A comparative review of the main techniques for electromagnetic characterization of materials / Uma revisão comparativa das principais técnicas de caracterização eletromagnética de materiais

2021 ◽  
Vol 7 (7) ◽  
pp. 75176-75188
Author(s):  
Marcelo da Silva Matias ◽  
Luis Alberto Rabanal Ramirez
Keyword(s):  
Detailed Analysis ◽  
Microwave Frequency ◽  
Specific Technique ◽  
Dielectric Characterization ◽  
Comparative Review ◽  
Measurement Results ◽  
Characterization Of Materials

This paper presents the main techniques of electromagnetic characterization electromagnetic at microwave frequency. A detailed analysis of these is performed, indicating which materials under test (MUT) can be measured with the specific technique. Additionally, for the dielectric characterization, measurement results are presented with the best technique that suits this case.

Microwave Characterization of Materials Using a Vector Network Analyzer

1994 ◽  
Vol 347 ◽  
Author(s):  
David Blackham ◽  
Roger Pollard
Keyword(s):  
Vector Network Analyzer ◽  
Network Analyzer ◽  
Error Sources ◽  
Vector Error Correction ◽  
Microwave Characterization ◽  
Vector Error ◽  
Measurement Results ◽  
Versatile Tool ◽  
Characterization Of Materials

ABSTRACTThe vector network analyzer provides a versatile tool for use in the microwave characterization of material permittivity and/or permeability. An understanding of network analyzer error sources can be leveraged into better measurement results. Vector error correction not only reduces the systematic errors but can also be used to remove the effects of dielectric dams in broadband transmission/reflection measurements.

scholarly journals NON-CONTACT DIELECTRIC MEASUREMENTS ON POLYMER FILMS

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Blanka Škipina ◽  
Adriaan S. Luyt ◽  
Duško Dudić
Keyword(s):  
Test Material ◽  
Dielectric Measurements ◽  
Dielectric Parameters ◽  
Dielectric Characterization ◽  
Polar Polymers ◽  
Flow Through ◽  
Characterization Of Materials ◽  
Simple Measuring ◽  
Stable Current

Dielectric characterization of materials in the RF domain is usually carried out on samples with applied electroconductive electrodes. A high-quality contact between a sample and the measuring electrodes provides a stable current flow through the sample and information on the exact value of the electric field in which the sample is located. It also enables a simple measuring instrument to determine the dielectric parameters of the material being tested. However, the presence of contact potentials and the exchange of charge between the test material and the applied electrodes can mask some electrical phenomena in the material or significantly affect how we perceive these phenomena. In order to detect weak electrical processes in the material, for example the photoelectric response of non-polar polymers, contactless dielectric measurements must be carried out. The literature on non-contact dielectric measurements in the RF domain is poor, and because of that, this paper presents the methodology for determining the dielectric parameters of film-shaped materials in conditions of contactless dielectric measurements.

scholarly journals Preparation, crystal structure, and dielectric characterization of Li2W2O7 ceramic at RF and microwave frequency range

2017 ◽  
Vol 07 (01) ◽  
pp. 1720001 ◽  
Author(s):  
Jinwu Chen ◽  
Chunchun Li ◽  
Dan Wang ◽  
Huaicheng Xiang ◽  
Liang Fang
Keyword(s):  
Dielectric Properties ◽  
Single Phase ◽  
Microwave Dielectric Properties ◽  
Microwave Frequency ◽  
Solid State Reaction Method ◽  
Frequency Range ◽  
Conventional Solid State Reaction ◽  
Dielectric Characterization ◽  
Microwave Dielectric

Single phase Li2W2O7 with anorthic structure was prepared by the conventional solid-state reaction method at 550[Formula: see text]C and the anorthic structure was stable up to 660[Formula: see text]C. The dielectric properties at radio frequency (RF) and microwave frequency range were characterized. The sample sintered at 640[Formula: see text]C exhibited the optimum microwave dielectric properties with a relative permittivity of 12.2, a quality factor value of 17,700[Formula: see text]GHz (at 9.8[Formula: see text]GHz), and a temperature coefficient of the resonant frequency of [Formula: see text]232[Formula: see text]ppm/[Formula: see text]C as well as a high relative density [Formula: see text]94.1%. Chemical compatibility measurement indicated Li2W2O7 did not react with aluminum electrodes when sintered at 640[Formula: see text]C for 4[Formula: see text]h.

scholarly journals Dielectric Characterization of Oil Palm Fiber Reinforced Polycaprolactone-nickel Oxide Composite at Microwave Frequency

2015 ◽  
Vol 30 ◽  
pp. 273-278 ◽  
Author(s):  
Ahmad Fahad ◽  
Zulkifly Abbas ◽  
Mohamad Faiz Zainuddin ◽  
Suzan Jabbar ◽  
Abu Bakar Yakubu
Keyword(s):  
Nickel Oxide ◽  
Oil Palm ◽  
Microwave Frequency ◽  
Fiber Reinforced ◽  
Palm Fiber ◽  
Dielectric Characterization ◽  
Oxide Composite
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