频域“双峰”消除方法的研究

Research on Elimination of "Double-summit" in Frequency Domain

在进行超声换能器电阻抗匹配研究时,发现产生的回波在频域上出现了"双峰"现象,本文主要分析了这种现象产生的原因及其不良影响,并通过调整匹配电路和参数去除了频域的"双峰",使其达到匹配的要求。

In experiment of matching circuits of piezoelectric ultrasonic transducers, a phenomena of ＂double-summit＂ had been found out in frequency domain with reflected wave. In this paper, the reason of creation of the phenomena is mainly analyzed and its unwanted effect is demonstrated, and then the ＂doublesummit＂ is eliminated by adjusting matching circuits and parameters, and at last the aim for matching is achieved.