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任意细线结构瞬态响应的高效求解
王芳
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将时域电场积分方程法和普朗尼方法结合，求解了任意细线结构的瞬态电磁响应问题。时域电场积分方程法用以计算早期响应，普朗尼方法从早期响应中提取极点，得到后期响应。避免了传统时域积分方程在后期响应求解的不稳定性，提高了瞬态响应求解的效率。以线天线、环天线为例，计算了在高斯脉冲激励下的电流响应。
关 键 词 时域积分方程; 普朗尼方法; 瞬态响应; 细线结构
Abstract Prony’s method has been combined with time domain integral equation (TDIE) to solve transient response from arbitrary thin wire structure. Early-time response is calculated by TDIE. Prony’s method is used to extract the pole from early-time response, the late-time response can be calculated efficiently. The present method avoids tedious computations in conventional TDIE, the efficiency of solving the transient response is speed up greatly. The current distributions on conducting straight wire and a circular loop excited by a Gaussian pulse are computed.
Key words time domain integral equations; Prony’s method; transient response; thin wire structure
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