Superconductor Science and Technology

The stability of a terahertz receiver based on a superconducting integrated receiver

Roman V. Ozhegov, К. Н. Горшков, Gregory N Gol'tsman, Nickolay V. Kinev, V. P. Koshelets

Published Dec 23, 2010• 6 citations

Abstract

We present the results of stability testing of a terahertz radiometer based on a superconducting receiver with a SIS tunnel junction as the mixer and a flux-flow oscillator as the local oscillator. In the continuum mode, the receiver with a noise temperature of 95 K at 510 GHz measured over the intermediate frequency (IF) passband of 4–8 GHz offered a noise equivalent temperature difference of 10 ± 1 mK at an integration time of 1 s. We offer a method to significantly increase the integration time without the use of complex measurement equipment. The receiver observed a strong signal over a final detection bandwidth of 4 GHz and offered an Allan time of 5 s.

DOI: 10.1088/0953-2048/24/3/035003

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