Abstract
This article concerns the design of a new electrostatic transducer whose backplate consists of a series of drilled pipes. A new one-dimensional model is derived which considers the interaction of the membrane with the air load, the air cavities, and the drilled pipes in the backplate. Dynamic equations for the impedance in each component of the device are calculated analytically and connected using interface conditions of continuity of pressure and radiation conditions into the air load. The model is able to produce solutions to the mechanical impedance of the device and the displacement of the membrane as a function of the device's design parameters. Model results for the output pressure compare well with previous experimental data. The inverse problem of retrieving the design parameters for a desired output is discussed.
Original language | English |
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Title of host publication | 2008 IEEE International Ultrasonics Symposium |
Place of Publication | Piscataway, NJ |
Publisher | IEEE |
Pages | 1409-1412 |
Number of pages | 4 |
ISBN (Print) | 978142424283 |
DOIs | |
Publication status | Published - 21 Mar 2009 |
Externally published | Yes |
Event | 2008 IEEE Ultrasonics Symposium - Beijing, China Duration: 2 Nov 2008 → 5 Nov 2008 |
Conference
Conference | 2008 IEEE Ultrasonics Symposium |
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Country/Territory | China |
City | Beijing |
Period | 2/11/08 → 5/11/08 |
Keywords
- Electrostatics
- Biomembranes
- Ultrasonic transducers
- Impedance
- Acoustic transducers
- Voltage
- Erbium
- Mathematical model
- Mathematics
- Design engineering