An Accurate, Fast, and Economic Cryogenic Platform for Characterizing High-temperature Superconducting Filters

Characterizing high-temperature superconducting (HTS) filters is considered in this paper. An accurate, fast, and economic cryogenic platform is in-house developed. The novel platform involves only foam box and liquid nitrogen. The characterization of a HTS bandpass filter (BPF) takes only minutes rather than hours compared with the outsourced characterization in refrigerator. Measurement results are in good agreement with the properties benchmarked in refrigerator.