Broad-Band Analysis of a Coaxial Discontinuity Used for Dielectric Measurements

Belhadj-Tahar, N.; Fourrier-Lamer, Arlette

doi:10.1109/tmtt.1986.1133342

Cited by 100 publications

(75 citation statements)

References 3 publications

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“…For the TEM mode in the uniformly filled coaxial waveguides, the field components E r and H φ can be expressed as below [3,4]:…”

Section: Determination the Modal Field Patternsmentioning

confidence: 99%

“…COAXIAL discontinuity structures are widely used as an element of microwave devices, and commonly used in the permeability and/or permittivity measurement for materials [1][2][3][4][5][6]. This kind of structures are usually analyzed in the frequency domain by using mode matching method [3,4,7,8], full-wave spectral-domain method [9], finite element method [5,10], or frequency domain transmission line matrix method [6], or in the time domain by using FDTD method [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…This kind of structures are usually analyzed in the frequency domain by using mode matching method [3,4,7,8], full-wave spectral-domain method [9], finite element method [5,10], or frequency domain transmission line matrix method [6], or in the time domain by using FDTD method [11][12][13][14]. Although the numerical methods such as finite element method and FDTD can deal with complex irregular structures with more flexibility, for the structures considered in this paper, it can be expected that the mode matching method has more advantages since it conforms closely to physical reality [7] and apparently has much less unknown variables.…”

Section: Introductionmentioning

confidence: 99%

“…Although the numerical methods such as finite element method and FDTD can deal with complex irregular structures with more flexibility, for the structures considered in this paper, it can be expected that the mode matching method has more advantages since it conforms closely to physical reality [7] and apparently has much less unknown variables. For some specific axisymmetrical coaxial discontinuity structures, mode matching method has been successfully applied [3,4,8]. It is the purpose of this paper to present a general approach based on the mode matching method to deal with this kind of coaxial discontinuity structures.…”

Section: Introductionmentioning

confidence: 99%

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Application of Mode Matching Method to Analysis of Axisymmetric Coaxial Discontinuity Structures Used in Permeability and/or Permittivity Measurement

Huang¹,

Zhang²

2007

PIER

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Abstract-This paper presents a mode matching method to analyze axisymmetric coaxial discontinuity structures, commonly used in the permeability and/or permittivity measurement. By performing the mode matching procedures at all discontinuity interfaces, a set of general simultaneous equations are derived, which can be easily solved. The s parameters and field distribution in the structures are readily obtained from the solution to the simultaneous equations. As a preliminary preparation for the mode matching method, the propagation constants of all the sections in the structure have to be solved. A one-dimensional frequency domain finite difference method is presented in this paper to efficiently solve the propagation constants for the multi-layered axisymmetric structures. Numerical examples show that the results obtained from the method in this paper are in good agreement with those from other methods in the published literature papers, and the method presented here has much higher efficiency.

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“…For the TEM mode in the uniformly filled coaxial waveguides, the field components E r and H φ can be expressed as below [3,4]:…”

Section: Determination the Modal Field Patternsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Application of Mode Matching Method to Analysis of Axisymmetric Coaxial Discontinuity Structures Used in Permeability and/or Permittivity Measurement

Huang¹,

Zhang²

2007

PIER

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“…In this present work, the coaxial line is terminated with cylindrical waveguide. There are quite a few mathematical models for the coaxial line terminated in cylindrical waveguide [8,[14][15][16]. Notable among them are the distinctive works by Risley [15,16].…”

Section: Introductionmentioning

confidence: 99%

Analytical Models for Determination of Complex Permittivity

Adopley¹,

Dudley²,

Taherian³

1997

PIER

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Rational Analysis of Layered Oxide Power Performance Limitations in a Lithium Battery Application

Cabelguen

Peralta

Cugnet

et al. 2017

Advanced Sustainable Systems

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The purpose of this paper is to rationalize material geometry contribution on the electrochemical performances of four model LiNi1/3Mn1/3Co1/3O2 materials. A methodology combining the exhaustive microstructural characterization and the careful study of each component of the electrochemical process is established to discuss the limiting factors of power performances. Intuitions based on the exhaustive microstructural characterization are first confronted with the study, by cyclic voltammetry, of the rate‐limiting step of the electrochemical process. Depending on the microstructure, diffusion controlled electrochemical behavior is observed, which is expected in Li‐ion battery, and also charge‐transfer limitation even at extremely high scan rates. This second behavior surprisingly occurs for high surface area materials. Possible electronic limitations in these materials are explored using broadband dielectric spectroscopy. This unique technique shows that flake‐shaped, highly anisotropic, crystallites facilitate electronic motion at all scale levels compared to cuboidal crystallites. Charge‐transfer limitations are not electronic, but come from the material interface contribution to the electrochemical process. Numerical simulations allow quantifying the actual electroactive surface area. Between 15% and 30% of the BET surface area, corresponding to the thickness of the crystallites, are actually active.

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Broad-Band Analysis of a Coaxial Discontinuity Used for Dielectric Measurements

Cited by 100 publications

References 3 publications

Application of Mode Matching Method to Analysis of Axisymmetric Coaxial Discontinuity Structures Used in Permeability and/or Permittivity Measurement

Application of Mode Matching Method to Analysis of Axisymmetric Coaxial Discontinuity Structures Used in Permeability and/or Permittivity Measurement

Analytical Models for Determination of Complex Permittivity

Rational Analysis of Layered Oxide Power Performance Limitations in a Lithium Battery Application

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