Measuring dielectric properties of microwave dielectric materials with resonance method
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Dielectric permittivity is one of the main performance parameters.For discussing the calculation of dielectric parameters of microwave dielectric material,the model of the resonant method was analyzed and based on resonance method,the system of measuring the dielectric parameters was developed.Measurement results show that measurement value agreed with reference value well.The paper also evaluated the uncertainty of the measurement result.So microwave dielectric material permittivity measurement platform in microwave frequency band was established.Keywords:
Dielectric Heating
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Here, a resonant cavity method is used to measure the complex permittivity of materials. To increase the accuracy of the result, different approaches are merged. The measurements are performed in several frequencies to both increase the result accuracy and also obtain the dispersion characteristics of the material. The comparison of the measured data and those of the data sheet shows an excellent match. This procedure may be used for measuring and categorizing different solid and liquid materials.
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The article analyzes the microwave methods for measuring the material parameters, showing their advantages and disadvantages, discussed the criteria for selecting the measurement method. The authors proposed a modification of the method of the composite dielectric resonator. The proposed method has a high sensitivity in the measurement of dielectric constant and loss.References 4, figures 6, tables 1.
Dielectric resonator
Dielectric loss
Dielectric resonator antenna
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The theory of the barrel resonator with a central rod of dielectric material is developed. The equations for resonance are derived and it is shown how this configuration can be used for the measurement of permittivity.
Rod
Microwave cavity
Dielectric resonator
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDielectric Measurement of HeptacosafluorotributylamineFielding BrownCite this: J. Am. Chem. Soc. 1953, 75, 23, 6041Publication Date (Print):December 1, 1953Publication History Published online1 May 2002Published inissue 1 December 1953https://pubs.acs.org/doi/10.1021/ja01119a505https://doi.org/10.1021/ja01119a505research-articleACS PublicationsRequest reuse permissionsArticle Views91Altmetric-Citations3LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
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This chapter elaborates the different techniques used for measuring the microwave dielectric properties. The knowledge of dielectric properties in a different frequency range is important for characterizing the dielectric materials for different practical applications. The precise measurement of the dielectric properties is essential for predicting the device performance. Several methods have been developed and employed for measuring permittivity and permeability of materials in the high-frequency region. The resonant cavity method has been used as the most accurate measurement technique. The electromagnetic interference (EMI) shielding measurements are performed by the waveguide method using a vector network analyzer. The intrinsic losses in the dielectric material can be obtained by spectroscopic methods using a combination of far-infrared and submillimeter or Terahertz (THz) spectroscopy. The microwave measurements are usually done in an air-conditioned room in order to minimize its effects and the samples should be heated in an oven to remove the moisture before starting the experiments.
Network analyzer (electrical)
Microwave cavity
Dielectric Heating
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A new technique for the measurement of the complex permittivity of dielectric substrates was developed. This method is a non-contact measurement using two dielectric resonators which support the TE016 mode. The complex permittivity is analyzed using finite element method. The nondestructive measurement of located small area in a dielectric substrate can be achieved. This paper describes some examples of measurement.
Dielectric resonator
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In this article the methods of the microwave materials parameters measuring are analyzed, the advantages and disadvantages of these methods are showed, criteria for choosing a particular method of measurement are discussed. The modification of the composite dielectric resonator's method is proposed. The proposed method has a high sensitivity in the measurement of the dielectric constant and loss.
Dielectric resonator
Dielectric loss
Dielectric resonator antenna
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Temperature coefficient
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