Electronic Resource
Springer
International journal of infrared and millimeter waves
13 (1992), S. 669-677
ISSN:
1572-9559
Keywords:
SIS receiver
;
magnetic field
;
Nb−AlO x −Nb tunnel junctions
;
millimeter waves
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We have successfully constructed and tested a superconductor-insulator-superconductor (SIS) receiver for operation at 265–280 GHz using 1 μm2 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. We find 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. We illustrate the improvement in the intermediate frequency (IF) output stability with progressively increasing magnetic fields.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01010690
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