Accession Number:

ADP013907

Title:

Reflective Properties of Grid Structures with Dielectric Coating

Descriptive Note:

Conference paper

Corporate Author:

BELARUSSIAN STATE UNIV MINSK DEPT OF RADIOPHYSICS

Report Date:

2002-09-01

Pagination or Media Count:

3.0

Abstract:

The based on the solution of an integral equation method for calculating electrodynamic characteristics of a half-wave dipole located above the grid screen with dielectric coating is considered in the article. The acquired analysis results allow to estimate the influence of geometric parameters of the screen and dielectric parameters on radiation characteristics. Grid screens are widely used in antenna techniques. They are used in various devices for electromagnetic protection as reflectors of minor and dipole antennas as screens of passive retranslation. Depending on the function of antenna system application of a grid screen allows to solve such problems as mass reduction wind impact reduction etc. While exploiting these systems quite possible is the formation of different kinds of thin coating, ice for instance that can be approximated to an ideal dielectric. That is the practical importance of the research work concerned with modeling of electrodynamic properties of grid structures. Usually the reflective properties of grid screens are considered using the results of solving the task of a plane electromagnetic wave incident on the grid of infinite dimensions 1. But in practice we deal with systems of finite dimensions. The purpose of this work is to model the radiation characteristics of half-wave dipole located above the grid screen covered with dielectric and to determine the dependence of these characteristics on dielectric permittivity and dielectric layer thickness. The solution of this task was found within the limits of thin-wire approximation using an integral equation which is an analogue of Pocklingtons equation for thin ideal conductors 2

Subject Categories:

  • Radiofrequency Wave Propagation
  • Electrical and Electronic Equipment
  • Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE