Application of Pocklington´s equation to analysis of dipole frequency-selective surfaces of finite size

Author

Allam, A.M.M.A. ; Parker, E.A.

Author_Institution

University of Kent at Canterbury, Electronic Engineering Laboratories, Canterbury, UK

Volume

134

Issue

6

fYear

1987

fDate

12/1/1987 12:00:00 AM

Firstpage

521

Lastpage

526

Abstract

Pocklington´s equation is applied to arrays of linear dipoles. An integral equation for the currents induced in each dipole is derived for plane-wave illumination. The equation is solved by the method of moments. The current mode amplitudes for a 5 ¿¿ 5 array and a 20 ¿¿ 5 array are compared with those given by the standard modal analysis of an infinite periodic array using the same set of basis functions. In the latter case predicted transmission responses in the frequency range 18¿¿40 GHz link the calculations to experiment. The effect of the edge region on the induced current phasors and on the scattered fields is discussed. Near the resonance frequency for TE incidence there is a pronounced amplitude variation across the 20 ¿¿ 5 array. The analysis described in the paper is not restricted to periodic lattices.

Keywords

antenna theory; dipole antennas; integral equations; microwave antenna arrays; 18 to 40 GHz; Pocklington´s equation; TE incidence; antenna theory; basis functions; current mode amplitudes; current phasors; dipole frequency-selective surfaces; finite size; frequency range; induced currents; infinite periodic array; integral equation; linear dipoles array; method of moments; microwave antenna arrays; modal analysis; plane-wave illumination; resonance frequency; scattered fields; transmission responses;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings H

Publisher

iet

ISSN

0950-107X

Type

jour

DOI

10.1049/ip-h-2.1987.0105

Filename

4643067