Journal ArticleDOI
Study of whispering gallery modes in anisotropic single-crystal dielectric resonators
TLDR
In this article, the Rayleigh-Ritz method and the finite element method nongenerating spurious solutions are employed for analysis of whispering gallery modes (WGMs) in cylindrical single-crystal anisotropic dielectric resonators.Abstract:
The Rayleigh-Ritz method and the finite element method nongenerating spurious solutions are employed for analysis of whispering gallery modes (WGMs) in cylindrical single-crystal anisotropic dielectric resonators. These methods allow accurate computation of the resonant frequencies, the Q-factors (depending on the dielectric and on the conductor losses), and the electromagnetic field distributions for all WGMs in the presence of additional elements like metal shields, MIC substrate, or supports. Different families of modes are studied both theoretically and experimentally. The mode coupling phenomenon is investigated. A WGM single-crystal quartz resonator is presented having an unloaded Q-factor greater than 30000 at about 100 GHz, including radiation and dielectric losses. >read more
Citations
More filters
Journal ArticleDOI
Low-loss dielectric ceramic materials and their properties
TL;DR: In this paper, the data for all reported low-loss microwave dielectric ceramic materials are collected and tabulated and the table of these materials gives the relative permittivity, quality factor, temperature variation of the resonant frequency, crystal structure, sintering temperature, measurement
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
Traceable 2-D Finite-Element Simulation of the Whispering-Gallery Modes of Axisymmetric Electromagnetic Resonators
TL;DR: In this article, a software package for solving partial-differential-equations (PDEs), as based on the finite-element method, can be configured to efficiently calculate the frequencies and fields of the whispering-gallery (WG) modes of axisymmetric dielectric resonators.
Journal ArticleDOI
Use of whispering-gallery modes for complex permittivity determinations of ultra-low-loss dielectric materials
TL;DR: In this paper, the relationship between resonant frequencies, dimensions of the resonant structure, and permittivity of the sample under test is calculated with a radial mode-matching technique.
Journal ArticleDOI
Traceable 2D finite-element simulation of the whispering-gallery modes of axisymmetric electromagnetic resonators
TL;DR: In this article, a software package for solving partial-differential-equations (PDEs), as based on the finite element method (FEM), can be configured to calculate, efficiently, the frequencies and fields of the whisperinggallery (WG) modes of axisymmetric dielectric resonators.
References
More filters
Journal ArticleDOI
Resonant Modes of a Dielectric Rod Resonator Short-Circuited at Both Ends by Parallel Conducting Plates
Yoshio Kobayashi,S. Tanaka +1 more
TL;DR: In this paper, a generalized study for the resonant modes of a dielectric rod resonater placed between two parallel conducting plates is presented, where the cutoff conditions and dispersive properties of the resonator are investigated.
Journal ArticleDOI
Resonant frequencies of higher order modes in cylindrical anisotropic dielectric resonators
Michael E. Tobar,Anthony Mann +1 more
TL;DR: In this paper, the frequency of the lowest order mode in a cylindrical isotropic dielectric is extended to higher order modes in a anisotropic crystal, and four different axial match equations are derived depending on whether they are quasi TE or quasi TM, and have an odd or even axial mode number.
Journal ArticleDOI
Whispering gallery dielectric resonator modes for W-band devices
Dominique Cros,P. Guillon +1 more
TL;DR: In this article, a planar millimeter-wavelength whispering gallery dielectric resonator (DR) was used for the design of W-band directional filters and power combiners.
Journal ArticleDOI
Electromagnetic Whispering Gallery Modes in a Dielectric Rod
TL;DR: In this paper, it was shown that some of the general coupled electromagnetic modes in a large dielectric cylinder are of a whispering gallery type, which has the property that their energy is mainly confined to the region near the boundary.
Journal ArticleDOI
A Mixed Finite Element Formulation for Microwave Devices Problems. Application to MIS Structure
M. Aubourg,P. Guillon +1 more
TL;DR: In this paper, a mixed finite element formulation for analyzing the propagation characteristics of lossy or dissipative waveguides is presented, where the equations are expressed in terms of the transverse electr...
Related Papers (5)
Resonant frequencies of higher order modes in cylindrical anisotropic dielectric resonators
Michael E. Tobar,Anthony Mann +1 more