Performance of the Caltech Submillimeter Observatory Dual-Color 180–720 GHz Balanced SIS Receivers

@article{Kooi2014PerformanceOT,
  title={Performance of the Caltech Submillimeter Observatory Dual-Color 180–720 GHz Balanced SIS Receivers},
  author={Jacob Willem Kooi and Richard Addison Chamberlin and Raquel Rodriguez Monje and Andr{\'a}s Kov{\'a}cs and Feng Rice and Hidetsugu Yoshida and B. Force and Ken B. Cooper and David J. Miller and Matthew R. Gould and Damian Lis and Bruce. Bumble and Richard G Leduc and Jeffery A. Stern and T. G. Phillips},
  journal={IEEE Transactions on Terahertz Science and Technology},
  year={2014},
  volume={4},
  pages={149-164}
}
In this paper, we report on balanced SIS receivers covering the astronomical important 180-720 GHz submillimeter atmospheric window. To facilitate remote observations and automated spectral line surveys, fully synthesized local oscillators are employed. High-current-density Nb-AlN-Nb superconducting-insulating-superconducting (SIS) tunnel junctions are used as the mixing element. The measured double-sideband (DSB) 230 GHz receiver noise temperature, uncorrected for optics loss, ranges from 50 K… CONTINUE READING

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