Complex permittivity measurements at variable temperatures of low loss dielectric substrates employing split post and single post dielectric resonators

Mazierska, J.; Křupka, J.; Jacob, Mohan V.; Ledenyov, Dimitri O.

doi:10.1109/mwsym.2004.1338959

Cited by 16 publications

(7 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resonant frequencies and quality factors of the split post dielectric resonator are measured with and without a testing material (Figure 10) by using a vector network analyzer. The real part of the complex relative permittivity (ε r,m ) can then be calculated from the shift in the resonant frequency by using the formula [90]:…”

Section: Split Post Dielectric Resonator Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Dielectric Properties of Textile Materials: Analytical Approximations and Experimental Measurements—A Review

Mukai

2022

Textiles

View full text Add to dashboard Cite

Deciphering how the dielectric properties of textile materials are orchestrated by their internal components has far-reaching implications. For the development of textile-based electronics, which have gained ever-increasing attention for their uniquely combined features of electronics and traditional fabrics, both performance and form factor are critically dependent on the dielectric properties. The knowledge of the dielectric properties of textile materials is thus crucial in successful design and operation of textile-based electronics. While the dielectric properties of textile materials could be estimated to some extent from the compositional profiles, recent studies have identified various additional factors that have also substantial influence. From the viewpoint of materials characterization, such dependence of the dielectric properties of textile materials have given rise to a new possibility—information on various internal components could be, upon successful correlation, extracted by measuring the dielectric properties. In view of these considerable implications, this invited review paper summarizes various fundamental theories and principles related to the dielectric properties of textile materials. In order to provide an imperative basis for uncovering various factors that intricately influence the dielectric properties of textile materials, the foundations of the dielectrics and polarization mechanisms are first recapitulated, followed by an overview on the concept of homogenization and the dielectric mixture theory. The principal advantages, challenges and opportunities in the analytical approximations of the dielectric properties of textile materials are then discussed based on the findings from the recent literature, and finally a variety of characterization methods suitable for measuring the dielectric properties of textile materials are described. It is among the objectives of this paper to build a practical signpost for scientists and engineers in this rapidly evolving, cross-disciplinary field.

show abstract

Section: Split Post Dielectric Resonator Methodsmentioning

confidence: 99%

“…where f w and f wo are the resonant frequencies with and without sample, respectively; h is the sample thickness; and K ε is a function of ε r,m and h, and can be computed by an iterative method [90]. The loss tangent (tan δ) can be obtained from the measured quality factors by using the expression [90]:…”

Section: Split Post Dielectric Resonator Methodsmentioning

confidence: 99%

Dielectric Properties of Textile Materials: Analytical Approximations and Experimental Measurements—A Review

Mukai

2022

Textiles

View full text Add to dashboard Cite

show abstract

“…Employing “dielectric resonator” techniques (using the whispering gallery and quasi-

modes) several low loss single-crystal dielectrics have been measured [ 38 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 ]. In Table 1 , results of room temperature permittivity and the thermal coefficient of permittivity measurements using these techniques for several single-crystal dielectrics are presented.…”

Section: Microwave Measurements Of Dielectricsmentioning

confidence: 99%

Microwave Measurements of Electromagnetic Properties of Materials

Křupka

2021

Materials

View full text Add to dashboard Cite

A review of measurement methods of the basic electromagnetic parameters of materials at microwave frequencies is presented. Materials under study include dielectrics, semiconductors, conductors, superconductors, and ferrites. Measurement methods of the complex permittivity, the complex permeability tensor, and the complex conductivity and related parameters, such as resistivity, the sheet resistance, and the ferromagnetic linewidth are considered. For dielectrics and ferrites, the knowledge of their complex permittivity and the complex permeability at microwave frequencies is of practical interest. Microwave measurements allow contactless measurements of their resistivity, conductivity, and sheet resistance. These days contactless conductivity measurements have become more and more important, due to the progress in materials technology and the development of new materials intended for the electronic industry such as graphene, GaN, and SiC. Some of these materials, such as GaN and SiC are not measurable with the four-point probe technique, even if they are conducting. Measurement fixtures that are described in this paper include sections of transmission lines, resonance cavities, and dielectric resonators.

show abstract

“…One of the systems, which enable measuring in a wide frequency band, is presented in Ref. [22] and in Fig. 5a.…”

Section: The Case Of Normal Incidence Of Electromagnetic Wave On the mentioning

confidence: 99%

A Methodology of Metamaterial Effective Permittivity and Permeability Value Measurement

Sergeevich¹,

Ruslan²,

Albertovich

2017

JMSE-A

View full text Add to dashboard Cite

Developers of metamaterial-based devices in our dais face a serious problem-they can guess the properties of metamaterial itself only by analyzing the overall parameters of the complete device. As such constructions are periodical metal-dielectric structures, the standard methods of their permittivity and permeability measurement cannot be implemented. In this paper a methodology of metamaterial effective permittivity and permeability determination, based on their complex reflecting and transmitting coefficient measurement, is suggested. The base of the presented algorithm is evaluations, shown here, which determine the dependence of dielectric parameters of the sample under test on its measured S-parameters. For practical measurement some constructions of measuring tools, which allow metamaterial parameter determination in case of using longitudinal electromagnetic wave with vertical and horizontal polarization of electric field and normally incident wave, are suggested. A form of realization and a band, in which measurements can be provided, are presented for each type of measuring tools. An advantage of all constructions is that they are closed structures and do not feel the influence of surroundings. The schema of connecting the measuring tools to a vector network analyzer is detail reviewed. A question of measuring schema element influence on the accuracy of parameter determination is discussed separately. As the constructions of measuring tools do not allow direct measuring device calibration, a method of compensation of their influence on the measured parameters accuracy, based on the mathematical processing of the obtained data, is suggested. Practical results of metamaterial sample effective permittivity and permeability determination, made using the described algorithm and two different measuring tools, are shown. The made experiment has shown a good correlation of the obtained data between each other and with the computed parameters of the sample. So the paper presents the detailed description of the methodology of metamaterial effective permittivity and permeability determination, with the help of measuring their complex reflecting and transmitting coefficient, some measuring tool constructions are suggested, which allow practical measurements, measuring circuit calibration methods are described. The presented experimental data confirm that the suggested algorithm can be used.

show abstract

Complex permittivity measurements at variable temperatures of low loss dielectric substrates employing split post and single post dielectric resonators

Cited by 16 publications

References 10 publications

Dielectric Properties of Textile Materials: Analytical Approximations and Experimental Measurements—A Review

Dielectric Properties of Textile Materials: Analytical Approximations and Experimental Measurements—A Review

Microwave Measurements of Electromagnetic Properties of Materials

A Methodology of Metamaterial Effective Permittivity and Permeability Value Measurement

Contact Info

Product

Resources

About