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Effect of an applied magnetic field on the performance of a SIS receiver near 300 GHz (1992)

Mallison, W. H. ; De Zafra, R. L.

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Publication Date: 2019-08-14

Description: A superconductor-insulator-superconductor (SIS) receiver has been successfully constructed and tested for operation at 265 - 280 GHz using 1 micron/sq area Nb-AlO(x)-Nb tunnel junctions fabricated at Stony Brook. The best performance to date is a double sideband (DSB) receiver noise temperature of 129 K at 278 GHz. It is found that suppression of the Josephson pair currents with a magnetic field is essential for good performance and a stable dc bias point. Fields as high as 280 gauss have been used with no degradation of mixing performance. The improvement in the intermediate frequency output stability with progressively increasing magnetic fields is illustrated.

Keywords: COMMUNICATIONS AND RADAR

Type: International Journal of Infrared and Millimeter Waves (ISSN 0195-9271); 13; 5 Ma

Format: text

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