Investigation of a superheterodyne mixing system with an ‘open structure’ mixer at 337 μm wavelength |
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Authors: | W Reinert |
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Institution: | (1) Radioastronomisches Institut, 53 Bonn, Bundesrepublik Deutschland |
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Abstract: | As local oscillator for a 337 m heterodyne system a stable HCN-laser was built with an output-power of 50 mW. As mixing device an open-structure mixer was used integrating the RF-coupling device, the mixer and the IF-transformer. As active mixer-element a special doped GaAs-diode with high cut-oif frequency was used. Comparison measurements with the 12th harmonic of a 4-mm klystron led to the evaluation of the minimal detectable power with approximately 10–15 WHz–1. |
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