M.V. Shakurskiy1, V.K. Shakurskiy2

1,2 Povolzhskiy State University of Telecommunications & Informatics (Samara, Russia)

1 m.shakurskiy@gmail.com; 2 shakurskiy@mail.ru

Problem statement. One of the disadvantages of radio engineering systems using the Doppler effect is the lack of devices for amplifying the frequency deviations of the received signal, which limits the resolution of systems for monitoring the parameters of moving objects. Therefore, the development of signal frequency deviation amplifiers by analogy with signal amplitude and power amplifiers is an urgent task today.

Objective. To present the structure of a device for amplifying signal frequency deviations due to the Doppler effect, to substantiate the operating principle and to show the technology of its adjustment.

Results. The structure of a harmonic signal frequency deviation amplifier is proposed. Computer models of a three-frequency generator in the mode of amplifying the frequency deviations of the input excitation signal and generating an output harmonic signal with an increased frequency deviation are developed. Requirements for the phase-frequency characteristics of the band-pass amplifiers of the three-frequency generator are determined. During dynamic modeling, the efficiency of using an amplifier of harmonic signal frequency deviations arising due to the Doppler effect is confirmed.

Practical significance. The presented results allow us to develop recommendations for the practical implementation of a device for amplifying frequency deviations of a harmonic signal.

Shakurskiy M.V., Shakurskiy V.K. Doppler effect enhancement using a three-frequency digital generator. Radiotekhnika. 2025. V. 89. № 11. P. 115−122. DOI: https://doi.org/10.18127/j00338486-202511-12 (In Russian)

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