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Performance of the ...
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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
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2012
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electronicrdacarrier
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LIBRIS-ID:oai:research.chalmers.se:0176662e-fb75-472b-b913-5a0f417fc61c
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https://research.chalmers.se/publication/155763URI
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https://doi.org/10.1109/TTHZ.2011.2182220DOI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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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.
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Nyström, Olle,1979Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)e0olle
(author)
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Meledin, Denis,1974Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)denmel
(author)
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Sundin, Erik,1979Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)ersu
(author)
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Lapkin, Igor,1963Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)lapkin
(author)
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Fredrixon, Mathias,1972Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)mathiasf
(author)
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Desmaris, Vincent,1977Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)vindes
(author)
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Marouf Rashid, Hawal,1982Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)hawal
(author)
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Strandberg, Magnus,1975Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)masv
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Ferm, Sven-Erik,1961Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)svenferm
(author)
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Pavolotskiy, Alexey,1968Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)alpa
(author)
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Belitsky, Victor,1955Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)belitsky
(author)
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Chalmers tekniska högskola
(creator_code:org_t)
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In:IEEE Transactions on Terahertz Science and Technology2:2, s. 208-2142156-342X2156-3446
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