Journal ArticleDOI
Measurement of dielectric constant using a microstrip ring resonator
P.A. Bernard,J.M. Gautray +1 more
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TLDR
In this paper, an approach for measuring the permittivity of dielectric materials by means of a microstrip ring resonator is presented, which is used in conjunction with the variational calculation of the line capacitance of a multilayer microstriplike transmission line.Abstract:
An approach for measuring the permittivity of dielectric materials by means of a microstrip ring resonator is presented. The method is used in conjunction with the variational calculation of the line capacitance of a multilayer microstriplike transmission line to compute the effective permittivity and hence the resonant frequency of the ring. The results are compared with measurements made in X-band waveguide cavity-by-cavity perturbation techniques and tend to confirm that microstrip resonators can be used for dielectric measurements. However, for materials having a large dielectric constant, comparative results seem to diverge rapidly. >read more
Citations
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Journal ArticleDOI
Material Characterization Using Complementary Split-Ring Resonators
TL;DR: A microwave method based on complementary split-ring resonators (CSRRs) is proposed for dielectric characterization of planar materials and eliminates the extensive sample preparation procedure needed in resonance-based methods.
Book
Measuring the Permittivity and Permeability of Lossy Materials: Solids, Liquids, Metals, Building Materials, and Negative-Index Materials
Richard G. Geyer,Chriss A. Grosvenor,Christopher L. Holloway,Michael D. Janezic,Robert T Johk,Pavel Kabos,James R. Baker-Jarvis +6 more
TL;DR: In this paper, the authors provide a comprehensive guide for researchers in the area of measurements of lossy dielectric and magnetic materials with the intent of assembhng the relevant information needed to perform and interpret Dielectric measurements on lossy materials in one place.
Journal ArticleDOI
Noncontact Measurement of Complex Permittivity and Thickness by Using Planar Resonators
TL;DR: In this article, a single-compound triple complementary split-ring resonator (SC-TCSRR) was used to determine the complex permittivity and thickness of a material under test (MUT).
Journal ArticleDOI
A functionalized THz sensor for marker-free DNA analysis
TL;DR: A novel resonant THz sensor for the label-free analysis of DNA molecules that allows the direct detection of DNA-probe molecules at functionalized electrodes via hybridization and can be extended to a parallel analysis of multiple DNA sequences.
Journal ArticleDOI
Microstrip ring resonator for soil moisture measurements
Kamal Sarabandi,E.S. Li +1 more
TL;DR: A microstrip ring resonator is proposed for the accurate measurement of soil dielectric constant and it is shown that the wide dynamic range of the measured quantities provides excellent accuracy in the dielectrics constant measurement.
References
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Journal ArticleDOI
Transmission-Line Properties of Parallel Strips Separated by a Dielectric Sheet
TL;DR: In this article, the shape ratio and the effective filling fraction of a sheet of dielectric material are computed in terms of exponential and hyperbolic functions, respectively, for a transmission line made of a symmetrical pair of strip conductors.
Journal ArticleDOI
Variational Method for the Analysis of Microstrip Lines
Eikichi Yamashita,Raj Mittra +1 more
TL;DR: In this article, a method for computing the line capacitance of a microstrip line based on the application of Fourier transform and variational techniques is reported, where the characteristic impedance, guide wavelength, and the surface potential distribution in the micro-strip line are obtained for a range of structure parameters and the dielectric constant.
Journal ArticleDOI
Transmission-Line Properties of Parallel Wide Strips by a Conformal-Mapping Approximation
TL;DR: In this article, a conformal mapping procedure is proposed for a transmission line made of a symmetrical pair of strip conductors, face-to-face, or a single strip parallel to a ground plane.
Journal ArticleDOI
Perturbation theory of resonant cavities
TL;DR: In this paper, a detailed derivation of the perturbation formula for the frequency shift on introducing a sample of ferrite or dielectric material into a resonant cavity is given.
Journal ArticleDOI
Variational Method for the Analysis of Microstrip-Like Transmission Lines
TL;DR: In this paper, a theoretical analysis of a shielded double-layer microstrip line is presented based on a variational calculation of the capacitance in the Fourier-transformed domain and on the charge density distribution as a trial function.