Design of broadband piezoelectric ceramic receiver.
Zhang Li · Electronic Components and Materials · 2000
ELECTRONIC COMPONENTS MATERIALS (China), Vol 19, No 3, P 21 22,30 (Jun 2000) In Chinese On the basis of characteristic of pezoelectric sound elements and the theory of three axial vibration system, by reducing resonant frequency, utilizing subresonance and choosing proper damp, a broadband receiver is developed. Of the receiver, the frequency band is 200～4 000 Hz, sensitivity 108±3 dB and sound pressure frequency characteristic flat. The receiver meets the requirements of wider playback frequency band and high quality GSM communication. (2 refs.)