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A sensitive ALMA Band 10 SIS receiver engineering model
Uzawa, Y.1; Kroug, M.1; Kojima, T.1,2; Takeda, M.1; Candotti, M.1; Fujii, Y.1; Kaneko, K.1; Shan, W.3; Noguchi, T.1; Wang, Z.4
AbstractWe have developed a single polarization engineering model of the Atacama Large Millimeter/Submillimeter Array (ALMA) Band 10 (0.78-0.95 THz) receivers. The front-end optics comprises a pair of ellipsoidal mirrors and a corrugated feed horn. A waveguide mixer block is attached to the feed horn in which an NbTiN-based superconductor-insulator-superconductor (SIS) mixer chip, which uses a quartz substrate, is mounted onto a WR-1.2 full-height waveguide. The SIS mixer employs two Nb/AlO(x)/Nb junctions and an NbTiN/SiO(2)/Al microstrip tuning circuit. A very wide intermediate frequency (IF) system with a bandwidth of 4-12 GHz is employed. The receiver demonstrated double-sideband (DSB) noise temperatures of below 240 K at local oscillator (LO) frequencies ranging from 792 to 945 GHz, without any correction for loss in front of the receiver. The lowest DSB receiver noise temperature, 179 K, was obtained at the center frequency of the designed band, which corresponds to about 4 quanta. These results represent state-of-the-art sensitivity for a receiver at an operating physical temperature of 4 K.
KeywordTuning Circuits Mixers Design
Subject AreaPhysics
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI ; ISTP
WOS Research AreaPhysics
WOS SubjectPhysics, Applied ; Physics, Condensed Matter
WOS IDWOS:000270924900003
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan
2.Osaka Prefecture Univ, Grad Sch Sci, Osaka 5998531, Japan
3.Purple Mt Observ, Nanjing 210008, Peoples R China
4.Natl Inst Informat & Commun Technol, Nishi Ku, Kobe, Hyogo 6512492, Japan
Recommended Citation
GB/T 7714
Uzawa, Y.,Kroug, M.,Kojima, T.,et al. A sensitive ALMA Band 10 SIS receiver engineering model[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2009,22(11):114002.
APA Uzawa, Y..,Kroug, M..,Kojima, T..,Takeda, M..,Candotti, M..,...&Wang, Z..(2009).A sensitive ALMA Band 10 SIS receiver engineering model.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,22(11),114002.
MLA Uzawa, Y.,et al."A sensitive ALMA Band 10 SIS receiver engineering model".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 22.11(2009):114002.
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