Title :
Electromagnetic radiation mixer based on electron heating in resistive state of superconductive Nb and YBaCuO films
Author :
Gershenzon, E.M. ; Tsman, G. N Gol ; Gousev, Y.P. ; Elant, A.I. ; Semenov, A.D.
Author_Institution :
Dept. of Phys., Moscow State Pedagogical Univ., USSR
fDate :
3/1/1991 12:00:00 AM
Abstract :
A theory of an electron-heating mixer which makes it possible to calculate all the characteristics of the device is developed. It is shown that positive conversion gain is possible for such a mixer in the millimeter to near-infrared wavelength range. The dynamic range and the optimum heterodyne power can be selected from a very wide interval by varying the mixing element volume. Measurements made for Nb within the frequency range of 120-750 GHz confirm the theory. The conversion loss obtained at T=1.6 K and normalized to the element reaches 0.3 dB in the intermediate frequency band of 40 MHz; the possible noise temperature is 50 K. The estimation of noise temperature and output band for YBaCuO at T=77 yields 200 K and more than 10 GHz, respectively
Keywords :
barium compounds; electron device noise; high-temperature superconductors; niobium; photodetectors; superconducting devices; superconducting thin films; type II superconductors; yttrium compounds; 1.6 K; 120 to 750 GHz; 40 MHz; Nb; YBaCuO films; conversion loss; dynamic range; electron heating; electron-heating mixer; high temperature superconductor; millimeter to near-infrared wavelength range; noise temperature; optimum heterodyne power; positive conversion gain; resistive state; Dynamic range; Electromagnetic heating; Electromagnetic radiation; Electrons; Frequency estimation; Frequency measurement; Millimeter wave devices; Mixers; Temperature; Wavelength conversion;
Journal_Title :
Magnetics, IEEE Transactions on
