Ozhegov, R. V., Gorshkov, K. N., Gol'tsman, G. N., Kinev, N. V., & Koshelets, V. P. (2011). The stability of a terahertz receiver based on a superconducting integrated receiver. Supercond. Sci. Technol., 24(3), 035003.
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.
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Koshelets, V. P., Shitov, S. V., Ermakov, A. B., Filippenko, L. V., Koryukin, O. V., Khudchenko, A. V., et al. (2005). Superconducting integrated receiver for TELIS. IEEE Trans. Appl. Supercond., 15(2), 960–963.
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Koshelets, V. P., Dmitriev, P. N., Ermakov, A. B., Filippenko, L. V., Koryukin, O. V., Torgashin, M. Y., et al. (2005). Integrated superconducting spectrometer for atmosphere monitoring. Radiophys. Quant. Electron., 48(10-11), 844–850.
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