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

Chalmers, Signaler och system, Kommunikations- och antennsystem, Antennsystem

Malcolm Ng Mou Kehn

Université Concordia

IET Microwaves, Antennas and Propagation

1751-8725 (ISSN)

Vol. 3 8 1262-1270

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1049/iet-map.2008.0313

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Senast uppdaterat

2018-03-23