文章摘要
童晖*,周益明,王佳麟,翁汝莲.高频宽带换能器研究[J].声学技术,2013,32(6):524~527
高频宽带换能器研究
Study of high frequency broadband transducer
投稿时间:2013-06-07  修订日期:2013-09-28
DOI:10.3969/j.issn1000-3630.2013.06.017
中文关键词: 匹配层  高频  宽带换能器
英文关键词: matching layer  high frequency  broadband transducer
基金项目:
作者单位E-mail
童晖* 中国科学院声学所东海研究站, 上海 200032 tonghui27@163.com 
周益明 中国科学院声学所东海研究站, 上海 200032  
王佳麟 中国科学院声学所东海研究站, 上海 200032  
翁汝莲 中国科学院声学所东海研究站, 上海 200032  
摘要点击次数: 1106
全文下载次数: 1564
中文摘要:
      主要研究高频换能器的匹配层技术,通过匹配层技术拓宽换能器的频带,首先利用等效电路法分析高频匹配层换能器,其次通过Matlab仿真分析匹配层材料的密度、声速、厚度变化对换能器电声参数性能的影响,进而对其电声性能进行优化设计,最终制作出一高频宽带换能器。通过实验测得结果与仿真结果基本一致,实验测得换能器的最大发送电压响应为178 dB,工作频带为260~370 kHz,带内发送电压响应起伏为-3 dB,300 kHz时换能器指向性-3 dB开角为6.5°。
英文摘要:
      This paper mainly investigated the matching layer technique for high frequency transducers. High-frequency transducer with a matching layer was first analyzed with equivalent circuit method. Then, the effect of matching layer parameters on the acoustic transducer performance was summarized by simulation. And its electro-acoustic characteristics were optimized. Finally, a high frequency broadband transducer was designed. Experimental results are in agreement with the theoretical values. It was shown that (i) the maximal transmitting sound level can reach 178 dB; (ii) the bandwidth of the transducer is 260~370 kHz; (iii) the fluctuation of the transmitting voltage response is -3 dB; (iv) the transducer has a directional angle of 6.5 degree with -3 dB @ 300 kHz.
查看全文   查看/发表评论  下载PDF阅读器
关闭