Audio-frequency characteristics of multilayer piezoelectric crystal actuator for use in hearing implant

Citation
Ew. Abel et al., Audio-frequency characteristics of multilayer piezoelectric crystal actuator for use in hearing implant, ELECTR LETT, 36(6), 2000, pp. 494-495
Citations number
3
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
ELECTRONICS LETTERS
ISSN journal
00135194 → ACNP
Volume
36
Issue
6
Year of publication
2000
Pages
494 - 495
Database
ISI
SICI code
0013-5194(20000316)36:6<494:ACOMPC>2.0.ZU;2-L
Abstract
A multilayer piezoelectric actuator has been evaluated for use in a hearing implant. Its Frequency response was flat up to 20kHz. Initial in-vitro tri als gave stapes displacement From stimulation at 3.5V RMS, which is equival ent to that from acoustic stimulation at 90dB SPL below 1kHz, increasing to 120dB at 8kHz. This performance meets accepted clinical specifications.