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UDC 621.396.6(07)
The Design of the Antenna System with Complex Shape Reflector
M.S. Vorob'ev, South Ural State University, Chelyabinsk, Russian Federation,
L.P. Kudrin, South Ural State University, Chelyabinsk, Russian Federation,
R.R. Salikhov, JSC Research and Development company “Radio Engineering Systems”, Chelyabinsk, Russian Federation,
A.B. Khashimov, South Ural State University, Chelyabinsk, Russian Federation,
The design of the antenna system with complex shape reflector is developed. The antenna system is a linear phased array of the eight broadband radiators. The design of a broadband radiator with a reflector is considered. Inclusion of the quarter-emitter short-circuited loop on the symmetrical transmission line in the feed point provides a power balancing. Coordination of the radiator in a wide frequency band is achieved by placing of the passive short dipole near the radiator current elements. The shape of the dipole and its position are determined experimentally. Reflector is specially shaped to provide the electrical properties of the radiator.The design of the beam-forming circuit for implementing a given amplitude-phase distribution of array excitation is offered. Previously calculated lengths of connecting cables participate in the formation of the phase distribution of antenna array.Application of the flat sheet and fiberglass fairing is provided by the design for protection of the antenna system against climatic factors. The experimental results for radiator and prototype antenna system in general are presented. Aluminum alloy sheet with cutting, bending, welding and applying a conductive protective coating are used in the manufacture of the antenna system. This provides low cost of the antenna system, good mass-size parameters and high manufacturability of the design.
phased array, radiator, beam-forming circuit, pattern, broadband, structure
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Bulletin of the South Ural State University. Ser. Computer Technologies, Automatic Control, Radio Electronics, 2015, vol. 15, no. 3, pp. 75-82. (in Russ.) (Information and Communication Technologies and Systems)