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An 800 GHz NbN phonon-cooled hot-electron bolometer mixer receiver

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9 Author(s)
Kawamura, J.H. ; California Inst. of Technol., Pasadena, CA, USA ; Tong, C.-Y.E. ; Blundell, R. ; Cosmo Papa, D.
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We describe a heterodyne receiver developed for astronomical applications to operate in the 350 /spl mu/m atmospheric window. The waveguide receiver employs a superconductive NbN phonon-cooled hot-electron bolometer mixer. The double sideband receiver noise temperature closely follows 1 kGHz/sup -1/ across 780-870 GHz, with the intermediate frequency centered at 1.4 GHz. The conversion loss is about 15 dB. The receiver was installed for operation at the University of Arizona/Max Planck Institute for Radio Astronomy Submillimeter Telescope facility. The instrument was successfully used to conduct test observations of a number of celestial sources in a number of astronomically important spectral lines.

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Applied Superconductivity, IEEE Transactions on  (Volume:9 ,  Issue: 2 )