S.G. Vesnin1, S.V. Chizhikov2, R.V. Agandeev3, G.A. Gudkov4

1–4 Bauman Moscow State Technical University (Moscow, Russia)
 

The key elements used in various designs of radiometric receivers should have low energy consumption, since if during the examination the miniature device is in thermal contact with the patient's body, it can heat the patient's tissues in the area under study and distort the picture of the patient's internal temperature field, which ultimately leads to a decrease in the diagnostic capabilities of the microwave radiometry method, therefore, in in the process of miniaturization of the device, it is necessary first of all to ensure a reduction in the energy consumption of the radiothermometer.

Objective: to conduct studies of heat generation processes in a radiometric receiver based on MIC technologies, as well as to assess the requirements for the dynamic range of a radiometric receiver in conditions of active interference.

The paper presents the results of an experimental study of the processes of heat release of the main components of a miniature microwave radiometer. It is shown that the main nodes that determine the energy consumption of the radiometer are a low-noise amplifier and a microwave load that is heated using a Peltier element.

A variant of reducing the energy consumption of a miniature radiometer by using a noise signal source with an adjustable noise temperature is proposed, which will lead to an increase in the diagnostic capabilities of the microwave radiometry method.

Vesnin S.G., Chizhikov S.V., Agandeev R.V., Gudkov G.A. Analysis of energy consumption of basic elements of a radiometric receiver. Nanotechnology: development and applications – XXI century. 2023. V. 15. № 1. P. 23–31. DOI: https://doi.org/10.18127/ j22250980-202301-02 (in Russian)

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