Innovative Two-Phase Heat Spreader For X-Band T/R Modules

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: F3361503M2424
Agency Tracking Number: 031-0168
Amount: $69,681.00
Phase: Phase I
Program: SBIR
Awards Year: 2003
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
387 Technology Drive, College Park, MD, 20742
DUNS: 837268481
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 John Lawler
 President and Technical D
 (301) 403-1744
Business Contact
 John Lawler
Title: President and Technical D
Phone: (301) 403-1744
Research Institution
We propose to develop a T/R module housing that incorporates two-phase thin-film evaporators adjacent to each T/R module in order to increase greatly the lateral spreading within the housing. Our unique thin-film evaporators remove large amounts of heatvia ultra thin-film evaporation of a working fluid. After evaporation, the fluid's vapors pass through a semi-permeable membrane and condense on a surface in contact with the T/R module board. The lower thermal resistance of our T/R module housing willreduce the operating temperatures of future higher-power MMIC's, which will increase the reliability of the radar system.Our proposed design has many advantages. The cooling mechanism is ideal for the limited space available inside a T/R module housing. The thin-film evaporators will be able to remove heat at rates of up to 200 W/cm2, which is comparable to spray coolingmethods but with lower power and space requirements and fewer ancillary components. Our thin-film evaporators incorporated into the T/R module housing will reduce the thermal gradient across the housing and allow the operation of the radar system at highpower densities and frequencies. Similar active cooling packaging systems could be designed for other high-heat flux electronic devices, such as solid-state lasers, electronic power modules, computer network servers, and computer workstations withmultiple processors. ATEC is currently working on developing a potentially high volume electronic cooling product utilizing our thin-film evaporator technology.

* information listed above is at the time of submission.

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