J. Phys. III France
Volume 6, Numéro 6, June 1996
Page(s) 721 - 725
DOI: 10.1051/jp3:1996151
J. Phys. III France 6 (1996) 721-725

Modelling of Dispersive Chiral Media: Limitations on Material Parameters

S.A. Tretyakov and E. Yu. Komarov

St. Petersburg State Technical University, Radiophysics Department, 195251 St. Petersburg. Polytekhnicheskaya 29, Russia

(Received 18 December 1995, accepted 11 April 1996)

Single-resonance models of the constitutive parameters of artificial isotropic chiral composites are analysed. Limitations on the medium parameters which follow from non-negativeness of the field energy density are established and discussed. The analysis is restricted to the frequency regions where the losses can be neglected. As a results, it is shown that the single-resonance model cannot be used at frequencies far from the resonance or the low-frequency region.

© Les Editions de Physique 1996