PT Journal
AU Ozhegov, RV
   Gorshkov, KN
   Gol'tsman, GN
   Kinev, NV
   Koshelets, VP
TI The stability of a terahertz receiver based on a superconducting integrated receiver
SO Supercond. Sci. Technol.
JI Supercond. Sci. Technol.
PY 2011
BP 035003
VL 24
IS 3
DI 10.1088/0953-2048/24/3/035003
DE SIS mixer; SIR; stability
AB We present the results of stability testing of a terahertz radiometer based on a superconducting receiver with a SIS tunnel junction as the mixer and a flux-flow oscillator as the local oscillator. In the continuum mode, the receiver with a noise temperature of 95 K at 510 GHz measured over the intermediate frequency (IF) passband of 4-8 GHz offered a noise equivalent temperature difference of 10 ± 1 mK at an integration time of 1 s. We offer a method to significantly increase the integration time without the use of complex measurement equipment. The receiver observed a strong signal over a final detection bandwidth of 4 GHz and offered an Allan time of 5 s.
ER