Electronic calibrator MMIC with frequency range up to 50 GHz for vector network analyzers in GaAs pHEMT technologyDaniil Danilov, Nikolai Drobotun, Aleksei Medvedev and Vladimir UlyanovITM Web Conf., 30 (2019) 01002DOI: https://doi.org/10.1051/itmconf/20193001002