UWB Muscle Water Content Sensor

Award Information
Agency: Department of Defense
Branch: Army
Contract: W81XWH-04-C-0011
Agency Tracking Number: A032-1991
Amount: $729,996.00
Phase: Phase II
Program: SBIR
Awards Year: 2006
Solicitation Year: 2003
Solicitation Topic Code: A03-156
Solicitation Number: 2003.2
Small Business Information
15400 Calhoun Drive Suite 400, Rockville, MD, 20855
DUNS: 161911532
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Eric van Doorn
 Director of Sensor Techno
 (301) 294-5229
Business Contact
 Mark James
Title: Contracts and Proposals M
Phone: (301) 294-5221
Email: mjames@i-a-i.com
Research Institution
The proposal explains Phase I results, using UWB for sensing muscle water content and lays down the plan for transition in Phase II. Basic operation of our sensor is to inject a train of ultra low power UWB pulses into the body, and coherently measure the reflections with picoseconds time resolution. Our sensor is RF based, and therefore interacts with the electrical properties of the body part under test. For human tissue, which is non-magnetic, there are two quantities that fully describe the average electrical-magnetic properties, the dielectric constant and conductivity. These two quantities are related to water content, and concentration of charged particles (i.e. electrolytes), respectively. Therefore by determining the dielectric constant and conductivity, we calculate the quantities of interest (water content, and electrolyte concentration). The sensing mechanism is based on the large difference between the dielectric constant of water, and that of the host material. Because the sensor is radar based, it will be non-contact. Because of the large bandwidth of our signals, the sensor will be capable of generating two- and possibly three-dimensional images of skeletal muscle water. Final sensor will have compact monosatic radar, antenna array and integrated data acquisition unit with remote communication features.

* Information listed above is at the time of submission. *

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