一个压电陶瓷振子含有无限个振模,而常常应用其一个或数个,对于其它不需要的模式,必须加以抑制。本文对一种利用纵向效应的换能器的横效应的抑制进行探讨,提出了一种抑制方法。实验结果表明,这种方法消除了不需要的横效应,使换能器的频率响应特性达到我们所希望的要求。 A piezoelectric ceramic resonator contains an infinite number of modes, and often one or several of them are used, and must be suppressed for other unwanted modes. In this paper, the suppression of transverse effect of a transducer using longitudinal effect is discussed, and a method of suppression is proposed. Experimental results show that this method eliminates the unwanted horizontal effect and makes the frequency response characteristics of the transducer meet the requirements we expect.