Title:
Coplanar waveguide structures loaded with split-ring resonators
Author(s):
F. Falcone, F. Martin, J. Bonache, R. Marqué s and
M. Sorolla
Source:
© 2004 Wiley Periodicals, Inc. Microwave Opt. Technol. Lett.
Vol./Issue/Date:
Volume 40
Year:
2004
Page(s):
3–6
Keywords:
coplanar waveguide technology; split ring resonators; microwave
filters; metamaterials
Abstract:
Coplanar waveguide (CPW) transmission lines periodically
coupled to split-ring resonators (SRRs) are analyzed, designed,
and characterized. Due to inductive coupling between the lines and
SRRs, signal propagation is inhibited in the vicinity of the resonant frequency
of the rings. The result is a stop-band behavior that can be of
interest for the elimination of frequency parasitics in CPW-based devices.
Two different approaches are envisaged: a uniplanar structure,
where CPW and rings share the same metal level; and a bimetal structure
with SRRs etched on the back side of the substrate. It has been
found that the latter exhibits almost negligible insertion losses in the
pass band, and sharp cutoff and a high level of rejection in the stop
band, with few unit cells. Since ring dimensions are small compared to
the signal wavelength at resonance, the proposed SRR-CPWs are very
promising for the design of miniaturized microwave circuits.
Document:
Reference Id:
77
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