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Träfflista för sökning "WFRF:(Yngvesson K. S.) "

Search: WFRF:(Yngvesson K. S.)

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1.
  • Giuffrida, T.S., et al. (author)
  • VLBI Studies of the W3OH Water Maser
  • 1977
  • In: Bulletin of the American Astronomical Society. - New York, NY : American Institute of Physics (AIP). - 0002-7537 .- 2330-9458. ; 9, s. 576-576
  • Journal article (peer-reviewed)
  •  
2.
  • Winkler, Dag, 1957, et al. (author)
  • On the feasibility of constructing an imaging array of slot-antennas integrated with SIS mixers
  • 1986
  • In: Proceedings of an ESA Workshop on a Space-Borne Sub-Millimetre Astronomy Mission. ; , s. 277-283
  • Conference paper (peer-reviewed)abstract
    • Several important developments have been made for the realization of array mixer receivers for imaging in radio astronomy: preliminary experiments on a 700 GHz SIS mixer have been performed and imaging at 31 GHz using an array of tapered slot antennas equipped with diode detectors has been demonstrated. These developments are briefly described
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3.
  • Zhang, W., et al. (author)
  • Quantum noise in a terahertz hot electron bolometer mixer
  • 2010
  • In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 96:11, s. 111113 -
  • Journal article (peer-reviewed)abstract
    • We have measured the noise temperature of a single, sensitive superconducting NbN hot electron bolometer (HEB) mixer in a frequency range from 1.6 to 5.3 THz, using a setup with all the key components in vacuum. By analyzing the measured receiver noise temperature using a quantum noise (QN) model for HEB mixers, we confirm the effect of QN. The QN is found to be responsible for about half of the receiver noise at the highest frequency in our measurements. The beta-factor (the quantum efficiency of the HEB) obtained experimentally agrees reasonably well with the calculated value.
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  • Result 1-3 of 3

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