Low-noise 460 GHz waveguide Schottky mixer radiometer for radioastronomy |
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| Authors: | Keen N.J. Mischerikow K.D. Ediss G.A. Perchtold E. |
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| Affiliation: | Max-Planck-Institut für Radioastronomie, Bonn, West Germany; |
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| Abstract: | We report measurements on a cryogenically cooled Schottky barrier diode mixer system at 460 GHz. The mixer and horn are electroformed in a single block, and the carcinotron local oscillator is coupled in through a polarisation diplexer. A double-sideband system noise temperature of 870 K was obtained at midband at 12 K ambient. The total RF/IF double-sideband conversion loss was 9.0 dB, measured at 295 K ambient. |
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