near field radiation pattern and power density can be achieved. For this, the electromagnetic field in the emitter aperture is determined by using a Bipolar coordinate system. This calculation considers only the fundamental TEM mode of the contact emitter. Besides the theoretical results near and far fields are simulated using the programme system Ansoft HFSS.
License of this version: CC BY-NC-SA 2.5 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2007
Appears in Collections:Fakultät für Elektrotechnik und Informatik

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pos. country downloads
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1 image of flag of Germany Germany 55 75.34%
2 image of flag of Brazil Brazil 7 9.59%
3 image of flag of United States United States 4 5.48%
4 image of flag of Canada Canada 2 2.74%
5 image of flag of Latvia Latvia 1 1.37%
6 image of flag of Korea, Republic of Korea, Republic of 1 1.37%
7 image of flag of Japan Japan 1 1.37%
8 image of flag of Hungary Hungary 1 1.37%
9 image of flag of Belarus Belarus 1 1.37%

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