PT Journal
AU Ozhegov, RV
   Gorshkov, KN
   Okunev, OV
   Gol’tsman, GN
TI Superconducting hot-electron bolometer mixer as element of thermal imager matrix
SO Tech. Phys. Lett.
JI Tech. Phys. Lett.
PY 2010
BP 1006
EP 1008
VL 36
IS 11
DI 10.1134/S1063785010110106
DE HEB mixers
AB The possibility of using a matrix of sensitive elements on a 12-mm-diameter hyperhemispherical lens in a thermal imager operating in the terahertz range has been studied. Dimensions of a lens region acceptable for arrangement of the matrix, in which the receiver noise temperature varies within 16% of the mean value, are determined to be 3.3% of the lens diameter. Deviations of the main lobe of the directivity pattern are evaluated, which amount to ±1.25° relative to the direction toward the optimum position of a mixer. The fluctuation sensitivity of the receiver measured in experiment is 0.5 K at a frequency of 300 GHz.
ER