REALIZATION AND PRELIMINARY MEASUREMENTS ON A 94 GHZ SIS MIXER |
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| L. Oberto, N. De Leo, M. Fretto, A. Tartari, L. Brunetti, V. Lacquaniti |
- Abstract:
- In this work we present preliminary results concerning the characterization, in terms of noise temperature, of a 94 GHz prototype receiver based on a superconductive SIS mixer developed at INRIM for the MASTER experiment. It is a tryple receiver for the 94, 225 and 345 GHz bands for astrophysical observations based on SIS Josephson junctions. A promising noise figure of 110 K (about 22 times the quantum limit) has been obtained and contribute in fixing an upper bound to the final overall receiver noise temperature that is compliant with the experiment requirements. Moreover it is not far from the actual state of the art in the field. The realization of the device is also described with attention to the optimization of crucial features along with a DC characterization of its Josephson junctions. Finally, we have demonstrated the INRIM ability to design and realize SIS mixers usable for practical radioastronomical applications.
- Download:
- IMEKO-TC4-2008-045.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
- Title:
- XVIth IMEKO TC4 International Symposium on Electrical Measurements and Instrumentation (together with 13th IMEKO TC4 Workshop on ADC Modelling and Testing)
- Place:
- Florence, ITALY
- Time:
- 22 September 2008 - 24 September 2008