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A. L. Delitsyn 《Computational Mathematics and Mathematical Physics》2012,52(7):1055-1059
For resonance scattering by two infinitely thin barriers in a waveguide, an elementary proof is given for the existence of a frequency at which the reflection coefficient is arbitrarily low. The proof is obtained using only the method of mode matching. It turns out that the existence of resonances, which are the complex poles of the Green??s function of the scattering problem, do not need to be considered in the method. 相似文献
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A special vector functional space is defined for a weak formulation of the diffraction problem in a cone. For this space, a number of embedding theorems are proved. It is also shown that the diffraction problem is reduced to the Fredholm equation. 相似文献
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The application of the mixed finite-element method for the analysis of dispersion curves of the cylindrical waveguides with
a gradient loading is considered. The test results of the algorithm and the calculations of systems with a variable refractive
index are presented. The initiation of complex waves in layered waveguides is shown. 相似文献
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A. N. Bogolyubov A. L. Delitsyn A. G. Sveshnikov 《Computational Mathematics and Modeling》2003,14(1):64-73
Radiation conditions are posed for an electromagnetic waveguide with a nonhomogeneous filling. The existence of a solution in a certain functional class is proved. A near-zone solution is obtained. 相似文献
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A. L. Delitsyn 《Moscow University Physics Bulletin》2016,71(4):368-374
We apply the method of mixed finite elements to the junction problem for coaxial and radial waveguides. The problem is reduced to an internal boundary-value problem with nonlocal boundary-value conditions. In the low-frequency range, we compare the results of the finite-element method with the Otto relationship. 相似文献