Results 241 to 250 of about 35,150 (277)

Relative Permittivity Meter Using a Capacitive Sensor and an Oscillating Current Source

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, 2019
The 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.
Germano Lambert-Torres, Mateus Mendes Campos, Levy Ely de Lacerda de Oliveira, Carlos Eduardo Teixeira, Daniel de Almeida Arantes, Luiz Eduardo Borges da Silva, Germando Araujo da Costa, Erik Leandro Bonaldi   +7 more
openaire   +3 more sources

An Error Compensation Algorithm for Indirect Resonant Planar Relative Permittivity Sensor Principles up to 100 GHz

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
Robert Weigel, Isabella Lau, Fabian Lurz, Alexander Koelpin   +3 more
openaire   +3 more sources

A microfluidic relative permittivity sensor for feedback control of carbon dioxide expanded liquid flows

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.
Anton Wilson, Martin Andersson, Klas Hjort, Lena Klintberg   +3 more
openaire   +3 more sources

Influence of the PCB Manufacturing Process on the Measurement Error of Planar Relative Permittivity Sensors Up To 100 GHz

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, Ali Hajian, Fabian Michler, Gerald Gold, Fabian Lurz, Ulrich Schmid, Klaus Helmreich, Robert Weigel, Alexander Koelpin   +8 more
openaire   +3 more sources

Inline and Real-Time Microfluidic Relative Permittivity Sensor Using Highly Doped Silicon Sidewall Electrodes

2024 IEEE 37th International Conference on Micro Electro Mechanical Systems (MEMS)
This paper reports an inline sensor for thereal-time measurement of the relative permittivity of acontinuously flowing fluid, with electrodes that areelectrically isolated from the fluid. The sensor has beencharacterised for relative permittivity values ranging from1 to 80 – including water and water-containing mixtures –showing an accuracy within 3 ...
Bonnema, Maarten J.S., Veltkamp, Henk-Willem, Alveringh, Dennis, Wiegerink, Remco J., Lötters, Joost C.   +4 more
openaire   +3 more sources

In-situ aging monitoring of transformer oil via the relative permittivity and DC conductivity using novel interdigitated dielectrometry sensors (IDS)

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
openaire   +3 more sources

Determination of the Relative Permittivity and Loss Tangent of Liquid Samples Using a Miniature Low-Cost Microwave Sensor

2023 IEEE MTT-S Latin America Microwave Conference (LAMC), 2023
Karen N. Olan-Nuñez, Roberto S. Murphy-Arteaga, Héctor N. Morales-Lovera   +2 more
openaire   +2 more sources

Design of 3-slot loaded with T-edge rectangular patch sensor for measurement of relative permittivity

Materials Today: Proceedings, 2023
Swaranpreet Kaur, Surinder Singh, M.M. Sinha   +2 more
openaire   +2 more sources

Humidity dependent permittivity characterization of polyvinyl-alcohol film and its application in relative humidity RF sensor [PDF]

2014 44th European Microwave Conference, 2014
Rolf Jakoby, Andreas Penirschke, Alex Wiens, W. Hu, Yuliang Zheng, Donghang Lu   +5 more
openaire   +2 more sources

TDR-Transformer: A transformer neural network model to determine soil relative permittivity variations along a time domain reflectometry sensor waveguide

Computers and Electronics in Agriculture
Zhuangji Wang, Dennis Timlin, Xiaofei Gong, Yuki Kojima, Shan Hua, David Fleisher, Wenguang Sun, Sahila Beegum, Vangimalla R. Reddy, Katherine Tully, Robert Horton   +10 more
openaire   +2 more sources