Abstract
Numerical simulations made with use of COMSOL and experimental studies of a new type signal connection of thermoelectrically cooled IR detector to associated electronics are reported. Flexible coplanar line was designed and used for RF signal transmission and DC detector supply as well. The comparison of thermal properties of the connections made by fabricated flexible coplanar line and a pair of typical 25μm gold wires were described. Modeling and measurements of cooled IR detector surface temperature proved significantly lower heat load of flexible coplanar line than gold wires. Applying designed coplanar line assures lower operation temperature of IR detector and as a consequence lowers intrinsic electronic noise of the detector.
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