基于NURBS建模技术的迭代MoM-PO方法分析 电大尺寸平台天线方向图

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电子学报 ›› 2007, Vol. 35 ›› Issue (3) : 392-395.

论文

基于NURBS建模技术的迭代MoM-PO方法分析电大尺寸平台天线方向图

陈铭, 王楠, 梁昌洪

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Analysis of Antenna Around Electrically Large NURBS Surface with Iterative MoM-PO Method

CHEN Ming, WANG Nan, LIANG Chang-hong

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摘要

本文采用基于非均匀有理B样条(NURBS,Non-Uniform Rational Bezier Spline)曲面建模技术的物理光学方法结合矩量法(Method of Moments-Physical Optics)分析位于电大尺寸平台附近天线的辐射方向图.文章推导了基于有理贝齐尔曲面的物理光学散射场计算公式.采用驻相法计算有理贝齐尔曲面上的物理光学感应电流积分.利用物理光学散射场迭代矩量法区域的电压矩阵.通过与传统平面片建模的物理光学方法的计算结果对比,说明本文方法的有效性和优点.

Abstract

The hybrid iterative method of moments and physical-optics method of moments (MoM-PO) is used to analyze radiation pattern of antenna around an electrically large platform modeled with non-uniform rational B-spline (NURBS) surfaces.The formula of scatter field based on NURBS surface is deduced.Stationary phase method (SPM) is applied for the integral of induced current on the rational Bezier surface.Results obtained by this method and by MoM-PO based on triangle facet model agree well while the former is more efficient in execution time.

导出引用

陈铭, 王楠, 梁昌洪. 基于NURBS建模技术的迭代MoM-PO方法分析电大尺寸平台天线方向图[J]. 电子学报, 2007, 35(3): 392-395.

CHEN Ming, WANG Nan, LIANG Chang-hong. Analysis of Antenna Around Electrically Large NURBS Surface with Iterative MoM-PO Method[J]. Acta Electronica Sinica, 2007, 35(3): 392-395.

中图分类号： O441.4