Electromagnetic properties of an insulated dipole antenna immersed in an arbitrary medium

Author

Ghods, A.H. ; Rahmat-Samii, Y.

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

Volume

138

Issue

6

fYear

1991

fDate

12/1/1991 12:00:00 AM

Firstpage

497

Lastpage

503

Abstract

Radiation characteristics of an insulated dipole antenna immersed in an arbitrary medium are studied using a complete formulation of the problem. Electric and magnetic equivalent surface currents are used to formulate a system of integro-differential equations. These equations are solved using the method of moments construction with of basis functions. The data obtained are found to be in good agreement with the available data in the literature. The effect of the insulator´s permittivity on the near field and far field of the dipole is discussed. The use of coating materials to control the effective length of the dipole is presented. The effect of the insulator´s thickness on the far field is also studied. The input impedance or the insulated antenna in arbitrary medium is obtained

Keywords

antenna radiation patterns; antenna theory; dipole antennas; electric impedance; integro-differential equations; arbitrary medium; basis functions; coating materials; electric equivalent surface currents; electromagnetic properties; far field; input impedance; insulated dipole antenna; integro-differential equations; magnetic equivalent surface currents; method of moments; near field; permittivity effect; radiation characteristics; thickness effect;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings H

Publisher

iet

ISSN

0950-107X

Type

jour

Filename

108989