A 492 GHz quasioptical SIS receiver for submillimeter astronomy

1 June 1994

journal article
research article
Published by AIP Publishing in Review of Scientific Instruments

Vol. 65 (6) , 1833-1838
https://doi.org/10.1063/1.1144831

Abstract

A 492 GHz quasioptical superconductor‐insulator‐superconductor (SIS)heterodyne receiver for submillimeter astronomy has been constructed with a double‐sideband noise temperature of 170±25 K, where the system response is an average over a 600 MHz i.f. bandwidth centered at 1.5 GHz. The excellent sensitivity is achieved through use of a planar twin‐slot antenna feeding a pair of Nb–Al2O3–Nb junctions linked by an inductance. A main beam of f/15 has been measured. The performance of this receiver is comparable to that of the best 492 GHz waveguide receivers currently in operation.

Keywords

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