Microwave radiometer blackbody calibration standard for use at millimeter wavelengths

Computer Science – Performance

Scientific paper

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Black Body Radiation, Calibrating, Microwave Radiometers, Millimeter Waves, Radio Telescopes, Temperature Measurement, Dielectrics, High Temperature Tests, Liquid Nitrogen, Noise Reduction, Reflectance

Scientific paper

The paper describes a blackbody high-temperature reference load designed to calibrate microwave radiometers at frequencies of 80-150 GHz. This constructed blackbody load is part of the calibration system of the 80-150-GHz receivers for a specific 14-m radio telescope. The discussion focuses on a description of the construction of the load and the measurements of its performance. An effective temperature of 410 K and a power reflection coefficient of less than 0.0005 have been measured at frequencies in the range 85-95 GHz.

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