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首页> 外文期刊>IEEE Transactions on Magnetics >Using model-based parameter estimation to increase the efficiency of computing electromagnetic transfer functions
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Using model-based parameter estimation to increase the efficiency of computing electromagnetic transfer functions

机译:使用基于模型的参数估计来提高计算电磁传递函数的效率

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摘要

Two main ideas are introduced: (1) the use of model-based parameter estimation based on rational function approximations, which reduces the number of frequencies at which solutions or samples are required; (2) a sampling approach that uses frequency derivatives of the response and a novel analytical technique based on differentiating the moment method impedance equation, which provides derivative information in a time proportional to N/sup 2/ in contrast with the N/sup 3/ dependence in solving the original problem. Antenna input admittances are modeled using frequency samples and derivatives. The rational function model is shown to offer a large advantage over polynomial interpolation of a frequency response. Application of the frequency-derivative approach is demonstrated for problems having well-defined resonances such as a dipole antenna, and for more challenging problems having narrow resonances.
机译:引入两个主要思想:(1)基于有理函数逼近的基于模型的参数估计的使用,这减少了需要解或样本的频率数量; (2)使用响应的频率导数的采样方法和基于微分矩法阻抗方程式的新颖分析技术,该技术在与N / sup 2 /成比例的时间内提供与N / sup 3 /成比例的导数信息解决原始问题的依赖性。使用频率样本和导数对天线输入导纳进行建模。显示出有理函数模型比频率响应的多项式插值法具有更大的优势。对于具有明确定义的谐振(例如偶极天线)的问题以及具有较窄谐振的更具挑战性的问题,已经证明了频率导数方法的应用。

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