Journal ArticleDOI
Analysis and Evaluation of a Method of Measuring the Complex Permittivity and Permeability Microwave Insulators
TLDR
In this article, a resonant post technique for characterizing dielectric and magnetic materials at microwave frequencies was proposed and experimental results of the temperature dependence of the relative dielectrics constant of nonmagnetic materials with /spl epsilon/sub r/, varying from 4 to 60, and also loss tangent measurements at room temperature.Abstract:
Theory and experimental results are presented to show the possibility of using a resonant post technique for characterizing dielectric and magnetic materials at microwave frequencies. Results of the temperature dependence of the relative dielectric constant of nonmagnetic materials with /spl epsilon//sub r/, varying from 4 to 60 are presented and also loss tangent measurements at room temperature. The complex permittivity and permeability of a number of garnet materials has also been measured with 4/spl pi//spl gamma/M/sub s/ / /spl omega/ varying from 0.25 to 0.8. The measured real part of the permeability is in good agreement with the theoretical predictions of Schlomann and the imaginary part of the permeability agrees with measurements by Green et al. on similar materials.read more
Citations
More filters
Journal ArticleDOI
Microwave Measurement of Dielectric Properties of Low-Loss Materials by the Dielectric Rod Resonator Method
Yoshio Kobayashi,M. Katoh +1 more
TL;DR: In this paper, a technique for measuring the effective surface resistance R/sub s/ of the conducting plates is proposed to allow the accurate measurement of the loss tangent tan delta.
Journal ArticleDOI
A dielectric resonator for measurements of complex permittivity of low loss dielectric materials as a function of temperature
TL;DR: In this paper, the Rayleigh-Ritz technique was employed to find a rigorous relationship between permittivity, resonant frequency, and the dimensions of the resonant structure, with relative computational accuracy of less than.
Journal ArticleDOI
The measurement of the properties of materials
TL;DR: In this paper, a review covers approximately 15 years of development in the techniques used to measure dielectric properties of materials over the frequency range 1 MHz to 1500 GHz, including time and frequency-domain methods; reflection, transmission, and resonant methods, guided and free-space methods; discrete-frequency and broad-band methods, especially Fourier transform spectroscopy.
Journal ArticleDOI
Frequency domain complex permittivity measurements at microwave frequencies
TL;DR: In this article, an overview of frequency domain measurement techniques of the complex permittivity at microwave frequencies is presented, which are divided into two categories: resonant and non-resonant ones.
Journal ArticleDOI
Effect of Glass Additions on BaO–TiO2–WO3 Microwave Ceramics
TL;DR: In this article, the effect of glass addition on the properties of BaO-TiO2-WO3 microwave dielectric material N-35, which has Q= 5900 and K= 35 at 7.2 GHz for samples sintered at 1360°C, was investigated.
References
More filters
Journal ArticleDOI
A Dielectric Resonator Method of Measuring Inductive Capacities in the Millimeter Range
B.W. Hakki,P.D. Coleman +1 more
TL;DR: In this article, a novel technique for the measurement of dielectric and magnetic properties of a homogeneous isotropic medium in the range of approximately 3 to 100 kmc is described.
Journal ArticleDOI
Microwave Measurement of High-Dielectric- Constant Materials
S.B. Cohn,K.C. Kelly +1 more
TL;DR: In this article, two precise measurement techniques are described that eliminate the effect of air gaps through the use of resonant modes, for which E/sub n/=0 at the dielectric-to-metal interface.
Journal ArticleDOI
International Comparison of Dielectric Measurements
TL;DR: In this article, three materials, fused silica, glass, and alumina, were selected for comparison based on known or expected homogeneity, isotropy, and stability, and measurements were made by the three Government laboratories (U. K., U. S. A., and Canada), both in the radio-frequency range, using capacitor-type holders either with or without an air gap, and at microwave frequencies, using either cavity-resonance methods or transmission-line impedance methods.
Journal ArticleDOI
Measurements of Dielectric Constant of Rutile (TiO2) at Microwave Frequencies between 4.2° and 300°K
TL;DR: The microwave dielectric constant k′ and loss tangent (tanδ) of rutile have been measured as a function of temperature from 4.2° to 300°K as discussed by the authors.
Journal ArticleDOI
Measurement of Small Dielectric Losses in Material with a Large Dielectric Constant at Microwave Frequencies
G. Rupprecht,R.O. Bell +1 more
TL;DR: In this paper, a method for measuring dielectric losses at microwave frequencies in materials with a large Dielectric constant is described. But this method is not suitable for the case of single crystals at 20 kMc.
Related Papers (5)
A Dielectric Resonator Method of Measuring Inductive Capacities in the Millimeter Range
B.W. Hakki,P.D. Coleman +1 more