FDTD结合变分法计算线天线间耦合度
Calculation of Mutual Coupling between Wire Antennas by Applying Variational Principles in FDTD
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摘要: 线天线的自阻抗、互阻抗及耦合度是工程应用中迫切需要但又很难计算准确的。该文将时域有限差分法和变分原理相结合，求解了线天线之间的互阻抗，从而得到了耦合系数。其结果与FEKO，NEC仿真均吻合良好，表明该文方法可以获得比传统FDTD计算方法更加准确的计算结果。
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关键词:
- FDTD;变分原理;互耦
Abstract: Self impedance,mutual impedance and coupling of antennas are crying out for engineering application，but they can not be easily accurately calculated. The scheme that combines variational principles and the FDTD is presented in this paper to calculate the mutual impedance of wire antennas and the coupling coefficients. Numerical results obtained here have a good agreement with that from FEKO and NEC, which validate the accuracy and efficiency of this method. -
R. F. 哈林登 著，王尔杰等译. 计算电磁场的矩量法. 北京：国防工业出版社，1981: 7475. .[2]葛德彪，闫玉波. 电磁波时域有限差分方法. 西安：西安电子科技大学出版社，2002.4: 824. .[3]Pekonen O P M, Nikoskinen K I, Goodwin S. Applying variational principles in FDTD antenna input impedance simulations[J].Microwave and Optical Technology Letters.1998, 19(6):422-3.0.CO;2-Z' target='_blank'>[4]杨娟，张玉，梁昌洪. 线天线输入阻抗的变分原理结合FDTD求解. 电波科学学报，2003，18(1): 4852. .[5]Harrington R F. Time-Hamonic Electromagnetic Fields. New York: McGraw-Hill, 1961: 348355.[6]Burke G J. Numerical Electromagnetics Code-NEC-4 Method of Moments Part II: Program Description--Theory, UCRL- MA- 109338. California: Lawrence Livermore National Laboratory, 1992. -
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