67-75

UDC 621.396.67
DOI: 10.15350/2306-2819.2018.3.67

ELEMENTARY RADIATOR FOR AN ANTENNA ARRAY FOCUSED IN NEAR-FIELD ZONE

D. A. Vedenkin, I. D. Filareeva, D. G. Makarova
Kazan National Research Technical University named after A. N. Tupolev-KAI,
10, K. Marx Street, Kazan, 420111, Russian Federation
E-mail: filareevairina95@gmail.com

ABSTRACT

Introduction. Currently, there is a rapid development of the theory and improvement of the technology of microstrip antennas. They have a wide variety of designs that can be employed as a single antenna and as the elements of an antenna array. Microstrip antennas are widely used in the development of various applications for mobile communication system such as phased antenna arrays, base stations with sector-shaped radiation pattern, space diversity reception and so on. The major advantages of microstrip antennas are manifested in weight, size, cost and ease of manufacture. However, they are considered as hard-to-study electrodynamic systems. The aim of the research was to develop an electrodynamic model of an elementary radiator for an antenna array focused in near-filed zone as well as to analyze its characteristics. Besides, the specific objective was to develop a model of an antenna array consisting of considered radiators. Different designs of antennas and elementary radiators are considered in the paper. In our studies we selected a microstrip antenna as an individual radiator. There are also presented a mathematical model of the microstrip antenna and its parameters. Results. Modeling the calculated microstrip antenna showed that the obtained antenna parameters did not meet the given ones. To adjust the antenna parameters, an optimizing procedure was performed for the model. Optimization was carried out by changing the parameters of the radiating surface. After that, we obtained electrodynamic characteristics of the radiator. These data were used to model antenna array consists of five similar microstrip radiators. Electrodynamic characteristics of the antenna array were obtained. Conclusion. Paper presents the results of computation of two types of elementary radiators for an antenna array focused in near-field zone. The characteristics of the elementary radiator were optimized, and its radiation pattern was modeled. According to the obtained data, we selected the optimum radiator which was used to design an antenna array focused in the far-field zone. Its main lobe width is 13.6°.

KEYWORDS

elementary radiator, antenna array, microstrip antenna

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ACKNOWLEDGMENT

This work was supported by the grant №8.6872.2017/8.9 from the Ministry of Education and Science of the Russian Federation.

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For citation: Vedenkin D. A., Filareeva I. D., Makarova D. G. Elementary Radiator for an Antenna Array Focused in Near-Field Zone. Vestnik of Volga State University of Technology. Ser.: Radio Engineering and Infocommunication Systems. 2018. No 3 (39). Pp. 67-75. DOI: 10.15350/2306-2819.2018.3.67