部分填充雙各向異性介質(zhì)的圓柱形波導(dǎo)中混合模特性研究
STUDY ON THE CHARACTERISTICS OF HYBRID MODES IN CIRCULAR WAVEGUIDES PARTIALLY FILLED WITH BIANISOTROPIC MEDIUM
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摘要: 本文首先引入一種新型雙各向異性波導(dǎo)結(jié)構(gòu);給出了這類(lèi)復(fù)雜波導(dǎo)中橫向場(chǎng)分量的縱向場(chǎng)表示式以及縱向場(chǎng)分量滿足的一組耦合模方程;重點(diǎn)分析了具有不同電磁參數(shù)的雙各向異性介質(zhì)中心加載時(shí),金屬圓柱形波導(dǎo)中混合模的分裂效應(yīng),色散特性和場(chǎng)分布。結(jié)果表明,由于多個(gè)電磁參數(shù)的引入,雙各向異性波導(dǎo)具有一般各向異性和雙各向同性波導(dǎo)結(jié)構(gòu)所沒(méi)有的新奇特性。Abstract: A new kind of bianisotropic waveguide structure is introduced. In such complex waveguide, the transverse field components can also be expressed in terms of their longitudinal electric and magnetic fields, and a set of coupled mode equations is derived. The bifurcation effect, dispersion characteristics as well as field distribution of hybrid modes in bianisotropic central loaded-metallic circular waveguide are investigated. The numerical results show that because of the introducing of many electromagnetic parameters, bianisotropic waveguides possess some features, which can be used to design novel microwave, millimeter wave and optical devices.
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