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Novel Sensors Based on the Symmetry Properties of Split Ring Resonators (SRRs)
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DOI：10.3390/s110807545.png)
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Abstract
En 中文
The symmetry properties of split ring resonators (SRRs) are exploited for the implementation of novel sensing devices. The proposed structure consists of a coplanar waveguide (CPW) loaded with movable SRRs on the back substrate side. It is shown that if the SRRs are placed with the slits aligned with the symmetry plane of the CPW, the structure is transparent to signal propagation. However, if the symmetry is broken, a net axial magnetic field can be induced in the inner region of the SRRs, and signal propagation is inhibited at resonance. The proposed structures can be useful as alignment sensors, position sensors and angle sensors. This novel sensing principle is validated through experiment.
Keywords:
split ring resonators
metamaterials
coplanar waveguide
position sensors
angle sensors
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