Electromagnetic scattering of an arbitrary plane wave from a spherical shell with a circular aperture

Richard W Ziolkowski, William A. Johnson

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The problem of the scattering of an electromagnetic plane wave with arbitrary polarization and angle of incidence from a perfectly conducting spherical shell with a circular aperture is solved with a generalized dual series approach. This canonical problem encompasses coupling to an open spherical cavity and scattering from a spherical reflector. In contrast to the closed sphere problem, the electromagnetic boundary conditions couple the TE and TM modes. A pseudodecoupling of the resultant dual series equations system into dual series problems for the TE and TM modal coefficients is accomplished by introducing terms that are proportional to the associated Legendre functions P0-m. The solutions of the TE and TM dual series problems require the further introduction of terms proportional to Pn -m, where 0≤n < m. These functions effectively complete the standard spherical harmonic basis set when an aperture is present and guarantee the satisfaction of Meixner's edge conditions. Having generated the modal coefficients, all desired electromagnetic quantities follow immediately. Numerical results for the currents induced on the open spherical shell and for the energy density of the field at its center are presented for the case of normal incidence.

Original languageEnglish (US)
Pages (from-to)1293-1314
Number of pages22
JournalJournal of Mathematical Physics
Volume28
Issue number6
StatePublished - 1987
Externally publishedYes

Fingerprint

Spherical Shell
Electromagnetic Scattering
electromagnetic scattering
spherical shells
Plane Wave
plane waves
apertures
Scattering
electromagnetism
Induced currents
Arbitrary
incidence
Series
Legendre functions
Boundary conditions
spherical harmonics
Polarization
coefficients
Incidence
scattering

ASJC Scopus subject areas

  • Organic Chemistry

Cite this

Electromagnetic scattering of an arbitrary plane wave from a spherical shell with a circular aperture. / Ziolkowski, Richard W; Johnson, William A.

In: Journal of Mathematical Physics, Vol. 28, No. 6, 1987, p. 1293-1314.

Research output: Contribution to journalArticle

@article{aff1aa9fb91b4db495021067b460228c,
title = "Electromagnetic scattering of an arbitrary plane wave from a spherical shell with a circular aperture",
abstract = "The problem of the scattering of an electromagnetic plane wave with arbitrary polarization and angle of incidence from a perfectly conducting spherical shell with a circular aperture is solved with a generalized dual series approach. This canonical problem encompasses coupling to an open spherical cavity and scattering from a spherical reflector. In contrast to the closed sphere problem, the electromagnetic boundary conditions couple the TE and TM modes. A pseudodecoupling of the resultant dual series equations system into dual series problems for the TE and TM modal coefficients is accomplished by introducing terms that are proportional to the associated Legendre functions P0-m. The solutions of the TE and TM dual series problems require the further introduction of terms proportional to Pn -m, where 0≤n < m. These functions effectively complete the standard spherical harmonic basis set when an aperture is present and guarantee the satisfaction of Meixner's edge conditions. Having generated the modal coefficients, all desired electromagnetic quantities follow immediately. Numerical results for the currents induced on the open spherical shell and for the energy density of the field at its center are presented for the case of normal incidence.",
author = "Ziolkowski, {Richard W} and Johnson, {William A.}",
year = "1987",
language = "English (US)",
volume = "28",
pages = "1293--1314",
journal = "Journal of Mathematical Physics",
issn = "0022-2488",
publisher = "American Institute of Physics Publising LLC",
number = "6",

}

TY - JOUR

T1 - Electromagnetic scattering of an arbitrary plane wave from a spherical shell with a circular aperture

AU - Ziolkowski, Richard W

AU - Johnson, William A.

PY - 1987

Y1 - 1987

N2 - The problem of the scattering of an electromagnetic plane wave with arbitrary polarization and angle of incidence from a perfectly conducting spherical shell with a circular aperture is solved with a generalized dual series approach. This canonical problem encompasses coupling to an open spherical cavity and scattering from a spherical reflector. In contrast to the closed sphere problem, the electromagnetic boundary conditions couple the TE and TM modes. A pseudodecoupling of the resultant dual series equations system into dual series problems for the TE and TM modal coefficients is accomplished by introducing terms that are proportional to the associated Legendre functions P0-m. The solutions of the TE and TM dual series problems require the further introduction of terms proportional to Pn -m, where 0≤n < m. These functions effectively complete the standard spherical harmonic basis set when an aperture is present and guarantee the satisfaction of Meixner's edge conditions. Having generated the modal coefficients, all desired electromagnetic quantities follow immediately. Numerical results for the currents induced on the open spherical shell and for the energy density of the field at its center are presented for the case of normal incidence.

AB - The problem of the scattering of an electromagnetic plane wave with arbitrary polarization and angle of incidence from a perfectly conducting spherical shell with a circular aperture is solved with a generalized dual series approach. This canonical problem encompasses coupling to an open spherical cavity and scattering from a spherical reflector. In contrast to the closed sphere problem, the electromagnetic boundary conditions couple the TE and TM modes. A pseudodecoupling of the resultant dual series equations system into dual series problems for the TE and TM modal coefficients is accomplished by introducing terms that are proportional to the associated Legendre functions P0-m. The solutions of the TE and TM dual series problems require the further introduction of terms proportional to Pn -m, where 0≤n < m. These functions effectively complete the standard spherical harmonic basis set when an aperture is present and guarantee the satisfaction of Meixner's edge conditions. Having generated the modal coefficients, all desired electromagnetic quantities follow immediately. Numerical results for the currents induced on the open spherical shell and for the energy density of the field at its center are presented for the case of normal incidence.

UR - http://www.scopus.com/inward/record.url?scp=0345212899&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0345212899&partnerID=8YFLogxK

M3 - Article

VL - 28

SP - 1293

EP - 1314

JO - Journal of Mathematical Physics

JF - Journal of Mathematical Physics

SN - 0022-2488

IS - 6

ER -