一种计算电磁棍合微带振子上电流分布的新方法
A NEW METHOD TO DETERMINE THE CURRENT DISTRIBUTION ON THE EMC DIPOLE
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摘要: 微带天线振子上电流分布以及微带天线阵中单元间相互耦合分析是微带天线及其阵列分析的关键,由于此分析过程涉及到Sommerfeld积分,使得微带天线上电流分布的求解十分烦琐、费时。为此,本文提出了一种基于Chebyshev多项式展开的方法来计算Sommerfeld积分,进一步求出微带天线上电流分布。结果表明,这种方法在保持较高计算精度的同时大大地提高了计算效率。Abstract: The determination of the current distribution on the dipoles of microstrip antennas and the coupling between elements of arrays are especially important for the analysis of microstip antennas and arrays.Unfortunately,the calculation is tedious and time-consuming because of the existing of the Sommerfeld integrals.A new method is proposed in this paper to calculate the current distribution by using Chebyshev decomposition to deal with the sommerfeld integrals.The calculation results show that the presented method greatly improves the computing efficiency while retaining high accuracy.
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李世智,著.电磁辐射与散射问题的矩量法.北京:电子工业出版社,第二章.[2]钟顺时.微带天线原理.西安:西安电子科技大学出版社,1991, 75-125.[3]Katehi P B, Alexopoulos N G. Modeling of electromagnetically coupled microstrip antennas-The printed strip dipole, IEEE Trans. on AP. 1984, AP-32(11): 1179-1185.[4]郭敦仁编.数学物理方法.北京:人民教育出版社,1979,第7章.[5]Gradshteyn I S, Ryzhik I M. Table of Integrals, Series of Products, New York: Academic Press. 1980,600-690.[6]Rana I E, Alexopoulos N G. Current distribution and input impedance of printed dipoles. IEEE Trans. on AP. 1981, AP-29(1): 99-105. -
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