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  • Billade, Bhushan,1982Chalmers tekniska högskola,Chalmers University of Technology (author)

Performance of the First ALMA Band 5 Production Cartridge

  • Article/chapterEnglish2012

Publisher, publication year, extent ...

  • 2012
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:0176662e-fb75-472b-b913-5a0f417fc61c
  • https://research.chalmers.se/publication/155763URI
  • https://doi.org/10.1109/TTHZ.2011.2182220DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • We present performance of the first ALMA Band 5 production cartridge, covering frequencies from 163 GHz to 211 GHz. ALMA Band 5 is a dual polarization, sideband separation (2SB) receiver based on all Niobium (Nb) Superconductor-Insulator-Superconductor (SIS) tunnel junction mixers, providing 16 GHz of instantaneous RF bandwidth for astronomy observations. The 2SB mixer for each polarization employs a quadrature configuration. The sideband separation occurs at the output of the IF hybrid that has integrated bias-T for biasing the mixers, and is produced using superconducting thin film technology.Experimental verification of the Band 5 cold cartridge performed together with warm cartridge assembly, confirms that the system noise temperature is below 45 K over most of the RF band, which is less than five photon noise (5 hf/k). This is to our knowledge, the best results reported at these frequencies. The measurement of the sideband rejection indicates that the sideband rejection better than 10 dB over 90% of the observational band.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Nyström, Olle,1979Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)e0olle (author)
  • Meledin, Denis,1974Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)denmel (author)
  • Sundin, Erik,1979Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)ersu (author)
  • Lapkin, Igor,1963Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)lapkin (author)
  • Fredrixon, Mathias,1972Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)mathiasf (author)
  • Desmaris, Vincent,1977Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)vindes (author)
  • Marouf Rashid, Hawal,1982Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)hawal (author)
  • Strandberg, Magnus,1975Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)masv (author)
  • Ferm, Sven-Erik,1961Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)svenferm (author)
  • Pavolotskiy, Alexey,1968Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)alpa (author)
  • Belitsky, Victor,1955Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)belitsky (author)
  • Chalmers tekniska högskola (creator_code:org_t)

Related titles

  • In:IEEE Transactions on Terahertz Science and Technology2:2, s. 208-2142156-342X2156-3446

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