Numerical and experimental studies of split ring resonators loaded on the sidewalls of rectangular waveguides
Artikel i vetenskaplig tidskrift, 2009

This work investigates the use of a lattice comprising split ring resonators (SRRs) as a negative permeability medium to achieve backward travelling modes within a rectangular waveguide. The loadings of such SRR-type periodic structures into a waveguide can be tailored such that the backward mode exists in a passband below the ordinary basic modal cutoff frequency, thus affording filtering capabilities and miniaturisation. Theoretical studies by two approaches are performed here, a moment method spectral domain analysis, and a commercial simulation tool. Parametric studies that characterise the effects of various dimensional and electrical properties on the dispersion behaviour of the SRR-loaded waveguide shall also be conducted. The SRR parameters are then optimised using the ant colony optimisation (ACO) algorithm to achieve a low backward passband, for a high degree of miniaturisation and isolation. Experimental results of measurements performed on a manufactured prototype of the optimised SRR-loaded waveguide will also be presented.

backward-wave

filters

Författare

Oscar Quevedo Teruel

Universidad Carlos III de Madrid

Eva Rajo

Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

Malcolm Ng Mou Kehn

Universite Concordia

IET Microwaves, Antennas and Propagation

1751-8725 (ISSN)

Vol. 3 1262-1270

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1049/iet-map.2008.0313