Abstract:
The work carried out an experimental measurement and numerical calculation of the impedance along the IF path for a superconductor–insulator–superconductor tunnel junction in a two-way mixer in the range of 1.1–1.4 mm. It has been shown that the power reflectance can vary from -30 to -5 dB depending on the operating point. An experimental method for determining the impedance of an SIS mixer has been proposed and tested.