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Accurate method for determining the IF noise in SIS heterodyne receivers

Abstract:
We present a new method to determine the contribution of the IF-amplifier chain to the overall noise performance of an SIS-based receiver. Using simulated I-V and IF power characteristics, we show that the standard method used to date to evaluate the IF noise can underestimate the contribution because of non-negligible curvature in the post-gap SIS I-V characteristic. We demonstrate that the new method is not susceptible to the post-gap curvature, and discuss its benefits and limitations to the accurate and precise evaluation of IF noise contributions.

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Role:
Author


Publisher:
Kluwer Academic/Plenum Publ Corp
Journal:
International Journal of Infrared and Millimeter Waves More from this journal
Volume:
21
Issue:
9
Pages:
1427-1439
Publication date:
2000-09-01
ISSN:
0195-9271


Language:
English
Pubs id:
pubs:223159
UUID:
uuid:f012b6b7-6a98-41d1-b73d-ffc205ea5a37
Local pid:
pubs:223159
Source identifiers:
223159
Deposit date:
2013-02-20
ARK identifier:

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