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MMA Memo #269

Tests of Materials for Use in Multi-Layer Infrared Filters in Cryogenic Applications

Jeffrey S. Clarke [1], Larry R. D'Addario [1]

July 13, 1999

Keywords: cryogenics, receivers, infrared filters

Thermal loading of cryogenic receivers is often dominated by infrared radiation accompanying the desired signal. This loading can be minimized by low-pass filters in the signal path. Here the use of multiple layers of thermally isolated materials is investigated for this purpose. Measurements of several materials are reported and compared with calculations.

[1] NRAO


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Last modified: 1999-dec-09

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