SIS mixier design for a broadband millimeter spectrometer suitable for rapid line surveys and redshift determinations

Frank Rice; Matthew Sumner; Jonas Zmuidzinas; R. Hu; Henry G. LeDuc; Andrew I. Harris; David Miller

doi:10.1117/12.459710

17 February 2003 SIS mixer design for a broadband millimeter spectrometer suitable for rapid line surveys and redshift determinations

Frank Rice, Matthew Sumner, Jonas Zmuidzinas, R. Hu, Henry G. LeDuc, Andrew I. Harris, David Miller

Author Affiliations +

Proceedings Volume 4855, Millimeter and Submillimeter Detectors for Astronomy; (2003) https://doi.org/10.1117/12.459710
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

We 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 II). 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.

Citation Download Citation

Frank Rice, Matthew Sumner, Jonas Zmuidzinas, R. Hu, Henry G. LeDuc, Andrew I. Harris, and David Miller "SIS mixer design for a broadband millimeter spectrometer suitable for rapid line surveys and redshift determinations", Proc. SPIE 4855, Millimeter and Submillimeter Detectors for Astronomy, (17 February 2003); https://doi.org/10.1117/12.459710

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