Spectral response analysis of PVDF capacitive sensors

被引：6
|
作者：
Reyes-Ramirez, B. [1 ]
Garcia-Segundo, C. [1 ]
Garcia-Valenzuela, A. [1 ]
机构：
[1] Univ Nacl Autonoma Mexico, Ctr Ciencias Aplicadas & Desarrollo Tecnol, Mexico City 04510, DF, Mexico
来源：
SENSORS & THEIR APPLICATIONS XVII | 2013年 / 450卷
关键词：
D O I：
10.1088/1742-6596/450/1/012032
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：
We investigate the spectral response to ultrasound waves in water of low-noise capacitive sensors based on PVDF polymer piezoelectric films. First, we analyze theoretically the mechanical-to-electrical transduction as a function of the frequency of ultrasonic signals and derive an analytic expression of the sensor's transfer function. Then we present experimental results of the frequency response of a home-made PDVF in water to test signals from 1 to 20 MHz induced by a commercial hydrophone powered by a signal generator and compare with our theoretical model.
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页数：6
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