Experimental methods for recording the process of diffusion instability in gas systems

DOI: 10.34759/trd-2023-128-10

Аuthors

Azarov A. v.^1*, Latyshev A. E.^2**, Rozhkov S. S.^1***, Semernin M. A.^3****, Slavyansky A. O.^1*****, Karavaev M. N.^1******

1. STC "Geomonitoring Systems",
2. Central Scientific Research Radiotechnical Institute name of the academician A.I. Berg, 20, Novaya Basmannaya, 105066, Russia
3. Military representative office №2823, Belgorod, Russia

*e-mail: andrey_91@bk.ru
**e-mail: a.e.latishev@yandex.ru
***e-mail: SSR.kgd@mail.ru
****e-mail: semernin.88@mail.ru
*****e-mail: andrey.slavyanskiy@gmail.com
******e-mail: kmn.2693@yandex.ru

Abstract

The paper considers and substantiates the options for constructing a high-speed radio communication line based on an active phased array antenna (APAA) with electronic beam scanning. The methods of beam scanning, power distribution systems and schemes for supplying power to the emitting elements of an active phased array are considered, namely, a circuit with a series supply of APAA emitters is considered, a circuit with a series supply of APAA emitters based on phase shifters is considered, a circuit of parallel supply of APAA emitters is considered, as well as a binary-level scheme of parallel power supply of emitters of an active phased array. Requirements have been produced for the key element for supplying power to APAA emitters — annular resistive power divider, a block diagram of the APAA transmitter (beamforming module) has been proposed, including an antenna array, each emitter of which is connected to the corresponding transmitter module, which are powered through power distribution devices, signals conversion path, signal generation and processing devices, control device. While working on the requirements produced, the structure of annular resistive power divider was developed, which has a standing wave ratio of the input and output voltage of no more than 1.05 in the frequency band of interest, an isolation between the output channels of the divider of at least 27 dB, and a phase non-identity of the outputs of no more than 0.2°, which meets high requirements for the accuracy and speed of electronic scanning by the APAA beam of the onboard equipment of high-speed radio links for use in radio communication systems of advanced spacecraft.

Keywords:

high-speed radio line, active phased array antenna, beam scanning, power divider

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