| A new algorithm for the extraction of the surface waves for the Green's function in layered dielectrics |
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| 作者姓名： | 宋犇 洪伟 |
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| 作者单位： | SONG Ben & HONG WeiState Key Laboratory of Millimeter Waves，Southeast University，Nanjing 210096，China |
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| 摘 要： | There exist the complicated waveguide modes as well as the surface waves in the electromagnetic field induced by a horizontal electric dipole in layered lossless dielectrics between two ground planes. In spectral domain, all these modes can be characterized by the rational parts with the real poles of the vector and scalar potentials. The accurate extraction of these modes plays an important role in the evaluation of the Green's function in spatial domain. In this paper, a new algorithm based on rational approximation is presented, which can accurately extract all the real poles and the residues of each pole simultaneously. Thus, we can get all the surface wave modes and waveguide modes, which is of great help to the calculation of the spatial domain Green's function. The numerical results demonstrated the accuracy and efficiency of the proposed method.
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A new algorithm for the extraction of the surface waves for the Green's function in layered dielectrics |
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| SONG Ben & HONG WeiState Key Laboratory of Millimeter Waves,Southeast University,Nanjing ,China.A new algorithm for the extraction of the surface waves for the Green''''s function in layered dielectrics[J].Science in China(Information Sciences),2002,45(2). |
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| Authors: | SONG Ben & HONG WeiState Key Laboratory of Millimeter Waves Southeast University Nanjing China |
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| Affiliation: | SONG Ben & HONG WeiState Key Laboratory of Millimeter Waves,Southeast University,Nanjing 210096,China |
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| Abstract: | There exist the complicated waveguide modes as well as the surface waves in the electromagnetic field induced by a horizontal electric dipole in layered lossless dielectrics between two ground planes. In spectral domain, all these modes can be characterized by the rational parts with the real poles of the vector and scalar potentials. The accurate extraction of these modes plays an important role in the evaluation of the Green's function in spatial domain. In this paper, a new algorithm based on rational approximation is presented, which can accurately extract all the real poles and the residues of each pole simultaneously. Thus, we can get all the surface wave modes and waveguide modes, which is of great help to the calculation of the spatial domain Green's function. The numerical results demonstrated the accuracy and efficiency of the proposed method. |
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| Keywords: | Green's function surface waves layered dielectrics rational approximation |
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