High Sensitivity Refractive Index Sensor Based on Frequency Selective Surfaces Absorber

Wei Zhang; Jian Ying Li; Jian Xie; Rui Xu

doi:10.1109/LSENS.2018.2862389

High Sensitivity Refractive Index Sensor Based on Frequency Selective Surfaces Absorber

Wei Zhang, Jian Ying Li, Jian Xie, Rui Xu

School of Electronics and Information

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

In this article, a frequency selective surface sensor that can be used to detect the refractive index is designed. First, the absorber with single resonant frequency and high absorption is optimized and analyzed. The resonant frequency can be changed by loading a dielectric with different refractive indexes on the absorber. When the thickness of the unknown dielectric is constant, the resonant frequency of the sensor is uniquely related to the refractive index of the unknown dielectric. The linear relation between the two is obtained by simulation fitting, and the performance of the sensor is verified. S_fre of the proposed sensor is 1.311 × 10⁹ Hz/RIU (refractive index unit), and the figure of merit (FOM) can reach 7.2778 RIU¹.

Original language	English
Article number	3501804
Journal	IEEE Sensors Letters
Volume	2
Issue number	3
DOIs	https://doi.org/10.1109/LSENS.2018.2862389
State	Published - Sep 2018

Keywords

frequency selective surface (FSS)
high sensitivity
Microwave/millimeter wave sensors
refractive index (RI) sensor
resonators

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10.1109/LSENS.2018.2862389

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title = "High Sensitivity Refractive Index Sensor Based on Frequency Selective Surfaces Absorber",

abstract = "In this article, a frequency selective surface sensor that can be used to detect the refractive index is designed. First, the absorber with single resonant frequency and high absorption is optimized and analyzed. The resonant frequency can be changed by loading a dielectric with different refractive indexes on the absorber. When the thickness of the unknown dielectric is constant, the resonant frequency of the sensor is uniquely related to the refractive index of the unknown dielectric. The linear relation between the two is obtained by simulation fitting, and the performance of the sensor is verified. Sfre of the proposed sensor is 1.311 × 109 Hz/RIU (refractive index unit), and the figure of merit (FOM) can reach 7.2778 RIU1.",

keywords = "frequency selective surface (FSS), high sensitivity, Microwave/millimeter wave sensors, refractive index (RI) sensor, resonators",

author = "Wei Zhang and Li, {Jian Ying} and Jian Xie and Rui Xu",

note = "Publisher Copyright: {\textcopyright} 2018 IEEE.",

year = "2018",

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doi = "10.1109/LSENS.2018.2862389",

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T1 - High Sensitivity Refractive Index Sensor Based on Frequency Selective Surfaces Absorber

AU - Zhang, Wei

AU - Li, Jian Ying

AU - Xie, Jian

AU - Xu, Rui

PY - 2018/9

Y1 - 2018/9

N2 - In this article, a frequency selective surface sensor that can be used to detect the refractive index is designed. First, the absorber with single resonant frequency and high absorption is optimized and analyzed. The resonant frequency can be changed by loading a dielectric with different refractive indexes on the absorber. When the thickness of the unknown dielectric is constant, the resonant frequency of the sensor is uniquely related to the refractive index of the unknown dielectric. The linear relation between the two is obtained by simulation fitting, and the performance of the sensor is verified. Sfre of the proposed sensor is 1.311 × 109 Hz/RIU (refractive index unit), and the figure of merit (FOM) can reach 7.2778 RIU1.

AB - In this article, a frequency selective surface sensor that can be used to detect the refractive index is designed. First, the absorber with single resonant frequency and high absorption is optimized and analyzed. The resonant frequency can be changed by loading a dielectric with different refractive indexes on the absorber. When the thickness of the unknown dielectric is constant, the resonant frequency of the sensor is uniquely related to the refractive index of the unknown dielectric. The linear relation between the two is obtained by simulation fitting, and the performance of the sensor is verified. Sfre of the proposed sensor is 1.311 × 109 Hz/RIU (refractive index unit), and the figure of merit (FOM) can reach 7.2778 RIU1.

KW - frequency selective surface (FSS)

KW - high sensitivity

KW - Microwave/millimeter wave sensors

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DO - 10.1109/LSENS.2018.2862389

M3 - 文章

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SN - 2475-1472

VL - 2

JO - IEEE Sensors Letters

JF - IEEE Sensors Letters

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ER -

High Sensitivity Refractive Index Sensor Based on Frequency Selective Surfaces Absorber

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