Development of practical broadband magnetohydrodynamic transducers for undersea digital communication
| Autor: | Corey J. Jaskolski, Eric J. Berkenpas |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Acoustics and Ultrasonics
Computer science Acoustics Bandwidth (signal processing) Acoustic wave Magnetic field symbols.namesake Transducer Arts and Humanities (miscellaneous) Computer Science::Sound Magnet Broadband symbols Seawater Magnetohydrodynamic drive Underwater Magnetohydrodynamics Lorentz force |
| Zdroj: | The Journal of the Acoustical Society of America. 120:3028-3028 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.4787131 |
| Popis: | Demand for broadband underwater digital communication is being driven by development of tetherless autonomous underwater vehicles (AUVs). Current communications methods employ typically piezoelectric transducers. While efficient, and broadband as receivers, these transducers exhibit significant frequency dependence when transmitting, thus limiting their utility in digital communications. Magnetohydrodynamic (MHD) transducers generate acoustic waves in seawater by applying time‐varying Lorentz force to moving ionic charges in the presence of a magnetic field. MHD transducers are ultracompliant, exhibit wide‐frequency bandwidth, and are therefore attractive for high‐speed undersea digital communications. This paper reports on exploratory development MHD transducers with the goal of improved transduction efficiency and bandwidth. Novel MHD transducer structures were fabricated with permanent magnet, parallel electrode structures, and planar interdigitated electrode structures. To evaluate transducer performa... |
| Databáze: | OpenAIRE |
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