BANDWIDTH CONTROL OF AN ELECTROSTATIC ULTRASONIC TRANSDUCER

被引：15

作者：

MATTILA, P ^{[1
]}

HIETANEN, J ^{[1
]}

机构：

[1] UNIV HELSINKI,DEPT PHYS,SF-00014 HELSINKI,FINLAND

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 1994年 / 45卷 / 03期

关键词：

BANDWIDTH CONTROL; ELECTROSTATIC TRANSDUCER; ULTRASONIC TRANSDUCER;

D O I：

10.1016/0924-4247(94)00841-8

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The bandwidth of an electrostatic ultrasonic transducer with a V-grooved backplate has been studied experimentally. The highest correlation is found to be between the bandwidth and the resonance frequency, and this relationship seems to be linear. Analysis indicates that the groove angle has no major effect on the bandwidth. Within certain limits the bandwidth can be increased by using a multiple-sized groove pattern in the backplate. The optimum performance is achieved when two groove sizes are used and the difference between groove sizes is small. In some cases transducers with multiple-sized grooves in the backplate show unpredictable responses.

引用

页码：203 / 208

页数：6

共 13 条

[1] DIAGNOSTIC MEASUREMENTS IN CAPACITIVE TRANSDUCERS [J].