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Noise equivalent temperature difference of a superconducting integrated terahertz receiver

  • Physical Processes in Electron Devices
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Abstract

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.

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Authors
  1. R. V. Ozhegov
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  2. O. V. Okunev
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  3. G. N. Gol’tsman
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  4. L. V. Filippenko
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  5. V. P. Koshelets
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Additional information

Original Russian Text © R.V. Ozhegov, O.V. Okunev, G.N. Gol’tsman, L.V. Filippenko, V.P. Koshelets, 2009, published in Radiotekhnika i Elektronika, 2009, Vol. 54, No. 6, pp. 750–755.

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Ozhegov, R.V., Okunev, O.V., Gol’tsman, G.N. et al. Noise equivalent temperature difference of a superconducting integrated terahertz receiver. J. Commun. Technol. Electron. 54, 716–720 (2009). https://doi.org/10.1134/S1064226909060151

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  • DOI: https://doi.org/10.1134/S1064226909060151

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