The development of high-sensitive direct detection radiometric modules with low-noise input amplifiers in 5 mm wave band is discussed. Two versions of modules have been developed. The module designed for atmospheric investigation operated in frequency band 56.6 卤 0.25 GHz and had temperature sensitivity 35mK/Hz1/2. The module for biological investigation operated in frequency band 60...65 GHz and had temperature sensitivity 12 mK/Hz1/2.
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