SBIR/STTR Research Award
LOW COST ELECTRET HYDROPHONE
Award amount
$49,833Program and phase
SBIR · Phase IAward year
1989Award details
- Awarding agency
- Department of Defense
- Branch
- Defense Advanced Research Projects Agency
- Recipient company
- Waddan Systems
- Proposal award date
- Not reported
- Contract end date
- Not reported
- UEI
- Q8GWKAUBDFY1
- Solicitation number
- Not reported
- Topic code
- Not reported
Research abstract
RESEARCH TO DESIGN AND DEVELOP A LOW COST ELECTRET HYDROPHONE IS PROPOSED HERE. THE MAIN OBJECTIVE OF THE EFFORT IS TO DEVELOP MICRO-FABRICATION TECHNIQUES TO MAKE MINIATURE HYDROPHONES OF HIGH QUALITY. A SILICON WAFER IS CHEMICALLY ETCHED TO FORM A DIAPHRAGM. A METAL LAYER IS DEPOSITED TO FORM AN ELECTRET. ANOTHER METAL LAYER WAFER IS ALSO ETCHED TO FORM A DIAPHRAGM, BUT OF DIFFERENT THICKNESS. THE TWO WAFERS ARE BONDED TOGETHER TO YIELD A BATCH OF ELECTRET HYDROPHONES. SOUND WAVES PRODUCE DIFFERENT DEFORMATIONS IN THE TWO BACK-TO-BACK DIAPHRAGMS, HENCE, GENERATE A DIFFERENTIAL ELECTRICAL OUTPUT SIGNAL. A RESISTOR CONNECTED ACROSS THE METAL ELECTRODES YIELDS A SIGNAL WHEN THE SOUND WAVES IMPINGE ON THE LAYERED HYDROPHONE DIAPHRAGM.
Technology keywords
Not reported
Other awards by this recipient
Verified by the same UEI. These are other public SBIR/STTR award pages, not a merged company record.
- Multi Air Pollutant Lab-On-a-Chip (MAPLOC
- Wireless Optical Fiber Sensor Network (WOFSNet)for Methane
- Aircraft Nodal Data Acquisition System (ANDAS)
- Precision Navigation Grade Fiber-Optic Gyroscope (FOG)
- Aircraft Nodal Data Acquisition System (ANDAS)
Research funding history
23 SBIR/STTR records share this UEI (1987–2015). Reported award amounts total $6,532,976. Reported amounts are not federal obligations.
Phases: Phase I, Phase II
Agencies: Department of Defense, National Aeronautics and Space Administration, Environmental Protection Agency, Department of Health and Human Services