非均勻介質(zhì)填充波導(dǎo)本征值問題的有限元分析
THE FINITE-ELEMENT ANALYSIS OF EIGENVALUEPROBLEM OF WAVEGUIDES FILLED WITHINHOMOGENEOUS DIELECTRICS
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摘要: 本文討論了用有限元法求解非均勻介質(zhì)填充波導(dǎo)本征值問題的具體過程。給出了有關(guān)的計(jì)算公式和程序。作為例子,對(duì)條形介質(zhì)填充矩形波導(dǎo)主模場(chǎng)結(jié)構(gòu)的分析和色散特性的計(jì)算,獲得了與解析解十分一致的結(jié)果,從而證實(shí)了所述程序的可靠性。
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關(guān)鍵詞:
Abstract: The concrete procedure using finite-element method to solve the eigenvalue problem of waveguides filled with inhomogeneous dielectrics is discussed. The relative formula and programs are given. For an example, the field structure analysis and calculation of the dispersion feature for dominant mode of the dielectric slab loaded rectangular waveguide have been completed. The rather consistent results with analytical solution are obtained and the reliability of the programs is verified. -
S. Ahmed, Electronics Letters, 4(1968), 387.[3]Wei-gan Lin, IEEE on MTT, MTT-28(1980), 339.[4]徐善駕,電子學(xué)報(bào),10(1982), 39.[5]徐善駕,電子學(xué)通訊,4(1982), 222. -
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