PT Unknown
AU Cherednichenko, S
   Drakinskiy, V
   Baubert, J
   Lecomte, B
   Dauplay, F
   Krieg, J
   Delorme, Y
   Feret, A
   Hübers, H
   Semenov, AD
   Gol’tsman, GN
TI 2.5 THz multipixel heterodyne receiver based on NbN HEB mixers
SE Proc. 18[super:th] Int. Symp. Space Terahertz Technol.
PY 2007
BP 112
DE NbN HEB mixers
AB A 16 pixel heterodyne receiver for 2.5 THz has been developed based on NbN superconducting hot-electron bolometer (HEB) mixers. The receiver uses a quasioptical RF coupling approach where HEB mixers are integrated into double dipole antennas on 1.5μm thick Si3N4 / SiO2 membranes. Spherical mirrors (one per pixel) and backshort distance from the antenna have been used to design the output mixer beam profile. The camera design allows all 16 pixel IF readout in parallel. Measurements of the mixers sensitivity and the input RF band are presented, and compared against calculations.
ER