Abstract
We have calculated and measured the reflectance of a variety of absorbers for cryogenic waveguide bolometers. The best absorber has <−15 db reflectance across a band of width 25% of the K band (18–26 GHz) center frequency and <−6 db reflectance across the entire K band.
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Peterson, J.B., Goldman, M.A. Reflectance of broad band waveguide bolometers. Int J Infrared Milli Waves 9, 55–69 (1988). https://doi.org/10.1007/BF01010621
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DOI: https://doi.org/10.1007/BF01010621