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SIS Mixer Design for a Broadband Millimeter Spectrometer Suitable for Rapid Line Surveys and Redshift DeterminationsWe present some detail of the waveguide probe and SIS mixer chip designs for a low-noise 180-300 GHz double- sideband receiver with an instantaneous RF bandwidth of 24 GHz. The receiver's single SIS junction is excited by a broadband, fixed-tuned waveguide probe on a silicon substrate. The IF output is coupled to a 6-18 GHz MMIC low- noise preamplifier. Following further amplification, the output is processed by an array of 4 GHz, 128-channel analog autocorrelation spectrometers (WASP 11). The single-sideband receiver noise temperature goal of 70 Kelvin will provide a prototype instrument capable of rapid line surveys and of relatively efficient carbon monoxide (CO) emission line searches of distant, dusty galaxies. The latter application's goal is to determine redshifts by measuring the frequencies of CO line emissions from the star-forming regions dominating the submillimeter brightness of these galaxies. Construction of the receiver has begun; lab testing should begin in the fall. Demonstration of the receiver on the Caltech Submillimeter Observatory (CSO) telescope should begin in spring 2003.
Document ID
20040139896
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Rice, F.
(California Inst. of Tech.)
Sumner, M.
(California Inst. of Tech.)
Zmuidzinas, J.
(California Inst. of Tech.)
Hu, R.
(Michigan Univ.)
LeDuc, H.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Harris, A.
(Maryland Univ.)
Miller, D.
(California Inst. of Tech.)
Date Acquired
August 22, 2013
Publication Date
October 5, 2004
Subject Category
Electronics And Electrical Engineering
Funding Number(s)
CONTRACT_GRANT: NAG2-1068
CONTRACT_GRANT: NSF AST-99-80846
CONTRACT_GRANT: NAG5-9493
CONTRACT_GRANT: NAGW-107
CONTRACT_GRANT: NAG5-4890
Distribution Limits
Public
Copyright
Public Use Permitted.
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