Excitation of a homogeneous dielectric sphere by a point electric dipole

TL;DR

This paper explores how resonance conditions in small dielectric spheres affect their directivity, focusing on the excitation of modes in high-refractive-index spheres for improved antenna performance.

Contribution

It provides a detailed analysis of resonance effects and mode excitation in small dielectric spheres, advancing understanding of their antenna capabilities.

Findings

Resonance conditions significantly influence directivity.

High refractive index enhances mode excitation.

Resonance tuning improves antenna performance.

Abstract

Electrically small dielectric antennas are of great interest for modern technologies, since they can significantly reduce the physical size of electronic devices for processing and transmitting information. We investigate the influence of the resonance conditions of an electrically small dielectric spherical antenna with a high refractive index on its directivity and analyze the dependence of these resonances on the effectively excited modes of the dielectric sphere.