ISSTT Proceedings

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Measurements with a Diffusion-Cooled Nb Hot-Electron Bolometer Mixer at 1100 GHz

Authors:
A. Skalare, W. R. McGrath, B. Bumble, H. LeDuc
Abstract:
In this paper we report receiver sensitivity measurements with a diffusion-cooled niobium hot-electron bolometer around 1100 GHz. The lowest receiver noise temperature was 1670 K DSB, with approximately 40 nW of local oscillator power being dissipated in the device. The intermediate frequency bandwidth of this device, due to its short length (0.15 ┬Ám) and low normal resistance (43 [Omega]), exceeded the 1.8 GHz bandwidth of the measurement setup. The receiver was used to detect the sulfur dioxide gas absorption line at 1102 GHz in a heterodyne mode.
Categories:
HEB Mixers
Year:
1998
Session:
3
Full-text:
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Page Number(s):
115-120