LOW COST ELECTRET HYDROPHONE

Award Information

Agency: Department of Defense	Branch: Defense Advanced Research Projects Agency	Award ID: 10362	Program Year/Program: 1989 / SBIR
Agency Tracking Number: 10362	Solicitation Year: N/A	Solicitation Topic Code: N/A	Solicitation Number: N/A

Small Business Information: Waddan Systems
8801 ENCINO AVE NORTHRIDGE, CA 91325-
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Woman-Owned: No

Minority-Owned: No

HUBZone-Owned: No

Phase 1: Fiscal Year: 1989

Title: LOW COST ELECTRET HYDROPHONE

Agency / Branch: DOD / DARPA

Contract: N/A

Award Amount: $49,833.00

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.

Principal Investigator:
Dr Mahendra Singh
8187727898

Business Contact:

Small Business Information at Submission:

Waddan Systems
8801 Encino Ave Northridge, CA 91325

EIN/Tax ID:

DUNS: N/A

Number of Employees:

Woman-Owned: No

Minority-Owned: No

HUBZone-Owned: No