Resonant features of planar Faraday metamaterial with high structural symmetry

Study of properties of a 4-fold array of planar chiral rosettes placed on a ferrite substrate

¹ Usikov Institute of Radiophysics and Electronics, National Academy of Sciences of Ukraine, 12, Proskura St., Kharkiv 61085, Ukraine
² Institute of Radioastronomy, National Academy of Sciences of Ukraine, 4, Krasnoznamennaya St., Kharkiv 61002, Ukraine
³ School of Radio Physics, Karazin Kharkiv National University, 4, Svobody Square, Kharkiv 61077, Ukraine

^a e-mail: tarapov@ire.kharkov.ua

Received: 8 August 2012
Revised: 15 November 2012
Accepted: 8 January 2013
Published online: 26 February 2013

Abstract

The transmission of electromagnetic wave through a planar chiral structure, loaded with the gyrotropic medium being under an action of the longitudinal magnetic field, is studied. The frequency dependence of the metamaterial resonance and the angle of rotation of the polarization plane are obtained. We demonstrate both theoretically and experimentally a resonant enhancement of the Faraday rotation. The ranges of frequency and magnetic field strength are defined, where the angle of polarization plane rotation for the metamaterial is substantially higher than that one for a single ferrite slab.