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Development of a national WR-10 (75 to 110 GHz) microcalorimeter

This paper presents a brief discussion of the design and development of a new WR-10 (75 to 110 GHz) rectangular waveguide microcalorimeter recently fabricated at the National Institute of Metrology, China. The new microcalorimeter will serve as the national primary power measurement system in millimeter-wave range. In this paper, its capability to measure the effective efficiency of WR-10 transfer standards will be discussed with some preliminary evaluation.