Method and apparatus for controlling temperature gradients...

Details Method and apparatus for controlling temperature gradients... Method and apparatus for controlling temperature gradients...

2006-06-13

2006-06-13

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Plural antennas

C165S139000

Reexamination Certificate

active

07061446

ABSTRACT:
A phased array antenna apparatus has a plurality of circuit portions which are each coupled to a respective antenna element. Capillary pressure of a cooling fluid within a wick in a loop is utilized to urge the fluid to travel around the loop, the wick being disposed in the region of the circuitry. In a variation, there are plural wicks in respective evaporators, and cooling fluid is distributed among the evaporators through a series of T-junctions. In another variation, cooling fluid is distributed to a plurality of evaporators in a sequence corresponding to a progressive increase in the respective amounts of heat accepted by the evaporators from structure being cooled.

REFERENCES:
patent: 5816313 (1998-10-01), Baker
patent: 5829519 (1998-11-01), Uthe
patent: 6205803 (2001-03-01), Scaringe
patent: 2005/0061487 (2005-03-01), Kroliczek et al.

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