Extremely Sensitive Microwave Sensor for Evaluation of Dielectric Characteristics of Low-Permittivity Materials

Haq, Tanveer Ul; Ruan, Cunjun; Zhang, Xingyun; Ullah, Shahid; Fahad, Ayesha Kosar; He, Wenlong

doi:10.3390/s20071916

Cited by 36 publications

(8 citation statements)

References 70 publications

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“…Thus, a narrower band and a sharper dip of the cut-off frequency of the bandwidth lead to higher Q-factor value. Figure 17 demonstrates the measurement of the quality factor obtained from the scattering parameter S21 based on the bandpass [ 36 , 85 , 86 ] and bandstop responses [ 16 , 76 , 88 , 89 , 90 , 91 ].…”

Section: Discussion and Research Challengesmentioning

confidence: 99%

“…Conversely, the CSRR can be integrated with the design of the metamaterial transmission lines for single-sensing. Haq et al [ 76 ] proposed a new Complementary sensor based on a Symmetric S-Shaped Resonator (CSSSR), which is a negative image of an S-shaped resonator. The CSSSR was etched out of the ground plane metallisation and excited by the feedline in the top view.…”

Section: Recent Developments Of Microwave Planar Resonatorsmentioning

confidence: 99%

“…( b ) Measured and simulated transmission response. The complementary SSSR is etched out of the ground plane metallisation in the bottom view and excited by the feedline in the top view [ 76 ].…”

Section: Figurementioning

confidence: 99%

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Review of Recent Microwave Planar Resonator-Based Sensors: Techniques of Complex Permittivity Extraction, Applications, Open Challenges and Future Research Directions

Alahnomi

Zakaria

Yussof

et al. 2021

Sensors

106

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Recent developments in the field of microwave planar sensors have led to a renewed interest in industrial, chemical, biological and medical applications that are capable of performing real-time and non-invasive measurement of material properties. Among the plausible advantages of microwave planar sensors is that they have a compact size, a low cost and the ease of fabrication and integration compared to prevailing sensors. However, some of their main drawbacks can be considered that restrict their usage and limit the range of applications such as their sensitivity and selectivity. The development of high-sensitivity microwave planar sensors is required for highly accurate complex permittivity measurements to monitor the small variations among different material samples. Therefore, the purpose of this paper is to review recent research on the development of microwave planar sensors and further challenges of their sensitivity and selectivity. Furthermore, the techniques of the complex permittivity extraction (real and imaginary parts) are discussed based on the different approaches of mathematical models. The outcomes of this review may facilitate improvements of and an alternative solution for the enhancement of microwave planar sensors’ normalized sensitivity for material characterization, especially in biochemical and beverage industry applications.

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Section: Discussion and Research Challengesmentioning

confidence: 99%

Section: Recent Developments Of Microwave Planar Resonatorsmentioning

confidence: 99%

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Review of Recent Microwave Planar Resonator-Based Sensors: Techniques of Complex Permittivity Extraction, Applications, Open Challenges and Future Research Directions

Alahnomi

Zakaria

Yussof

et al. 2021

Sensors

106

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“…To find out the relative permittivity of low permittivity materials, [30] proposes a highly sensitive sensor operating at microwave frequency. The sensor is composed of a complementary symmetry S-shaped resonator which is excited by a microstrip line as depicted in Fig.…”

Section: Identification Of Materials and Their Dielectric Properties Concentration Measurementmentioning

confidence: 99%

Applications of metamaterial sensors: a review

Prakash

Gupta

2021

Int. J. Microw. Wireless Technol.

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Sensors based on metamaterial absorbers are very promising when it comes to high sensitivity and quality factor, cost, and ease of fabrication. The absorbers could be used to sense physical parameters such as temperature, pressure, density as well as they could be used for determining electromagnetic properties of materials and their characterization. In this work, an attempt has been made to explore the various possible applications of these sensors. Metamaterial-based sensors are very popular for its diverse applications in areas such as biomedical, chemical industry, food quality testing, agriculture. Split-ring resonators with various shapes and topologies are the most frequently used structures where the sensing principle is based on electromagnetic interaction of the material under test with the resonator. Overcoming the design challenges using metamaterial sensors involving several constraints such as cost, compactness, reusability, ease in fabrication, and robustness is also addressed.

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“…M ATERIAL characterization technologies play a very vital role in various scientific fields [1][2][3]. These technologies find applications in the defense sector and possess a very important role in the industrial sector as well [4].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Dielectric Substrates Using Dual Band Microwave Sensor

Armghan

Alanazi

Altaf³

et al. 2021

IEEE Access

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In this work, a compact, inexpensive, and efficient dual band microwave sensor is proposed. The sensor is based on two Complementary Symmetric Split-Ring Resonators (CSSRRs) and possesses a high Q factor and wide sensing range. These CSSRRs are coupled electrically with two inductive patches to the Microstrip Transmission Line (MTL). This combination provides two dual bands, first at 5.35 GHz with a notch depth of -55.20 dB and second at 7.99 GHz with a notch depth of -22.54 dB. The sensor works in transmission mode and senses shift in frequency. Some commonly available dielectric substrates with relative permittivity ranges between 1 and 12 are considered Material Under Test (MUT), and detailed sensitivity analysis is being performed for each band. The dual band sensor is fabricated on a low-cost, widely available FR4 substrate and measured by CEYEAR AV3672D vector network analyzer. Additionally, the least square curve fitting method is used to develop a mathematical model for the measured results. An excellent agreement is observed between simulated, measured, and formulated results.

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Extremely Sensitive Microwave Sensor for Evaluation of Dielectric Characteristics of Low-Permittivity Materials

Cited by 36 publications

References 70 publications

Review of Recent Microwave Planar Resonator-Based Sensors: Techniques of Complex Permittivity Extraction, Applications, Open Challenges and Future Research Directions

Review of Recent Microwave Planar Resonator-Based Sensors: Techniques of Complex Permittivity Extraction, Applications, Open Challenges and Future Research Directions

Applications of metamaterial sensors: a review

Characterization of Dielectric Substrates Using Dual Band Microwave Sensor

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