基于等阻抗差分段法的变阻抗线电路模拟

新型Z箍缩驱动源系统采用变阻抗线结构形式的径向阻抗变换器进行能量传递和变换，为了获得最大的能量效率，需要应用电路模拟方法研究变阻抗线传递功率的特性。采用了等阻抗差分段法对变阻抗线进行了建模计算，与以往的等长度分段方法比较，在相同的分段数量下，等阻抗差分段法在阻抗变化的连续性上优于等长度分段法。给出了具有指数形式的变阻抗线的算例，分别采用两种分段法进行了计算，对计算结果的比较表明:等阻抗差分段法可以使计算更快地收敛到真实解。

Circuit simulation of variable-impedance transmission line based on equal-impedance-difference segmentation method

The circuit equations of variable-impedance transmission lines are usually solved by numerical circuit simulation with simulation code such as PSpice. The commonly-used method is the equal-length segmentation method which divides the transmission line into many small sections with equal length. The paper proposes a different segmentation method, in which the small sections are with equal impedance difference. A transmission line with exponential impedance change is simulated with the two methods. The results show that, with the proposed method, the simulation converges to the true solution more quickly.