A.V. Andropov¹, S.V. Kuzmin²

1  LTD «STC» (St. Petersburg, Russia)

2  Bonch-Bruevich St. Petersburg State University of Telecommunications (St. Petersburg, Russia)

An integral part of the communication system with unmanned aerial vehicles is the airborne antenna-feeder system. As a rule, a circular pattern is required in the horizontal plane. However, since omnidirectional antennas have a small gain, they switch to schemes of several directional switchable antennas. It is proposed to use an unbalanced antenna for such systems.

Unbalanced antennas have limited substrate dimensions. The maximum gain is achieved not towards the horizon, but at some elevation angle. Proposes a design definition algorithm an unbalanced antenna wave channel with a given direction of maximum radiation. For example, a similar antenna is constructed using the algorithm. An antenna for operation in the frequency range of 2,3…2,7 GHz is taken as the initial data. The dimensions of the antenna elements are obtained from numerical experiments using an optimization module in CAD. A study of the directivity characteristics of an unbalanced wave channel of an antenna with a limited substrate and the dependence of the elevation angle of the maximum of the directivity pattern is carried out. The minimum size of the substrate at which the gain in the direction to the horizon stops growing is revealed. The range of values of the elevation angle of the maximum of the amplitude radiation pattern in the vertical plane is determined.

Andropov A.V., Kuzmin S.V. Algorithm for determining the design of an unbalanced wave channel antenna with a given direction of maximum radiation in the vertical plane. Achievements of modern radioelectronics. 2021. V. 75. № 4. P. 87–92. DOI: https://doi.org/10.18127/j20700784-202104-12 [in Russian]

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