A Galerkin moment method for the analysis of an insulated antenna in a dissipative dielectric medium

Author

Atlamazoglou, Prodromos E. ; Uzunoglu, Nikolaos K.

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece

Volume

46

Issue

7

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

988

Lastpage

996

Abstract

A Galerkin moment method is employed to solve the problem of a dielectric-coated dipole antenna in a dissipative medium. Piecewise sinusoids are used as basis and testing functions. The dielectric coating is modeled by equivalent-volume polarization currents, which are simply related to the conduction current distribution. No additional unknowns are introduced, and the size of the moment-method matrix is the same as that for bare antennas. Exact and approximate formulas for the near electric field are derived. The computed results exhibit excellent agreement with those previously published for a symmetric, as well as an asymmetric insulated dipole. Compared to its existing competitors, the new method appears to be more general and computationally efficient

Keywords

Galerkin method; antenna theory; current distribution; method of moments; microwave antennas; piecewise-linear techniques; Galerkin moment method; computationally efficient method; conduction current distribution; dissipative dielectric medium; equivalent-volume polarization currents; insulated antenna; moment-method matrix; near electric field; piecewise sinusoids; Cancer; Dielectrics and electrical insulation; Dipole antennas; Heating; Hyperthermia; Microwave antennas; Moment methods; Neoplasms; Temperature; Testing;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.701454

Filename

701454