Novel MNZ-type microwave sensor for testing magnetodielectric materials

Jha, Abhishek; Delmonte, Nicolò; Lamęcki, Adam; Mrozowski, Michał; Bozzi, M.

doi:10.1038/s41598-020-73696-8

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…Using (5), the proposed sensor's sensitivity due to the first and second resonance is extracted and plotted in Fig. 8.…”

Section: Sensitivity Analysismentioning

confidence: 99%

“…These technologies find applications in the defense sector and possess a very important role in the industrial sector as well [4]. For instance, measuring structural/operational vitals of a system in an industry [5,6] and understanding the composition of a material and/or chemical [7,8]. These technologies also play a significant role in biomedical research [9,10], such as neural recording [11], glucose monitoring [12], and intracranial pressure monitoring [13].…”

Section: Introductionmentioning

confidence: 99%

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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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“…Using (5), the proposed sensor's sensitivity due to the first and second resonance is extracted and plotted in Fig. 8.…”

Section: Sensitivity Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of Dielectric Substrates Using Dual Band Microwave Sensor

Armghan

Alanazi

Altaf³

et al. 2021

IEEE Access

View full text Add to dashboard Cite

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Epsilon-Near-Zero Microwave Sensors

Jha

2021

Interdigital Sensors

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An Improved Cavity-Perturbation Approach for Simultaneously Measuring the Permittivity and Permeability of Magneto-Dielectric Materials in Sub-6G

Zhang

et al. 2021

IEEE Access

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Magneto-electric materials with low loss have prospective applications in microwave systems as they enable miniaturization and broadband impedance matching. Two example applications are antennas and filters in sub-6G communication systems. Therefore, high-accuracy and wideband testing are critical for magneto-electric materials, whose complex permittivity and permeability are usually dependent on frequency. In this paper, the mutual interference between the electric and magnetic field within magneto-electric material samples was seriously considered. It was found that the results calculated with the original perturbation formula were overestimated when the sample size was not so small or higher-order modes are used, especially when the electric or magnetic field is perpendicular to the material under test. Two methods based on perturbation, namely the iteration method and the multi-state method are proposed to reduce the impact of the mutual interference, which have been proven to be direct and effective through theoretical analysis and experiments. Finally, several rod-shaped specimens processed from several standard dielectric materials (PTFE, fused silica, Al 2 O 3 ) and synthesized magneto-electric materials were measured in a fabricated cavity with a vector network analyzer. Experimental results show that the results obtained by the modified formula are more accurate than those obtained by the original formula, and are in good agreement with the data measured by other methods.INDEX TERMS Magneto-electric materials, complex permittivity and permeability, iteration, multi-state, mutual interference, perturbation.

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Novel MNZ-type microwave sensor for testing magnetodielectric materials

Cited by 6 publications

References 22 publications

Characterization of Dielectric Substrates Using Dual Band Microwave Sensor

Characterization of Dielectric Substrates Using Dual Band Microwave Sensor

Epsilon-Near-Zero Microwave Sensors

An Improved Cavity-Perturbation Approach for Simultaneously Measuring the Permittivity and Permeability of Magneto-Dielectric Materials in Sub-6G

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