CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Waveguide miniaturization using uniaxial negative permeability metamaterial

Silvio Hrabar ; J. Bartolic ; Zvonimir Sipus (Institutionen för signaler och system, Antenner)
IEEE Transactions on Antennas and Propagation Vol. 53 (2005), 1, p. 110-119.
[Artikel, refereegranskad vetenskaplig]

A rectangular waveguide filled with anisotropic uniaxial metamaterial with transversal negative effective permeability is investigated both theoretically and experimentally. It is shown that such a waveguide supports propagation of the backward wave below the cutoff frequency, thus, it can be considered as a dual of the ordinary waveguide. The transversal dimension of this waveguide can be arbitrarily smaller than half of a wavelength in the filling material, provided that the transversal permeability is negative. This peculiar behavior may be used for fabrication of miniaturized rectangular waveguides. Several experimental miniaturized waveguides loaded with double ring resonators in 7 GHz frequency band have been designed, fabricated and tested. The measured results revealed backward-wave passband located below the cutoff frequency. Furthermore, it was experimentally shown that the increase of the physical length of the waveguide caused the decrease of the electrical length. This is a direct proof of the backward-wave propagation since the phase of the backward wave increases along the waveguide.

Nyckelord: Backward-wave, Metamaterials, Negative permeability, Uniaxial anisotropy, Waveguide

Denna post skapades 2009-03-31.
CPL Pubid: 92038


Läs direkt!

Länk till annan sajt (kan kräva inloggning)

Institutioner (Chalmers)

Institutionen för signaler och system, Antenner (2005-2014)


Information Technology

Chalmers infrastruktur