PT Unknown AU Ekstrom, H Karasik, B Weikle, R Yngvesson, KS Gol’tsman, G Kollberg, E Gershenzon, E TI Mixers using superconducting Nb films in the resistive state SE 23rd European Microwave Conf. PY 1993 BP 787 EP 789 DI 10.1109/EUMA.1993.336705 DE Nb HEB mixers AB The mixing of 20 GHz radiation in a Nb superconducting film in the resistive state was studied. The experiment gave evidence of electron-heating to be the origin of the non-linear phenomenon. The requirements on the operation mode and on the film parameters in order to obtain small conversion losses or even gain are determined. Our measurements indicate a conversion loss of about 6-8 dB. The hot-electron bolometer is considered to be very promising for use in heterodyne receivers in a wide frequency range from microwaves to terahertz frequencies. ER