IKBFU's Vestnik

2016 Issue №01

The calculation of the spectrum of nuclear quadrupole resonance deuterium replaced methyl group

Abstract

Values for quadrupole energy levels of CD3 molecule are obtained. Besides the energy values stationary states of this system is marked by total spin projection on the molecular symmetry axis. Nuclear selection rule for radiative transitions is M  1. The radiative transition frequencies are calculated and it is obtained, that spectrum have a dublet and triplet structure.

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A method for reducing phase noise in oscillator with variable-capacitance diode

Abstract

A method for reducing phase noise in voltage-controlled oscillator by introducing negative feedback noise circuit, offsetting the effect of fluctuations in the amplitude on the variable-capacitance diode capacity is proposed. The relationship between the level of the amplitude fluctuations and the amount of compensation of the bias is defined.

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The transmitting antenna system of moving object

Abstract

Presents the development of the transmitting antenna system has advantages when used in a ship: the constancy of the antenna current is independent of the operating frequency, reduced size and weight, reduce the impact of radiation on the electromagnetic environment of the ship, simplifying the coordination of feeder to the antenna; increase in the radiation power transmitting system.

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Formalization and solving optimal control technological complexes

Abstract

Results of development of mathematical methods and statement of problems of optimum control of a set of the interconnected trajectories–technologies of continuous technological processes and creations of numerical methods of their decision are given.

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