Efficient analyzing method for superfine line structure object electromagnetic property

Abstract

The invention provides an efficient analyzing method for a superfine line structure object electromagnetic property, and belongs to the field of analyzing of a computational electromagnetic moment method. A section wavelet serves as a primary function in the moment method, fast wavelet transform is used, a sparse matrix can be obtained through calculation, and therefore the defects caused by a dense matrix are overcome, and a effect more accurate and efficient than that of traditional analyzing can be obtained. The method comprises the steps that firstly, an object is placed in an appropriate geometry coordinate system, and an electric field integral equation to which the surface current conforms is listed; secondly, the section wavelet serves as the primary function to carry out expansion on an unknown current; thirdly, geometry mapping is established and is substituted into an original matrix equation; fourthly, the matrix equation is solved; fifthly, the current distribution is obtained through solving, and the scattering problem is dealt with to obtain far field distribution. The method can serve as an efficient and accurate means for studying a wire antenna, and plays a significant role.

Description

technical field [0001] The invention relates to the field of computational electromagnetic moment method analysis, in particular to fast and accurate electromagnetic characteristic analysis of ultra-thin wire structure objects, such as wire antennas with arbitrary structures. technical background [0002] In antenna theory and engineering, the analysis and comprehensive design of wire antennas is a very important part, because modern antenna engineering is developed from wire antennas. On the basis of it, the analysis and synthesis of various new antennas Design is realized and developed. The electric field integral equation of ultra-thin wire structure objects is established based on the Pocklington integral equation, and its current distribution characteristics are usually analyzed by the method of moments. [0003] The idea of ​​the basic method of moments is to discretize the equation into a system of algebraic equations, and obtain the solution of the original equation...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem in the prior art that periodic wavelets can only be applied to closed structures and the grid quality obtained by three-dimensional gridding is very poor, and disclose an efficient analysis method for the electromagnetic characteristics of ultra-thin line structure objects, using interval wavelets As a tool for solving electromagnetic problems in open curved thin-wire structured objects

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