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Journal Radioengineering №2 for 2014 г.

Article in number:

Mathematical simulation of the dependence of noise emperature of the partially adaptive receiving antenna array

Keywords:
radiation pattern
noise temperature
partially adaptive receiving antenna arrays
radiators
passive units
low noise amplifiers
complex amplitude regulators

Authors:

D. D. Ganzii - Dr.Sc. (Eng.) the head of department of PTC SIC "Vigstar". E-mail: ntc4@vigstar.ru

P. V. Rusakov - the head of sector of PTC, GSKB "Almaz - Antey". E-mail: rp258rt@rambler.ru

G. I. Troshin - Dr.Sc. (Eng.), Professor, Leading Research Scientist - PTC SIC "Vigstar". E-mail: ntc4@vigstar.ru

P. V. Rusakov - the head of sector of PTC, GSKB "Almaz - Antey". E-mail: rp258rt@rambler.ru

G. I. Troshin - Dr.Sc. (Eng.), Professor, Leading Research Scientist - PTC SIC "Vigstar". E-mail: ntc4@vigstar.ru

Abstract:

Space adaptation to the conditions of radio waves propagation and interference situation is one thing of basic means of guarantee, reliable radio communication. In most cases there is no necessity in pursuing these aims to use the phased antenna arrays being entirely uppercase of active modules. It is quite sufficiently to restrict their number. Such receiving antenna is named partially adaptive receiving antenna array (PARAA). As PARAA is situated in the common circuitry of the radio line PARAA has the intensive influence on the radio line energetic and quality of the receiving system: G/T, when G is of antenna array gain factor and T is noise temperature.
The results of the mathematical simulation of the dependence: of the PARAA noise temperature; on number of radiators; on number of active modules; on parameters of passive units; on amplification coefficient of low-noise amplifiers (LNA) and transmission factor of complex amplitude regulators (CAR) are presented. The investigations of noise temperature of PARAA consisting of two-, four- and eight-elements were made using different number of the adaptive canals under standard losses in the conductors and band pass filters no more than 0,3 dB, TLNA =50 K°, TANT =30 K°, and two coefficients of amplification of LNA K = 30 dB, K = 40 dB. The results of the mathematical simulation of the dependence of the PARAA noise temperature will be extremely useful under development of PARAA and estimating of energetic potential of radio lines and networks.

Pages: 25-30

References

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