A low noise receiver for millimeter and submillimeter wavelengths |
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Authors: | M J Wengler D P Woody R E Miller and T G Phillips |
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Institution: | (1) Calfifornia Institute of Technology, 91125 Pasadena, California;(2) AT&T Bell Laboratories, 07974 Murray Hill, New Jersey |
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Abstract: | A broadband, low noise heterodyne receiver, suitable for astronomical use, has been built using a Pb alloy superconducting tunnel junction (SIS). The RF coupling is quasioptical via a bowtie antenna on a quartz lens and is accomplished without any tuning elements. In this preliminary version the double sideband receiver noise temperature rises from 205 K at 116 GHz to 375 K at 349 Ghz, and to 815 K at 466 GHz. This is the most versatile and sensitive receiver yet reported for sub-mm wavelengths. |
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Keywords: | mm-wave sub-mm-wave low-noise-receiver SIS quasioptics |
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