收发一体平面圆型换能器的研究

Integrated Transceiver Planar Circular Transducer

摘要:

采用圆盘换能器嵌圆环换能器的方式设计了收发一体的平面圆型换能器，其外部圆环换能器发射信号，内部圆盘换能器接收反射信号。分别对负责发射和接收的两个换能器的谐振频率进行理论分析，理论推导了圆盘换能器的接收灵敏度计算公式。利用有限元仿真软件确定内部圆盘水听器（接收换能器）的厚度，并调整其半径以改变面积比，从而分析了不同面积比对收发性能的影响。结果表明，当面积比为 0. 2 时，该收发一体换能器的最大发送电压响应为 177 dB，接收灵敏度为-166 dB。

Abstract:

A disc transducer embedded circular transducer is used to achieve transceiver integration， with the external circular transducer transmitting the signal and internal disc transducer receiving the reflected signal. The resonance frequencies of the two circular transducers are theoretically analyzed， and the formula for calculating the receiving sensitivity of the disc transducer is theoretically derived. Finite element simulation software is used to determine the thickness of the internal disc hydrophone （receiving transducer）， and its radius is adjusted to change the area ratio to analyze the effect of different area ratios on the transceiver performance. The results show that the transceiver transducer has a maximum transmit voltage response of 177 dB and receive sensitivity of -166 dB when the area ratio is 0. 2.