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Tunable Bleustein–Gulyaev Permittivity Sensors
2020We present a novel electric permittivity sensor based on Bleustein–Gulyaev (BG) waves. We also demonstrate a mechanism by which biasing can be used to modulate the sensitivity of permittivity sensors to match different electric permittivity ranges. We formulate the nonlinear electromechanical differential equations governing the dynamics of BG waves ...
Alaa Elhady, Eihab Abdel-Rahman
exaly +2 more sources
Highly-Sensitive Microwave Phase-Variation Permittivity Sensors
2023 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC), 2023Pau Casacuberta +2 more
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IEEE Transactions on Microwave Theory and Techniques, 2019 Accurate and precise knowledge of the relative permittivity of printed circuit board (PCB) materials is essential for the reliable design of high-frequency circuits.
Isabella Lau +2 more
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Analysis of tunable Bleustein–Gulyaev permittivity sensors
Journal of Applied Physics, 2021We present a novel electric permittivity sensor based on Bleustein–Gulyaev (BG) waves. Toward that end, we formulate the nonlinear electromechanical partial differential equations governing a BG wave resonator. We find that the permittivity of the material-under-test changes the sensor natural frequencies, thereby enabling the implementation of a ...
Alaa Elhady +2 more
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Broadband permittivity sensor for biodiesel and blends
Fuel, 2019Abstract Electrical properties have gained interest in biofuels applications due to advances in radio frequency and microwave processing and characterization of biodiesel. In those applications, sensors play a key role since the accurate measurement of electrical properties is needed.
Corach, Julián +3 more
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Snow Microwave Complex Permittivity Measured with Resonator Sensors
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019Microwave coaxial resonator sensors are used to retrieve snow complex dielectric permittivity ${\varepsilon _{\text{S}}} = \varepsilon _{\text{S}}^{\prime}{\text{i}} \cdot \varepsilon _{\text{S}}^{\prime\prime}$ from sensors frequency response. In addition to the conventional analytical approach, electromagnetic simulation software HFSS is used to ...
Reza Naderpour +2 more
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Microwave Sensors for Permittivity Measurement of Solid Materials
2024 International Microwave and Antenna Symposium (IMAS)F. Ataa Allah +3 more
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Sensitivity Analysis of Microwave Sensors for the Permittivity Measurement of Liquids
2009 German Microwave Conference, 2009This paper presents an advanced microwave sensor for the complex permittivity measurement of liquids. By means of a rigorous mode matching technique, the sensitivity of the microwave sensor is analyzed and its structure is successfully optimized for the use at low frequencies.
Müller, Johannes +2 more
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Permittivity measurements in nanostructured TiO2 gas sensors
physica status solidi (a), 2010AbstractResistance and capacitance measurements, as a function of frequency, were carried out to analyze and model the electrical behavior of undoped titanium dioxide (TiO2) films. The sensing measurements were carried out in a chamber with independent temperature, pressure, gas composition, and flow rate control.
GIBERTI, Alessio +6 more
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Sensor for measuring the permittivity of a medium in closed systems
Measurement Techniques, 1996A sensor based on a two-mode transmission line for measuring the permittivity of a medium in closed systems is considered. Because of the different spatial structures (topologies) of the waves, a phase method of measuring the relative permittivity of the medium is obtained. A block diagram of the measuring system with the sensor is described.
V. I. Gvozdev +3 more
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