金屬柵加載圓形介質(zhì)波導(dǎo)傳播特性的分析
ANALYSIS OF THE DISPERSION CHARACTERISTICS FOR A CYLINDRICAL DIELECTRIC WAVEGUIDE WITH PERIODIC METALLIC STRIPS
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摘要: 本文采用Galerkin方法分析了金屬柵加載圓形介質(zhì)波導(dǎo)在圓對稱模激勵時的傳播特性。在推得了嚴(yán)格的色散方程之后,給出了TE模和TM模的色散曲線,以及禁帶寬度、禁帶中心頻率和帶內(nèi)最大衰減隨金屬條帶寬度變化曲線,并討論了數(shù)值解的收斂特性。
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關(guān)鍵詞:
- 圓形介質(zhì)波導(dǎo); 金屬柵結(jié)構(gòu); 色散特性
Abstract: The dispersion characteristics of a cylindrical dielectric waveguide with periodic metallic strips are analyzed by Galerkin s method. After obtaining the rigorous dispersion equation, the dispersion curves for both TE and TM modes are calculateld. The variations of the width of the stropband, the center frequency and the maximum attenuation constant in the stop-band with the metallic strip width are given. The convergence properties of numerical solution are also discussed. -
S. T. Peng, Xu Shanjia, F. K. Schwering, Omni-Directional Dielectric Periodic Rod Antenna, 1986 IEEE-[2]APS Digest, USA, pp. 697-700.[3]Xu Shaniia, Min Jianhua, S. T. Peng, F. K. Shwering, IEEE Trans. on AP, AP-39(1991)7, 883-891.[4]Xu Shaniia, International Journal of Infrared and Milimeter Waves, 12(1989)5, 405-417.[5]K. Ogusu, IEEE Trans. on MTT, MTT-29(1981)1, 16-21.[6]L. Schmidt, T. Itoh, IEEE Trans. on MTT,MTT-28(1980)9, 981-985. -
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