Metamaterial Inspired Microwave Sensors

Schueler, Martin; Mandel, Christian; Puentes, Margarita; Jakoby, Rolf

doi:10.1109/mmm.2011.2181448

Cited by 237 publications

(124 citation statements)

References 30 publications

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“…More importantly, it is shown that in contrast to previously published metamaterial-inspired twodimensional displacement and alignment sensors, the proposed sensor can be operated at a single fixed frequency. The concept and simulation results are validated through measurement.Introduction: In recent years, the application of metamaterial-inspired resonators such as split ring resonators (SRRs) to sensors has attracted an increasing interest [1,2,3,4]. This has arisen because of the subwavelength dimensions, high quality factor resonance and sensitivity of the resonance characteristics of these elements to their physical dimensions and constituent materials.…”

mentioning

confidence: 99%

“…This has arisen because of the subwavelength dimensions, high quality factor resonance and sensitivity of the resonance characteristics of these elements to their physical dimensions and constituent materials. Various types of displacement and rotation sensors based on variation of resonance frequency, quality factor and notch depth in the transmission spectrum of SRR-loaded transmission lines (TLs) have been proposed in the literature [1,5,6,7,8]. The concept was also extended for the design of two-dimensional displacement sensors [9,10].…”

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confidence: 99%

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Two‐dimensional displacement and alignment sensor based on reflection coefficients of open microstrip lines loaded with split ring resonators

Horestani¹,

Naqui

Abbott³

et al. 2014

Electron. lett.

154

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This letter proposes a two-dimensional displacement and alignment sensor based on two open-ended transmission lines, each loaded with a split ring resonator (SRR). In this arrangement, the depth of resonanceinduced notches in the reflection coefficients can be used to sense a displacement of the loading SRRs in two orthogonal directions. Since the operation principle of the sensor is based on the symmetry properties of SRR-loaded transmission lines, the proposed sensor benefits from immunity to variations in ambient conditions. More importantly, it is shown that in contrast to previously published metamaterial-inspired twodimensional displacement and alignment sensors, the proposed sensor can be operated at a single fixed frequency. The concept and simulation results are validated through measurement.Introduction: In recent years, the application of metamaterial-inspired resonators such as split ring resonators (SRRs) to sensors has attracted an increasing interest [1,2,3,4]. This has arisen because of the subwavelength dimensions, high quality factor resonance and sensitivity of the resonance characteristics of these elements to their physical dimensions and constituent materials. Various types of displacement and rotation sensors based on variation of resonance frequency, quality factor and notch depth in the transmission spectrum of SRR-loaded transmission lines (TLs) have been proposed in the literature [1,5,6,7,8]. The concept was also extended for the design of two-dimensional displacement sensors [9,10].This letter proposes a two-dimensional displacement and alignment sensor based on the variation in the depth of resonant notch in the reflection coefficients of two SRR-loaded microstrip lines. Since both SRRs and microstrip lines are inherently compact structures, the proposed sensor benefits form a small size. Furthermore, since the operation principle of the sensor is based on the symmetry properties of the SRRs, the sensor is robust to ambient conditions such as changes in temperature. It is also shown that because the excitation from microstrip lines imposes an almost constant loading effect on the SRRs, displacement is only manifested in the depth of notch, leaving the resonance frequency intact. This is an important feature because it enables the sensor to work at a fixed frequency. This sensing mode allows to operate based on two reflection coefficients rather than using the transmission coefficient of the structure, where at least two fixed frequencies are required for the operation of two-dimensional displacement sensors [9,10].

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mentioning

confidence: 99%

mentioning

confidence: 99%

Two‐dimensional displacement and alignment sensor based on reflection coefficients of open microstrip lines loaded with split ring resonators

Horestani¹,

Naqui

Abbott³

et al. 2014

Electron. lett.

154

View full text Add to dashboard Cite

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“…These meta-atoms are essentially sub-wavelength electric or/and magnetic resonators which response to the external electromagnetic fields as harmonic oscillators [5].…”

Section: Metamaterials Based Devicesmentioning

confidence: 99%

“…Antennas: Metamaterial antennas are a class of antennas which use Metamaterial to increase performance of miniaturized (electrically small) antenna systems. For example, a wideband horn antenna (loaded with metamaterial-inspired particles) can be enabled to perform different manipulations on the transmitted and received signals, such as band-pass and band-stop filtering processes, and polarization transformation [5].…”

Section: Metamaterials Based Devicesmentioning

confidence: 99%

Design of Measuring System with Metamaterial Inspired CSRR

Sarwadnya¹,

Dawande²

2016

International Journal of Advanced Research in Computer and Comm

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This paper presents a design of measuring system with Metamaterial inspired CSRR (Complimentary SplitRing Resonator). The device is of portable, cost effective and which gives the accuracy. The theoretical approach of Metamaterial with its different applications is also discussed here. This paper is of high significance as current testing equipment of micro Complimentary Split-Ring Resonators (CSRR) are highly expensive, and therefore rare, but are also extremely bulky. Therefore developing portable, cost-effective, and robust testing equipment operating within the internationally reserved ISM radio frequency band is a main research work.

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“…However, in recent years, there is an increasing use of split-ring resonators in sensor and measuring technology, as they allow highly sensitive detection of changes in the polarizability (permittivity) of a material via the detection of a shift in the resonance frequency. Split-ring resonators are employed in a broad field of applications (Schueler et al, 2012). There are systems described in literature, e.g., for dielectric characterization of liquids (Ebrahimi et al, 2014) or analysis of organic tissues (Puentes et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Design and evaluation of split-ring resonators for aptamer-based biosensors

Reinecke

Walter

Kobelt

et al. 2018

J. Sens. Sens. Syst.

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Abstract. Split-ring resonators are electrical circuits, which enable highly sensitive readout of split capacity changes via a measurement of the shift in the resonance frequency. Thus, functionalization of the split allows the development of biosensors, where selective molecular binding causes a change in permittivity and therefore a change in split capacity. In this work, we present a novel approach using transmission line theory to describe the dependency between permittivity of the sample and resonance frequency. This theory allows the identification of all relevant parameters of a split-ring resonator and thus a target-oriented optimization process. Hereby all setup optimizations are verified with measurements. Subsequently, the split of a resonator is functionalized with aptamers and the sensor response is investigated. This preliminary experiment shows that introducing the target protein results in a shift in the resonance frequency caused by a permittivity change due to aptamer-mediated protein binding, which allows selective detection of the target protein.

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Metamaterial Inspired Microwave Sensors

Cited by 237 publications

References 30 publications

Two‐dimensional displacement and alignment sensor based on reflection coefficients of open microstrip lines loaded with split ring resonators

Two‐dimensional displacement and alignment sensor based on reflection coefficients of open microstrip lines loaded with split ring resonators

Design of Measuring System with Metamaterial Inspired CSRR

Design and evaluation of split-ring resonators for aptamer-based biosensors

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