DOI: https://doi.org/10.20535/2411-2976.22011.%p

THEORY OF STABILIZED AUTODYNE OSCILLATORS AT THE LARGE REFLECTED SIGNAL

Vladislav Noskov, Kirill Ignatkov, Sergey Smolskiy

Abstract


Research results on autodyne oscillator stabilized by an external high-Q cavity are presented for the case of the large reflected signal, when amplitude of the reflected wave is commensurable with amplitude of natural oscillations. Expressions describing an autodyne response of the oscillator on the influence of the proper radiation reflected from a target are obtained. Calculations of amplitude, frequency and spectral characteristics of the autodyne system are performed. Conditions of exact tuning of the stabilized cavity are determined. Investigations of stabilized autodyne parameters at small distance to the reflected object are provided. It is shown that to expand the dynamic range of the autodyne system it is expedient to use the large coupling between cavities. Recommendations concerning practical application of the obtained results in the short-range radar are given.


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References


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