Metriwave final report

Details Metriwave final report Metriwave final report

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991stin...9217046w&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Mixing Circuits, Radio Astronomy, Receivers, Sis (Superconductors), Characterization, Construction, Microwaves, Millimeter Waves, Planetary Atmospheres, Sensitivity, Submillimeter Waves

Scientific paper

The superconductor-insulator-superconductor (SIS) mixer is a device which is being used in the construction of very sensitive receivers in the millimeter and submillimeter wavelength regions. With its potential for conversion gain and quantum-limited performance, it is becoming a device of prime importance in radio astronomy as well as earth and planetary atmospheric research. Many of the parameters of the SIS mixer cannot be readily measured in the laboratory, however, since most commercially available test instruments use test signal powers large enough to saturate or destroy SIS junctions. Detailed here is the construction of a microwave network analyzer with extremely low test signal powers. The results of a development performed by Dynamics Technology, Inc., under a Phase 2 SBIR contract from NASA (NAS7-1025) are documented. The work resulted in a network analyzer to be delivered to workers at the Jet Propulsion Laboratory, which should be capable of SIS mixer characterization in support of their ongoing work in this area.

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