Permittivity Measurement of Ferroelectric Thin Film Based on CPW Transmission Line

Wu, Yunqiu; Tang, Zongxi; Xu, Yuehang; He, Xiaoli; Zhang, B.

doi:10.1163/156939308784150272

Cited by 14 publications

(10 citation statements)

References 6 publications

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“…The N th layer is unbounded in the zdirection (Region N is an infinite dielectric half space). The incident and reflected magnetic fields inside the parallel-plate waveguide are given respectively as (2) where …”

Section: Termination By An Infinite Half Spacementioning

confidence: 99%

“…Knowing these properties precisely enables scientists and engineers to use the appropriate materials for intended applications, such as the design of ferroelectrics [1,2], ceramics [3] and so forth. Understanding how dielectric material properties vary at frequencies above 1 GHz is especially important and challenging in the new areas of interest such as propagation modelling in wireless communications [4,5], aerospace ice-detection [6], radar detection of buried objects which is influenced by soil characteristics [7][8][9][10], and biomedical systems such as in the detection of cancer [11][12][13][14][15][16], and diagnosis of the functional conditions of biological tissues [17,18], where accurate data of dielectric properties is critically required.…”

Section: Introductionmentioning

confidence: 99%

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An Improved Method for Microwave Nondestructive Dielectric Measurement of Layered Media

Zhang¹,

Tan²,

Tan³

2008

PIER B

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Abstract-This paper presents an improved method for microwave nondestructive dielectric measurement of layered media using a parallel-plate waveguide probe. The method bases on measuring the S parameter S 11 or reflection coefficient from the N -layer media over the range of 1 to 10 GHz. Formulation for the aperture admittance is presented which allows the solving of the inverse problem of extracting the complex permittivity for two cases of the media, (1) one that terminates into an infinite half-space, (2) one that terminates into a sheet conductor. Our theoretical analysis allows the study of the effects of air gaps and slab thickness on the probe measurements. Through numerical simulations, the ability to use the proposed method for dielectric spectroscopy and thickness evaluation of layered media is demonstrated.

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Section: Termination By An Infinite Half Spacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Improved Method for Microwave Nondestructive Dielectric Measurement of Layered Media

Zhang¹,

Tan²,

Tan³

2008

PIER B

View full text Add to dashboard Cite

show abstract

“…With increasing utilization of different materials, including composite materials, there is a growing industrial demand for dielectric characterization of these materials for design, manufacturing, and quality control purposes in industries such as civil, aerospace, electronics, chemical, etc. [1][2][3][4][5][6][7][8]. Many factors such as the frequency range, required measurement accuracy, sample size, state of the material (liquid, solid, powder and so forth), destructiveness and non-destructiveness, contacting and non-contacting, etc.…”

Section: Introductionmentioning

confidence: 99%

Permittivity Determination of Fresh Cement-Based Materials by an Open-Ended Waveguide Probe Using Amplitude-Only Measurements

Hasar¹

2009

PIER

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Abstract-An open-ended waveguide probe has been adapted for complex permittivity determination and hence mechanical property inspection of cement-based materials. The probe uses amplitude-only reflection measurements at different frequencies for this goal, which is suitable for industrial based applications when cost and ease of use are important considerations. We have derived expressions by taking into account of the wave-material interaction. The reference plane for measurements is set inside the waveguide to measure solely the reflected signal of the dominant mode. It is shown that the measurement results are in good agreement with the theory.

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“…However, this system presents several drawbacks in the case of solid materials with low losses, such as some kind of marbles [3][4][5][6][7][8][9][10]. The measurement is indeed sensitive to the MUT surface roughness and the presence of local defects, such as voids or grains, has a strong influence on the measurement accuracy.…”

Section: Introductionmentioning

confidence: 99%

An Adaptive Cavity Setup for Accurate Measurements of Complex Dielectric Permittivity

Addamo¹,

Virone²,

Vaccaneo³

et al. 2010

PIER

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Abstract-In order to enhance the accuracy of the complex permittivity data employed in Ground Penetrating Radar (GPR) techniques, an adaptive cavity setup is presented. The use of moveable walls permits to relax the mechanical constraints on the sample dimensions so that it can be employed also in complicate measurement condition as, for example, in the case of wet samples. Moreover, exploiting the cavity resonance phenomenon, low loss materials, such as some type of marbles, can be accurately evaluated. The numerical characterization, the parametric analyses and the L-band measurement results show the validity and the reliability of this configuration.

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Permittivity Measurement of Ferroelectric Thin Film Based on CPW Transmission Line

Cited by 14 publications

References 6 publications

An Improved Method for Microwave Nondestructive Dielectric Measurement of Layered Media

An Improved Method for Microwave Nondestructive Dielectric Measurement of Layered Media

Permittivity Determination of Fresh Cement-Based Materials by an Open-Ended Waveguide Probe Using Amplitude-Only Measurements

An Adaptive Cavity Setup for Accurate Measurements of Complex Dielectric Permittivity

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