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duo xie zhen kuan pin dai huan neng qi
Author(s): 
Pages: 62-64
Year: Issue:  z1
Journal: ACOUSTICS AND ELECTRONICS ENGINEERING

Keyword:  多谐振换能器宽带发射响应;
Abstract: 通过对传统纵振换能器增加质量块把驱动源分成两部分而形成双谐振振动系统,为了使双谐振之间响应幅值有很小的起伏,在换能器辐射面增加匹配层从而使换能器出现三谐振峰,通过对三个谐振峰的合理调整可以使换能器的通频带超过一个倍频程,根据理论分析与仿真计算设计并制做了发射电压响应大于140 dB、工作带宽21~47 kHz、Q值1.3、起伏在-3 dB以内的换能器.
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