Results 201 to 210 of about 5,524 (234)
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A Relative Permittivity-Based Air Pressure Sensor Using Standard CMOS Process
IEEE Sensors Journal, 2017In this paper, a novel pressure-sensing technique based on measuring the relative permittivity of air is introduced. Previous works in this area are mostly centered around mechanical sensors paired with electrical readout circuits. However, the proposed CMOS-based pressure sensor is able to achieve the full sensing process electrically, from the ...
John H. Kang, Sujin Park, SeongHwan Cho
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Relative Permittivity Meter Using a Capacitive Sensor and an Oscillating Current Source
IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, 2019The relative permittivity (also known as dielectric constant) is one of the physical properties that characterize a substance. The measurement of its magnitude can be useful in the analysis of several fluids, playing an important role in many industrial processes.
Daniel de Almeida Arantes +7 more
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IEEE Sensors Journal, 2020
This paper proposes miniaturized, lightweight and high sensitivity planar metamaterial based sensors for relative permittivity measurement within [0.9–10.9] GHz band. Each proposed sensor is designed using a thin-substrate microstrip line loaded with a single complementary split ring resonator (CSRR).
Salem A. Alotaibi +2 more
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This paper proposes miniaturized, lightweight and high sensitivity planar metamaterial based sensors for relative permittivity measurement within [0.9–10.9] GHz band. Each proposed sensor is designed using a thin-substrate microstrip line loaded with a single complementary split ring resonator (CSRR).
Salem A. Alotaibi +2 more
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Sensors and Actuators A: Physical, 2019
Binary CO2-alcohol mixtures, such as CO2-expanded liquids (CXLs), are promising green solvents for reaching higher performance in flow chemistry and separation processing.
Martin Andersson +3 more
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Binary CO2-alcohol mixtures, such as CO2-expanded liquids (CXLs), are promising green solvents for reaching higher performance in flow chemistry and separation processing.
Martin Andersson +3 more
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2019 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), 2019
This paper presents an error compensation algorithm for indirect resonant planar relative permittivity sensor principles up to 100 GHz. Besides the measurement of the material under test (MUT), the algorithm requires additional measurements of at least two reference materials. The proposed algorithm is tested for the three most relevant modeling errors
Lau, Isabella +3 more
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This paper presents an error compensation algorithm for indirect resonant planar relative permittivity sensor principles up to 100 GHz. Besides the measurement of the material under test (MUT), the algorithm requires additional measurements of at least two reference materials. The proposed algorithm is tested for the three most relevant modeling errors
Lau, Isabella +3 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. For simplicity reasons, planar, resonant permittivity sensors, which are directly integrated on the unknown PCB material, are widely used.
Isabella Lau +8 more
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Accurate and precise knowledge of the relative permittivity of printed circuit board (PCB) materials is essential for the reliable design of high-frequency circuits. For simplicity reasons, planar, resonant permittivity sensors, which are directly integrated on the unknown PCB material, are widely used.
Isabella Lau +8 more
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Sensors and Actuators B: Chemical, 2019
Abstract Oil filled electrical transformers are present worldwide. Their lifetime is depended on many factors such as load, age and their environment, making the theoretical health prediction a challenge. A smarter approach is to monitor the health of these transformers online using in-situ sensors.
Alex Risos, Gideon Gouws
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Abstract Oil filled electrical transformers are present worldwide. Their lifetime is depended on many factors such as load, age and their environment, making the theoretical health prediction a challenge. A smarter approach is to monitor the health of these transformers online using in-situ sensors.
Alex Risos, Gideon Gouws
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2023 IEEE MTT-S Latin America Microwave Conference (LAMC), 2023
Karen N. Olan-Nuñez +2 more
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Karen N. Olan-Nuñez +2 more
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