NURBS建模电大平台附近天线受扰方向图的分析

doi:10.3969/j.issn.1001-2400.2011.04.022

J4 ›› 2011, Vol. 38 ›› Issue (4): 124-128.doi: 10.3969/j.issn.1001-2400.2011.04.022

• Original Articles • Previous Articles Next Articles

Analysis of antenna around electrically large NURBS platform with improved MoM-PO method

HUANG Kai¹;HE Zhili¹;ZHANG Hongwei¹;LIANG Changhong¹;SU Hang²

(1. Science and Technology on Antenna and Microwave Lab., Xidian Univ., Xi'an 710071， China;
2. School of Info. Sci. and Eng., Lanzhou Univ., Lanzhou 730000， China)

Received:2010-05-20 Online:2011-08-20 Published:2011-09-28
Contact: HUANG Kai E-mail:huangkai841025@126.com

Abstract

Abstract:

The conventional MoM-PO (Method of Moments-Physics Optics) method based on NURBS (None Uniform Rational B Spline) modeling is implemented by modifying the voltage matrix, the problem of iterative misconvergence may appear. To solve this problem, a method of modifying the impedance matrix is presented to avoid the potential misconvergence. Ludwig integral combining with SPM is utilized to calculate the integral of PO currents on Bezier surfaces. It overcomes the invalidity in the conventional method while keeping its efficiency. The comparison of the results obtained by this method with the ones in the literature and from pure MoM shows feasibility and accuracy of the present method.

Key words: NURBS, MoM-PO, Ludwig integral, electrically large platform

HUANG Kai;HE Zhili;ZHANG Hongwei;LIANG Changhong;SU Hang. Analysis of antenna around electrically large NURBS platform with improved MoM-PO method[J].J4, 2011, 38(4): 124-128.

References

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[2]	HUANG Kai;HE Zhi-li;LIANG Chang-hong. Improved NURBS-PO method for analyzing the disturbed pattern of an antenna around an electrically large platform [J]. J4, 2010, 37(5): 879-883.
[3]	LEI Ji-zhao;LIANG Chang-hong;ZHANG Yu. Solving electrically large EM problems using parallel FDTD and HP blade server [J]. J4, 2009, 36(5): 846-850.
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[6]	CHEN Ming;ZHANG Yu;WANG Nan;LIANG Chang-hong. Study of the shadowing technique in the NURBS-PO method [J]. J4, 2006, 33(3): 430-432.

Analysis of antenna around electrically large NURBS platform with improved MoM-PO method

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