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

Award Information

Department of Defense
Missile Defense Agency
Award ID:
Program Year/Program:
2003 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
ATEC, Inc.
7100 Baltimore Avenue, Suite 204 College Park, MD -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2003
Title: Innovative Two-Phase Heat Spreader For X-Band T/R Modules
Agency / Branch: DOD / MDA
Contract: F3361503M2424
Award Amount: $69,681.00


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.

Principal Investigator:

John Lawler
President and Technical D

Business Contact:

John Lawler
President and Technical D
Small Business Information at Submission:

387 Technology Drive College Park, MD 20742

EIN/Tax ID: 521926739
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No