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Regular version of the site

Article

The stability of terahertz receiver based on superconducting integrated receiver

Superconductor Science and Technology. 2011. Vol. 24. No. 3. P. 1-4.
Ozhegov R., Gorshkov K., Goltsman G., Kinev N. V., Koshelets V. P.

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.