Results 21 to 30 of about 10,676 (263)

Dielectric Measurement of Agricultural Grain Moisture—Theory and Applications

Sensors, 2022
Moisture content is a critical variable for the harvesting, processing, storing and marketing of cereal grains, oilseeds and legumes. Efficient and accurate determination of grain moisture content even with advanced nondestructive techniques, remains a ...
Scott B. Jones, Wenyi Sheng, Dani Or
doaj   +1 more source

Broadband Measurement of Substrate Complex Permittivity Using Optimized ABCD Matrix

IEEE Access, 2020
In this paper, a novel two-transmission-line method based on optimized ABCD matrix for broadband and continuous substrate dielectric characterization is presented.
Longzhu Cai, Zhi Hao Jiang, Wei Hong
doaj   +1 more source

Temperature-dependent complex dielectric permittivity: a simple measurement strategy for liquid-phase samples

Scientific Reports, 2023
Microwaves (MWs) are an emerging technology for intensified and electrified chemical manufacturing. MW heating is intimately linked to a material’s dielectric permittivity.
Montgomery Baker-Fales, José D. Gutiérrez-Cano, José M. Catalá-Civera, Dionisios G. Vlachos   +3 more
doaj   +1 more source

A New Planar Microwave Sensor for Building Materials Complex Permittivity Characterization

Sensors, 2020
A new microwave sensor is proposed to characterize the complex relative permittivity of building non-magnetic materials and used in the characterization of three concrete samples.
João G. D. Oliveira, José G. Duarte Junior, Erica N. M. G. Pinto, Valdemir P. Silva Neto, Adaildo G. D’Assunção   +4 more
doaj   +1 more source

THE MEASUREMENT CELL BASED ON THE QUARTZ QUAZIOPTICAL RESONATOR FOR RESEARCH ON DIELECTRIC LIQUIDS IN THE SUB-THZ RANGE [PDF]

Радиофизика и электроника, 2016
Using WGM resonators allow achieving high accuracy in determining the substances permittivities due to the high Q-factor. The resonator with a microfluidic channel is promising for the study of small-volume liquids, which is especially important for ...
A. A. Barannik, S. A. Vitusevich, А. I. Gubin, I. A. Protsenko, N. T. Cherpak   +4 more
doaj   +1 more source

Broadband measurement of high permittivity at millimetre‐wave frequencies

Electronics Letters, 2016
In this Letter, a method for the broadband measurement of complex permittivity using a quasi‐optical technique is presented. After calibration of the quasi‐optical system, the material under test is inserted into the system and S‐parameters are measured ...
Y.‐P. Hong, M.J. Salter, D.‐J. Lee
doaj   +1 more source

Precise measurement of complex permittivity of materials for telecommunications devices

Journal of Telecommunications and Information Technology, 2001
In order to obtain precise complex permittivity of the dielectric materials obtained from the perturbation method a correction curve is made using the electromagnetic field simulator which applies transmission line modeling (TLM) method.
Takayuki Nakamura, Yoshio Nikawa
doaj   +1 more source

Condition Monitoring of Photovoltaic Cables Based Cross-Linked Polyolefin Insulation Under Combined Accelerated Aging Stresses: Electrical and Mechanical Assessment

Energy Reports, 2022
The degradation of insulating materials has been recognized as a prime cause of the precocious failure of cable systems. In this research, the role of simultaneous thermal and mechanical stresses on the insulation integrity of cross-linked polyolefin ...
Ramy S.A. Afia, Ehtasham Mustafa, Zoltán Ádám Tamus   +2 more
doaj   +1 more source

Complex Permittivity Measurements of Film-Type Materials: Effect of the Waveguide Flange

IEEE Access
The flexibility and thinness of most film-type materials make it difficult to use conventional measurement methods such as those in international or organizational standards to accurately measure the complex permittivity of these materials.
Han-Hee Lee, Sang Wook Yoon, Jae Wook Lee   +2 more
doaj   +1 more source

A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection

Advanced Engineering Materials, EarlyView.
A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan, Shuvra Saha, Sumit Hassan Eshan, Rinku Basak, Md. Nahian Al Subri Ivan, Ahmed Murtuza Saleque, Raja Tariqul Hasan Tusher, Sadia Zabin, Md. Abdur Rahman, Yuen Hong Tsang   +9 more
wiley   +1 more source