Planar Sensor for Material Characterization Based on the Sierpinski Fractal Curve

Filho, P. H. B. Cavalcanti; Araújo, Jacqueline; Oliveira, Mayara; Melo, M. T. de; Coutinho, M. S.; Silva, L. M. da; Llamas-Garro, Ignacio

doi:10.1155/2020/8830596

Cited by 4 publications

(3 citation statements)

References 16 publications

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“…Designed on Rogers RT Duriod, accuracy analysis of the sensor is also studied in the paper. A similar work to the above is discussed in [44], in which a Sierpinski fractal-curve-based structure is design, fabricated and validated. The variation of frequency for different dielectric permittivity values is being studied and experimentally validated in the discussed paper.…”

Section: Introductionmentioning

confidence: 97%

Development of a Microwave Sensor for Solid and Liquid Substances Based on Closed Loop Resonator

Aiswarya

Menon

Donelli

et al. 2021

Sensors

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In this work, a compact dielectric sensor for the detection of adulteration in solid and liquid samples using planar resonators is presented. Six types of filter prototypes operating at 2.4 GHz are presented, optimized, numerically assessed, fabricated and experimentally validated. The obtained experimental results provided an error less than 6% with respect to the simulated results. Moreover, a size reduction of about 69% was achieved for the band stop filter and a 75% reduction for band pass filter compared to standard sensors realized using open/short circuited stub microstrip lines. From the designed filters, the miniaturised filter with Q of 95 at 2.4 GHz and size of 35 mm × 35 mm is formulated as a sensor and is validated theoretically and experimentally. The designed sensor shows better sensitivity, and it depends upon the dielectric property of the sample to be tested. Simulation and experimental validation of the designed sensor is carried out by loading different samples onto the sensor. The adulteration detection of various food samples using the designed sensor is experimentally validated and shows excellent sensing on adding adulterants to the original sample. The sensitivity of the sensor is analyzed by studying the variations in resonant frequency, scattering parameters, phase and Q factor with variation in the dielectric property of the sample loaded onto the sensor.

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Section: Introductionmentioning

confidence: 97%

Development of a Microwave Sensor for Solid and Liquid Substances Based on Closed Loop Resonator

Aiswarya

Menon

Donelli

et al. 2021

Sensors

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“…Resonator-based sensors have been used in material characterization with high accuracy and sensitivity [13]. Developed microwave resonator-based sensors include implementations using substrate integrated waveguide (SIW) [14], split ring resonator (SRR) [15], metamaterial resonator (MTM) [16], LC resonator [17] and fractal resonator [18,19]. An overview of resonator-based sensors can be found in [13].…”

Section: Introductionmentioning

confidence: 99%

Microwave Spoof Surface Plasmon Sensor for Dielectric Material Characterization

et al. 2022

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A microwave planar resonator sensor design supporting spoof surface plasmon waves is used for wafer dielectric characterization. The proposed circuit guides the microwave as a surface wave across the metal signal line, from port to port of the device. The surface wave effectively interacts with the sample being measured, placed on top of the planar sensor. The proposed planar sensor is fabricated on an RF-35 substrate, resulting in a low-cost implementation. The sensor is used to discriminate between wafers with different dielectric permittivity and thickness. Quartz, borosilicate, BK7 glass and Silicon wafers have been characterized using the proposed sensor. The sensor resonant frequency and losses change according to the permittivity and the thickness of the samples, with an achieved sensor sensitivity of 60.22 MHz/εr. Simulation and measurements demonstrate that the proposed spoof surface plasmon resonator sensor can be used to create a high sensitivity sensor for dielectric material characterization. The dielectric constant and loss tangent of the samples are inferred from a polynomial fit obtained from sample simulations and confirmed through measurements.

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“…The use of fractal antennas and metasurfaces has the potential to significantly improve wireless communications, imaging, and radar systems by enabling compact, highperformance devices with enhanced functionalities. Furthermore, fractal geometries are increasingly used in designing microwave sensors for materials diagnostics due to their ability to operate in multiple frequency bands and their miniaturization capabilities [13][14][15][16][17]. Ongoing research in these areas continues to explore new designs, materials, and fabrication techniques to exploit their full potential.…”

mentioning

confidence: 99%

Fractal Metasurfaces and Antennas: An Overview for Advanced Applications in Wireless Communications

Venneri,

Costanzo,

Borgia

2024

Applied Sciences

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This paper provides an overview of fractal antennas and metasurfaces, exploring their design principles, performance, and applications. Fractal antennas, incorporating self-similar geometric shapes, offer several advantages, such as their multiband operation, compact size, and improved performance. Metasurfaces, on the other hand, are two-dimensional structures composed of subwavelength unit cells and are designed to achieve advantageous and unusual electromagnetic properties by enabling precise control over electromagnetic waves. This paper discusses the fundamental concepts of fractal antennas and metasurfaces, compares their characteristics, and presents the latest advances in research. Additionally, it highlights applications in wireless communications, energy harvesting, sensing, and beyond.

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Planar Sensor for Material Characterization Based on the Sierpinski Fractal Curve

Cited by 4 publications

References 16 publications

Development of a Microwave Sensor for Solid and Liquid Substances Based on Closed Loop Resonator

Development of a Microwave Sensor for Solid and Liquid Substances Based on Closed Loop Resonator

Microwave Spoof Surface Plasmon Sensor for Dielectric Material Characterization

Fractal Metasurfaces and Antennas: An Overview for Advanced Applications in Wireless Communications

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