ISSTT Proceedings

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A Wideband Fixed-Tuned SIS Receiver for 200 GHz Operation

Authors:
R. Blundell, C.-Y.E. Tong, D.C. Papa, R.L. Leombruno, X. Zhang, S. Paine, J.A. Stern, H.G. LeDuc, B. Bumble
Abstract:
We report on the design and development of a heterodyne receiver, designed to cover the frequency range 176 GHz to 256 GHz. This receiver incorporates a niobium superconductor-insulator- superconductor (SIS) tunnel junction mixer, which, chiefly for reasons of reliability and ease of operation, is a fixed-tuned waveguide design. On-chip tuning is provided to resonate out the junction's parasitic capacitance and produce a good match to the waveguide circuit. Laboratory measurements on the first test receiver indicate that the required input bandwidth (40%) is achieved with an average receiver noise temperature of below 40 K. Mixer conversion gain is observed at some frequencies, and the lowest measured receiver noise is less than 30 K. Furthermore, the SIS mixer used in this receiver is of simple construction, is easy to assemble and is therefore a good candidate for duplication.
Categories:
SIS Receivers
Year:
1994
Session:
1
Full-text:
Download a PDF of this paper.
Page Number(s):
27-37