Results 231 to 240 of about 6,159 (262)

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
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Submersible Printed Split-Ring Resonator-Based Sensor for Thin-Film Detection and Permittivity Characterization [PDF]

IEEE Sensors Journal, 2016
A split-ring resonator (SRR)-based sensor for the detection of solid thickness and relative permittivity characterization of solid and liquid materials is proposed. The structure is composed of two SRRs hosted in a microstrip transmission line.
Gabriel Galindo-Romera, FRANCISCO Javier Herraiz-Martínez, Marta Gil   +2 more
exaly   +3 more sources

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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, 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.
Daniel de Almeida Arantes, Luiz Eduardo Borges da Silva, Carlos Eduardo Teixeira, Mateus Mendes Campos, Germano Lambert-Torres, Erik Leandro Bonaldi, Levy Ely de Lacerda de Oliveira, Germando Araújo da Costa   +7 more
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A Relative Permittivity-Based Air Pressure Sensor Using Standard CMOS Process

IEEE Sensors Journal, 2017
In 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
openaire   +1 more source

CSRR Based Sensors for Relative Permittivity Measurement With Improved and Uniform Sensitivity Throughout [0.9–10.9] GHz Band

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, Yepu Cui, Manos M. Tentzeris   +2 more
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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
Interpreting soil relative permittivity (εr) variations along a time domain reflectometry (TDR) waveguide provides an opportunity to determine soil water content at multiple depths using a vertically installed TDR sensor.
Zhuangji Wang, Dennis Timlin, Xiaofei Gong, Yuki Kojima, Shan Hua, David H. Fleisher, Wenguang Sun, Sahila Beegum, Vangimalla R. Reddy, Katherine Tully, Robert Horton   +10 more
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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   +1 more source

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   +1 more source

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
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High-Accuracy Complex Permittivity Characterization of Solid Materials Using Parallel Interdigital Capacitor- Based Planar Microwave Sensor

IEEE Sensors Journal, 2021
Cong Wang, Luqman Ali, Fan-Yi Meng
exaly