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Proceedings Paper

Argus: a 16-pixel millimeter-wave spectrometer for the Green Bank Telescope
Author(s): Matthew Sieth; Kiruthika Devaraj; Patricia Voll; Sarah Church; Rohit Gawande; Kieran Cleary; Anthony C. S. Readhead; Pekka Kangaslahti; Lorene Samoska; Todd Gaier; Paul F. Goldsmith; Andrew I. Harris; Joshua O. Gundersen; David Frayer; Steve White; Dennis Egan; Rodrigo Reeves
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Paper Abstract

We report on the development of Argus, a 16-pixel spectrometer, which will enable fast astronomical imaging over the 85–116 GHz band. Each pixel includes a compact heterodyne receiver module, which integrates two InP MMIC low-noise amplifiers, a coupled-line bandpass filter and a sub-harmonic Schottky diode mixer. The receiver signals are routed to and from the multi-chip MMIC modules with multilayer high frequency printed circuit boards, which includes LO splitters and IF amplifiers. Microstrip lines on flexible circuitry are used to transport signals between temperature stages. The spectrometer frontend is designed to be scalable, so that the array design can be reconfigured for future instruments with hundreds of pixels. Argus is scheduled to be commissioned at the Robert C. Byrd Green Bank Telescope in late 2014. Preliminary data for the first Argus pixels are presented.

Paper Details

Date Published: 23 July 2014
PDF: 12 pages
Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII, 91530P (23 July 2014); doi: 10.1117/12.2055655
Show Author Affiliations
Matthew Sieth, Stanford Univ. (United States)
Kavli Institute for Particle Astrophysics and Cosmology (United States)
Kiruthika Devaraj, Stanford Univ. (United States)
Kavli Institute for Particle Astrophysics and Cosmology (United States)
Patricia Voll, Stanford Univ. (United States)
Kavli Institute for Particle Astrophysics and Cosmology (United States)
Sarah Church, Stanford Univ. (United States)
Kavli Institute for Particle Astrophysics and Cosmology (United States)
Rohit Gawande, California Institute of Technology (United States)
Kieran Cleary, California Institute of Technology (United States)
Anthony C. S. Readhead, California Institute of Technology (United States)
Pekka Kangaslahti, Jet Propulsion Lab. (United States)
Lorene Samoska, Jet Propulsion Lab. (United States)
Todd Gaier, Jet Propulsion Lab. (United States)
Paul F. Goldsmith, Jet Propulsion Lab. (United States)
Andrew I. Harris, Univ. of Maryland, College Park (United States)
Joshua O. Gundersen, Univ. of Miami (United States)
David Frayer, National Radio Astronomy Observatory (United States)
Steve White, National Radio Astronomy Observatory (United States)
Dennis Egan, National Radio Astronomy Observatory (United States)
Rodrigo Reeves, CePIA, Univ. de Concepción (Chile)


Published in SPIE Proceedings Vol. 9153:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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