PT Journal
AU Gershenzon, EM
   Gol’tsman, GN
   Gousev, YP
   Elant’ev, AI
   Semenov, AD
TI Electromagnetic radiation mixer based on electron heating in resistive state of superconductive Nb and YBaCuO films
SO IEEE Trans. Magn.
JI IEEE Trans. Magn.
PY 1991
BP 1317
EP 1320
VL 27
IS 2
DI 10.1109/20.133427
DE YBCO; HTS; Nb HEB mixers
AB 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.
ER