An efficient volume integral-equation approach for characterization of lossy dielectric materials
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AbstractAn efficient volume integral-equation approach for characterizing lossy dielectric materials in the Courtney holder type of measurement environment is proposed. Utilizing the parallel-plate dyadic Green's functions and the volume equivalence theorem, an effective electric-field integral equation is developed for azimuthally invariant mode analysis of a parallel-plate dielectric resonator. Volumetric cylindrical pulse basis functions and a point-matching moment-method procedure are used to formulate an eigenvalue problem. A novel singularity treatment, which uses a Bessel function identity, is presented. In an iterative permittivity searching process, perturbation of the eigenmatrix equation involves solely recomputing a diagonal matrix, which is a function of permittivity only. Therefore, the efficiency of the searching process is greatly increased. Two numerical examples are provided to illustrate the applicability and validity of the proposed approach to the evaluation of dielectric constant, loss tangent, and surface resistance of the parallel plates.
All Author(s) ListLui ML, Wu KL
Name of ConferenceIEEE MTT-S International Microwave Symposium
Start Date of Conference06/06/2004
End Date of Conference11/06/2004
Place of ConferenceFt Worth
Journal nameIEEE Transactions on Microwave Theory and Techniques
Volume Number52
Issue Number11
Pages2464 - 2473
LanguagesEnglish-United Kingdom
Keywordscomplex permittivity; dielectric resonator (DR); dyadic Green's functions; method of moments (MoM); volume integral equation (VIE)
Web of Science Subject CategoriesEngineering; Engineering, Electrical & Electronic; ENGINEERING, ELECTRICAL & ELECTRONIC

Last updated on 2020-30-11 at 00:59