月形波導(dǎo)和加片圓波導(dǎo)的解析分析
ANALYSIS OF LUNAR WAVEGUIDES AND VAINED CIRCULAR WAVEGUIDES
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摘要: 采用模匹配方法分析了月形波導(dǎo)和加片圓波導(dǎo)的截止頻率。波導(dǎo)中的場(chǎng)采用半數(shù)階Bessel函數(shù)展開(kāi)并令其滿(mǎn)足邊界條件,從而獲得截止頻率的特征方程國(guó)。根據(jù)本文所給公式可求解任意尺寸的月形波導(dǎo)、倒月形波導(dǎo)和加片圓波導(dǎo)的截止頻率,并獲得穩(wěn)定的、具有高精度的解。
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關(guān)鍵詞:
- 月形波導(dǎo); 截止頻率; 柱諧展開(kāi); 加法定理、邊界條件
Abstract: The Lunar waveguides and vained circular waveguides are analyzed by using the mode matching method. The fields in the waveguides are expressed by cylindrical harmonic expansions in which Bessel functions with half orders are involved and the boundary conditions are imposed. Characteristic equations for cutoff wave numbers for both TE and TM modes are obtained. Several waveguides of different relative dimension are calculated, and the results show high accuracy and are considerably steady. -
J. R. kuttler. IEEE Trans.on MTT, MTT-32(1984)4, 348-354.[2]J. A. Roumrliotis et al.,Radio Sci. 15(1980)5, 923-937.[3]Zhang Liyang et al., IEEE Troans. on MTT, MTT-39(1991)8, 1416-1420. -
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