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Investigation of a heterodyne receiver with open structure mixer at 324 GHz and 693 GHz

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Abstract

The performance of a submillimeter heterodyne receiver using an HCOOH laser local oscillator and an open structure mixer with a Schottky barrier diode has been optimized for 693 GHz. Working at room temperature a single sideband (SSB) system noise temperature of 7,300 K, a mixer noise temperature of 6,100 K and a conversion loss of 12 dB has been achieved. The same receiver system has been investigated at 324 GHz using an HCOOD laser local oscillator yielding a noise temperature of 3,100 K (SSB), a mixer noise temperature of 2,400 K (SSB) and a conversion loss of 10 dB (SSB). An acousto-optical spectrometer has also been constructed, with 1024 channels and a channel-bandwidth of 250 kHz. The system NEP per channel was 2.5×10−17 W/Hz1/2 at 324 GHz and 5.0×10−17 W/Hz1/2 at 693 GHz.

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Authors and Affiliations

  1. Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-5300, Bonn 1, West Germany

    H. P. Röser, E. J. Durwen, R. Wattenbach & G. V. Schultz

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  1. H. P. Röser
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  2. E. J. Durwen
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  3. R. Wattenbach
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  4. G. V. Schultz
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Röser, H.P., Durwen, E.J., Wattenbach, R. et al. Investigation of a heterodyne receiver with open structure mixer at 324 GHz and 693 GHz. Int J Infrared Milli Waves 5, 301–314 (1984). https://doi.org/10.1007/BF01009658

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  • DOI: https://doi.org/10.1007/BF01009658

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