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Proceedings Paper

A 230 GHz SIS-receiver for radio astronomy with 25 GHz instantaneous bandwidth
Author(s): Karl Jacobs
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Paper Abstract

For interstellar spectral line observations in the mm- and submm-wavelength range, low-noise, broadband heterodyne receivers are needed. Using a Niobium-Aluminum Oxide-Niobium SIS mixer element with a broadband integrated tuning circuit in a single-backshort waveguide mixer, we achieved a receiver noise temperature <=100K DSB from 225-255GHz without any backshort tuning. The lowest noise temperature with optimized backshort is 58K DSB at 230GHz with a mixer noise contribution of 27K.

Paper Details

Date Published: 30 November 2017
PDF: 2 pages
Proc. SPIE 2250, International Conference on Millimeter and Submillimeter Waves and Applications 1994, 22507K (30 November 2017); doi: 10.1117/12.2303289
Show Author Affiliations
Karl Jacobs, Univ. zu Köln (Germany)


Published in SPIE Proceedings Vol. 2250:
International Conference on Millimeter and Submillimeter Waves and Applications 1994
Mohammed N. Afsar, Editor(s)

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