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Regular version of the site

Article

NOISE EQUIVALENT TEMPERATURE DIFFERENCE OF A SUPERCONDUCTING INTEGRATED TERAHERTZ RECEIVER

Journal of Communications Technology and Electronics. 2010. Vol. 5. No. 4. P. 716-720.
Ozhegov R., Okunev O., Goltsman G., Filippenko L., Koshelets V.

The dependence of the noise equivalent temperature difference (NETD) of a superconducting integrated receiver (SIR) on the receiver noise temperature and the inputsignal level has been investigated. An unprecedented NETD of 13±2 mK has been measured at a SIR noise temperature of 200 K, intermediate-frequency bandwidth of 4 GHz, and time constant of 1 s. With a decrease in the input signal, an improvement in the NETD is observed. This effect is explained by a reduction in the influence of the instabilities of the receiver power supply and the amplification circuit that occur when the input signal is decreased.