Efficient Method of Moments for Numerical Analysis of Antennas With Variable Load Impedance
Efficient Method of Moments for Numerical Analysis of Antennas With Variable Load Impedance
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DOI：
10.1109/tap.2020.2985979
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发表时间：
2020-12
影响因子：
5.7
通讯作者：
K. Konno;Q. Yuan;Qiang Chen;Kei Yokokawa;J. Goto;Toru Fukawasa
中科院分区：
文献类型：
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作者：
K. Konno;Q. Yuan;Qiang Chen;Kei Yokokawa;J. Goto;Toru Fukawasa
提出了一种基于矩量法的变阻抗天线数值分析方法。该方法将变负载阻抗及其电流等效为电压源。该方法直接由天线的空载全导纳矩阵和对应于可变负载阻抗的阻塞阻抗矩阵求出了可变负载阻抗天线的电流分布。所提出的方法是相当计算效率，因为逆的全阻抗矩阵的天线是不必要的，当它们的负载阻抗变化。此外，该方法不包括任何近似，其结果显示出完美的协议与全波分析。所提出的方法的数值结果进行了比较，与传统的矩量法使用我们的内部代码和它的性能进行了证明。
A computationally efficient method which is based on the method of moments (MoM) for numerical analysis of antennas with variable load impedance is proposed. The proposed method deals with both of the variable load impedance and its current as equivalent voltage source. Current distribution of antennas with the variable load impedance is obtained directly from their unloaded full-admittance matrix and the block impedance matrix corresponding to the variable load impedance. The proposed method is quite computationally efficient because inversion of the full-impedance matrix of the antennas is unnecessary when their load impedance varies. Moreover, the proposed method does not include any approximation and its result shows perfect agreement with that of the full-wave analysis. Numerical results of the proposed method are compared with those of conventional MoM using our in-house code and its performance is demonstrated.