ISSTT Proceedings

ISSTT Proceedings

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Low noise 1.2 THz SIS receiver

Authors:
A. Karpov, D. Miller, F. Rice, J. Zmuidzinas, J. A. Stern, B. Bumble, H. G. LeDuc
Abstract:
We present the development of a low noise SIS mixer for the 1.1-1.25 THz heterodyne receiver of FIRST space radiotelescope. The quasi-optical SIS mixer has two NbTiN/AlN/Nb junctions with critical current density 30 kA/cm². The individual junction area is close to 0.65 µm². The SIS junctions are coupled to the optical input beam through a planar double slot antenna and a Si hyperhemispherical lens. The minimum DSB receiver noise temperature is 650 K, about 12 hv/k.
Categories:
SIS Mixers
Year:
2001
Session:
1
Full-text:
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Page Number(s):
21-22