Numerical and Experimental Impedance Analyses of a Thin-Wire Antenna in the Presence of a High-Permittivity 3D Dielectric Body

Author

Saeedfar, Amin ; Sato, Hiroyasu ; Sawaya, Kunio

Author_Institution

Dept. of Electr. & Commun. Eng., Tohoku Univ.

fYear

2006

fDate

9-14 July 2006

Firstpage

4057

Lastpage

4060

Abstract

Numerical and experimental analyses of dipole impedance in the presence of 3D dielectric body was carried out. For the numerical computations, the mixed-domain method-of-moments (MoM) using polynomial expansion and finite-difference time-domain (FDTD) method were applied. Accuracy of the previously proposed MoM for high-permittivity material was substantiated by comparison between the numerical solutions of FDTD and also by comparing the numerical results with some experimental data. It was observed that in low temperature case, when the water has higher permittivity and conductivity indexes, numerical results of MoM have better agreement with experimental data than that of FDTD results. This happens in the case of very small distance between antenna and scatterer, too. More improvement of proposed MoM is required and under investigation

Keywords

dielectric bodies; dipole antennas; electromagnetic fields; finite difference time-domain analysis; method of moments; permittivity; polynomials; wire antennas; FDTD method; MoM; dipole impedance; finite-difference time-domain method; high-permittivity 3D dielectric body; impedance analyses; mixed-domain method-of-moments; polynomial expansion; thin-wire antenna; Conducting materials; Dielectric materials; Dipole antennas; Finite difference methods; Impedance; Moment methods; Permittivity; Polynomials; Temperature; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium 2006, IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

1-4244-0123-2

Type

conf

DOI

10.1109/APS.2006.1711518

Filename

1711518