New method for complex permittivity measurement of dielectric materials

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New method for complex permittivity measurement of dielectric materials

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© The Institution of Electrical Engineers
Published

A novel technique for the measurement of dielectric properties of a homogeneous isotropic material is described. An accuracy better than 1% can be obtained on the permittivity and loss tangent values. The structure used is a cylindrical metallic cavity, carrying at its centre the circular cylindrical dielectric sample. The complex permittivity is deduced from the comparison between the experimental and the computed electromagnetic characteristics (frequencies, quality factors) of the resonant TE01δ mode of the dielectric resonator.

Inspec keywords: permittivity measurement; dielectric loss measurement

Other keywords: loss tangent values; complex permittivity measurement; frequencies; dielectric resonator; cylindrical metallic cavity; electromagnetic characteristics; quality factors; dielectric materials; homogeneous isotropic material; resonant T E01δ mode

Subjects: Dielectric variables measurement; Electrical instruments and techniques

References

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      • M.R. Stiglitz . Dielectric resonators: past, present and future. Microwave J. , 19 - 36
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      • B.W. Hakki , P.D. Coleman . A dielectric resonator method of measuring inductive capacities in millimeter range. IEEE Trans. , 402 - 410
    3. 3)
      • R.S. Martin , J.H. Wilkinson . Solution of symmetric and unsymmetric band equations and the calculation of eigenvectors of band matrices. Numer. Math.
    4. 4)
      • P. Guillon , Y. Garault . Accurate resonant frequencies of dielectric resonators. IEEE Trans. , 916 - 922
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