Expressions are derived for the smallest achievable radiation quality factor ( ) of an electrically small antenna in front of a conducting plane. Applying the low-frequency approximation to the… (More)

In this work the scattering of plane waves from a finite sized perfectly conducting wedge as a .function of its opening angle and the width of its faces is studied using the combination of physical… (More)

The translational addition theorems for the spherical scalar and vector wave functions are derived in a novel, unified way based on the simple and well-known concepts of the radiation and incoming… (More)

The accuracy of a spherical wave expansion is examined when the expansion is calculated from incomplete data of the radiation pattern, i.e., when field data on a part of the far-field sphere is… (More)

A transformation linking spherical multipole fields with generalized spheroidal multipole fields is derived. Applications including the inverse diffraction problem for spherically-scanned near field… (More)

A key structure in so-called metamaterial mediums is the elementary split-ring resonator. We consider in this paper the lowfrequency electromagnetic scattering by a split-ring particle modelled as a… (More)

The magnetic energy and inductance of current distributions on the surface of a torus are considered. Specifically, we investigate the influence of the aspect ratio of the torus, and of the pitch… (More)

The elementary split ring resonator is a key structure in so-called “metamaterial” mediums. In this presentation, low-frequency electromagnetic scattering by a split ring, modelled as a perfectly… (More)

INTRODUCTION Recently, we have investigated the classical inverse source problem of reconstructing an unknown radiating source from knowledge of the exterior field it generates, with emphasis on… (More)