The need to modernize the frequency standard on rubidium-87 atoms in order to improve their metrological characteristics for use in satellite navigation systems is substantiated. A part of the excitation signal generation system for the rubidium frequency standard has been developed. An experimental study of the resulting system was carried out. It has been established that the use of a different system for generating the excitation signal makes it possible to reduce the level of phase noise, as well as reduce the overall dimensions of the frequency standard.
$^1$Россия, 19323, Санкт-Петербург, пр. Большевиков, д.22, к.1\
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