ISSTT Proceedings

ISSTT Proceedings

You searched for:search icon

No Keywords
Showing 0 of items from your search. Start over 

Conversion Loss of a Resistive State Superconducting Mixer

Authors:
Orest Vendik, Erik Kollberg
Abstract:
We have investigated theoretically superconducting hot-electron type mixers operating in a frequency regime, where the signal and LO is below the bandgap frequency of the superconducting device. Then the signal and LO may see a device impedance that is modulated by the IF current, which leads to creation of an image current. Three cases are investigated: open and short-circuited image, and equal impedance at the signal and image frequency. We find that for open circuited image it is theoretically possible to obtain a conversion gain G = 0 dB, while for short-circuited image Gopt [approx. equal to] -7.7 dB and for equal impedance at the signal and image frequency Gopt [approx. equal to] 4.7 dB. These results can be compared to the optimum conversion gain of -6 dB for the classical bolometer mixer.
Categories:
Hot Electron Bolometers
Year:
1997
Session:
1
Full-text:
Download a PDF of this paper.
Page Number(s):
67-80