State primary standard of the unit of power of electromagnetic oscillations in the frequency range from 37.5 to 118.1 GHz GET 167-2021

Abstract

Radio frequency power is the main parameter characterizing the intensity of electromagnetic radiation at microwave frequencies in closed transmission paths. Measurement of the RF power in the millimeter wavelength range is widely used in radio communications, radio navigation, and radar. In order to ensure the uniformity of measurements of the RF power in the frequency range from 78.33 to 118.1 GHz, the State Primary Standard of the unit of RF power in waveguide paths in the frequency range from 37.5 to 78.33 GHz GET 167-2017has been improved. To ensure the possibility of increasing the upper frequency of the GET 167-2017, the development of sets of bolometric measuring transducers in waveguide paths 2.4×1.2 and 2.54×1.27 mm (WR10), calorimetric and comparating installations. The block diagram, technical characteristics and results of metrological studies of the State primary standard of the unit of RF power in waveguide paths in the frequency range of 37.5–118.1 GHz GET 167-2021 are given. Taking into account the features caused by a decrease in the cross section of the waveguide path, methods for estimating error components are refi ned. reproduction and transmission of a unit of RF power. The research results confi rmed the high accuracy of the standard, which now occupies a leading position among similar national standards.