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Numerical and experimental studies of split ring resonators loaded on the sidewalls of rectangular waveguides

O. Quevedo-Teruel ; Eva Rajo-Iglesias (Institutionen för signaler och system, Antenner) ; M. N. M. Kehn
IET Microwaves Antennas & Propagation (1751-8725). Vol. 3 (2009), 8, p. 1262-1270.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: backward-wave, filters



Denna post skapades 2010-02-26. Senast ändrad 2016-07-25.
CPL Pubid: 115254

 

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Institutioner (Chalmers)

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

Ämnesområden

Elektronik

Chalmers infrastruktur