Title :
Magnetic near-field imaging with a racemic array of helical-shaped metallic wires
Author :
Morgado, Tiago A. ; Silveirinha, Mario G.
Author_Institution :
Dept. of Electr. Eng., Univ. of Coimbra, Coimbra, Portugal
Abstract :
We demonstrate that a racemic array of helical-shaped metallic wires may behave as the magnetic analog of the conventional wire medium formed by parallel straight metallic wires. It is shown that under transverse electric (TE) excitations, such metamaterial supports a quasi-TEM dispersionless mode with respect to the transverse wave vector component. Exploiting this property, we show that this metamaterial may enable the channeling of the near-field details of TE polarized waves.
Keywords :
electromagnetic metamaterials; magnetic field measurement; wires; helical-shaped metallic wires; magnetic near-field imaging; metamaterial; parallel straight metallic wires; quasiTEM dispersionless mode; racemic array; transverse electric excitations; transverse wave vector component; Arrays; Dispersion; Magnetic materials; Magnetic resonance imaging; Metamaterials; Wires; Metamaterials; near-field imaging; wire media;
Conference_Titel :
Antennas and Propagation (EuCAP), 2015 9th European Conference on
