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本文用实验的方法叙述了压电换能器的静态夹持电容随温度变化的特性，以及引起匹配质量 下降的问题．提出了一种关于匹配的新概念一数字电感动态匹配，使匹配电感跟随静态电容的变 化，从而提高匹配质量．实验结果表明这种动态匹配方法是行之有效的．
In this paper, the experimental method is used to describe the characteristics of the static clamping capacitance of the piezoelectric transducer with temperature changes, and the problem that the matching quality is reduced. A new concept about matching dynamic matching of a digital inductor is proposed to make the matching inductor follow the change of the static capacitance so as to improve the matching quality. Experimental results show that this dynamic matching method is effective.