PERFECTLY MATCHED SIS ARRAYS FOR MM WAVES RE

S. V. Shitov, V. P. Koshelets, Sergey Kovtonyuk, Andrey M. Baryshev

Published Jan 1, 1993• 0 citations

Abstract

Parallel connected for dc and IF, but in series for rf current SIS junction arrays are under investigation since 1982. Novel conception of the improved matching for both input and output mixer ports have been developed and confirmed successfully with experimental receivers in 40-180 GHz frequency range. Parallel and parallel-series combinations integrated up to 11 Nb-AlOx-Nb type SIS junctions have been tested in full height waveguide mixers. The receivers' noise temperatures Tr(DSB) I50K have been achieved in the laboratory tests across frequency range 40-150GHz. The Tr as low as 35K have been carefully measured at 145GHz. The parallel biased SIS arrays for integrated on a chip SIS receiver have been designed and tested successfully. The integrated receiver noise temperature as low as 85K was achieved at 140GHz. New SIS array design for mixer in frequency range 500-1000 GHz is presented.

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