A new automatic gain control system for the microwave excitation signal for quantum frequency standards based on rubidium-87 and cesium-133 atoms

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Abstract

The need to develop a new automatic gain control system for the microwave excitation signal in quantum frequency standards (QFS) based on rubidium-87 and cesium-133 atoms is substantiated. Factors that negatively affect the operation of the automatic gain control system for the microwave excitation signal during the operation of the standards are identified. A new circuit for automatic gain control in the microwave paths of QFSs based on rubidium-87 and cesium-133 atoms has been developed. The designs of new units of the automatic gain control circuit are considered: a signal amplifier that generates an error signal and a PID controller that controls an attenuator that regulates the output signal. Calculation and modeling of the operation of the new units of automatic gain control of the microwave excitation signal included in the microwave paths of two QFSs have been performed. The obtained results confirm the validity of the new design solutions and methods for adjusting the amplitude of the microwave excitation signal in the automatic gain control circuit for QFSs based on rubidium-87 and cesium-133 atoms.

About the authors

A. V Shavshin

The Bonch-Bruevich Saint Petersburg State University of Telecommunications; Institute of Radio Navigation and Time; Peter the Great Saint Petersburg Polytechnic University; Saint Petersburg Electrotechnical University "LETI"

Email: Shavshin2107@gmail.com
Saint Petersburg, Russian Federation; Saint Petersburg, Russian Federation; Saint Petersburg, Russian Federation; Saint Petersburg, Russian Federation

A. A Petrov

Institute of Radio Navigation and Time

Saint Petersburg, Russian Federation

V. V Davydov

Peter the Great Saint Petersburg Polytechnic University; Saint Petersburg Electrotechnical University "LETI"

Saint Petersburg, Russian Federation; Saint Petersburg, Russian Federation

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