Design of highly sensitive complementary metamaterial‐based microwave sensor for characterisation of dielectric materials

Samad, Abdul; Hu, Wei; Shahzad, Waseem; Raza, Hamid Saeed; Ligthart, L.P.

doi:10.1049/iet-map.2019.1024

Cited by 4 publications

(1 citation statement)

References 36 publications

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“…Existing resonant sensors [30,31] can be evaluated based on their permittivity through variations in the resonant frequency. The resonant frequency approximates the permittivity utilizing a parabolic equation, which is described as follows: Existing resonant sensors [30,31] can be evaluated based on their permittivity through variations in the resonant frequency. The resonant frequency approximates the permittivity utilizing a parabolic equation, which is described as follows:…”

Section: Fabrication and Measurementsmentioning

confidence: 99%

A Mach–Zehnder Interferometer Refractive Index Sensor on a Spoof Surface Plasmon Polariton Waveguide

Zhang

Liu

et al. 2022

Electronics

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In this paper, we experimentally and numerically confirm a planar Mach–Zehnder interferometer (MZI) device for sensing dielectric samples based on a spoof surface plasmon polariton (SSPP) waveguide. The MZI system is constructed using two different ultrathin transmission lines with distinct dispersion units supporting SSPPs. After SSPPs propagate a certain propagation distance, a resonant dip is formed at a specific frequency due to destructive interference, whose displacement enables the SSPP to be modulated by one of the MZI arms loaded with dielectric samples. We investigate how the variations in the permittivity and thickness of dielectric samples affect the sensibility. Through an error analysis between the experimental measurements and numerical calculations, it is demonstrated that the plasmonic sensor based on the MZI has a high precision. The proposed technique is compact and robust and paves a versatile route toward the chip-scale functional devices in microwave circuits.

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