Abstract
The expressions describing the autodyne (AD) response are obtained with allowance for the internal noise of a frequency-stabilized microwave oscillator subjected to the action of its self-radiation reflected from an object. The results of analyzing the AD and noise characteristics of the stabilized oscillator built around the band-reflecting filter with resistive coupling are presented. The conditions leading to the appearance of the periodic non-stationarity of noise characteristics are established. It is demonstrated that frequency stabilization is ensured by a gain in dynamic range. The experimental data on unstabilized and stabilized hybrid-integral AD oscillators based on the two-mesa Gunn diode of 8-mm range are presented.
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Original Russian Text © V.Ya. Noskov, K.A. Ignatkov, 2016, published in Radiotekhnika i Elektronika, 2016, Vol. 61, No. 9, pp. 905–918.
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Noskov, V.Y., Ignatkov, K.A. Noise characteristics of autodynes with frequency stabilization by means of an external high-Q cavity. J. Commun. Technol. Electron. 61, 1052–1063 (2016). https://doi.org/10.1134/S1064226916090102
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DOI: https://doi.org/10.1134/S1064226916090102