Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2023. №2
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DOI: https://doi.org/10.30898/1684-1719.2023.2.8

 

ADC Performance IN microwave radiometer

 

D.P. Skulachev, A.S. Kosov

 

Space Research Institute of Russian Academy of Sciences

119317, Russia, Moscow, Profsoyuznaya str., 84/32

 

The paper was received December 22, 2022.

 

Abstract. The configuration of a microwave switched radiometer is considered. The grounds that guide developers in determining the requirements for the ADC sampling rate are analyzed. It is shown that the ADC rate can be significantly reduced if an additional analog integrator is installed at the ADC input. Statistical modeling of such a circuit has been carried out, and the optimal parameters of the integrator have been determined. Calculations and laboratory tests of the microwave radiometer unit have been carried out. It is shown that the introduction of the simplest RC integrator makes it possible to use a low-speed ADC and leads to an insignificant change in the radiometer sensitivity.

Key words: microwaves, radiometer, ADC, integrator, sensitivity.

Financing: RF Government contract № 1921730301771217000241361/217/2258-З-2019.

Corresponding author: Skulachev Dmitry Petrovich, dskulach@mx.iki.rssi.ru

 

References

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For citation:

Skulachev D.P., Kosov A.S. ADC Performance in Microwave Radiometer. Zhurnal radioelektroniki [Journal of Radio Electronics] [online] 2023. №2. https://doi.org/10.30898/1684-1719.2023.2.8 (In Russian)