Transmission Losses in Left-handed Materials

TL;DR

This paper investigates the causes of transmission losses in left-handed materials, showing they can transmit well despite dispersion, with metallic permittivity improving transmission and dielectric absorption explaining high experimental losses.

Contribution

It provides a numerical analysis clarifying the origins of transmission losses and demonstrates that metallic permittivity enhances transmission in left-handed structures.

Findings

Left-handed structures can have good transmission despite dispersion.

High losses are due to dielectric absorption, not the structure itself.

Metallic components improve transmission properties.

Abstract

We numerically analyze the origin of the transmission losses in left-handed structures. Our data confirms that left handed structures can have very good transmission properties, in spite of the expectable dispersion of their effective permeability and refraction index. The large permittivity of the metallic components improves the transmission. High losses, observed in recent experiments, could be explained by the absorption of the dielectric board.