A quasi‐static approach based on lumped equivalent circuits is presented and investigated for an efficient numerical analysis of miniature RF circuits. In this approach, the static capacitances and inductances including mutual capacitances and inductances of individual circuit components are first evaluated using the finite element method. An equivalent lumped circuit based on the calculated capacitances and inductances is then constructed for the entire circuit, whose analysis predicts the frequency responses of the circuit. The accuracy of this quasi‐static approach is investigated by comparing its solution with that of the full‐wave analysis based on Maxwell's equations. It is found that the quasi‐static analysis is very accurate for a miniature RF circuit whose electrical size is smaller than a fraction of the effective wavelength.

中文翻译：

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基于集总等效电路的微型RF电路的准静态数值建模

提出并研究了基于集总等效电路的准静态方法，以对微型RF电路进行有效的数值分析。在这种方法中，首先使用有限元方法评估包括单个电路组件的互电容和电感在内的静态电容和电感。然后，基于所计算的电容和电感的等效集总电路将为整个电路构建，其分析可预测电路的频率响应。通过与基于麦克斯韦方程的全波分析解决方案进行比较，研究了这种准静态方法的准确性。发现对于静态射频电路，其电气尺寸小于有效波长的一小部分，准静态分析非常准确。