ON THE PROBLEM OF COMPUTER-AIDED DESIGN OF THE VIVALDI ANTENNA FOR THE EMISSION OF AN ULTRA-WIDEBAND ELECTROMAGNETIC PULSE 

Anton I. Mel'nichuk, Engineer of the service and repair group of on-board recording equipment training, Aviation Base of the Krasnodar Higher Military Aviation School of Pilots of Russian Ministry of Defense (1/1 Kotovsky street, Rtishchevo, Saratov Region, Russia), E-mail: pelmenio@mail.ru
Nikolay V. Goryachev, Candidate of technical sciences, associate professor of sub-department of radio equipment design and production, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: ra4foc@yandex.ru
Nikolay K. Yurkov, Doctor of technical sciences, professor, the honoured worker of science of the Russian Federation, head of sub-department of radio equipment design and production, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: yurkov_NK@mail.ru 

623.4.01 

10.21685/2307-4205-2021-1-9 

Background. The problem of suppression and / or destruction of electronic control systems of unmanned aerial vehicles (UAVs) is devoted to many works, including insufficient attention to suppression systems for ultra-small UAVs that do not have additional means of protection of onboard electronic equipment. However, such devices are especially dangerous when flying in a "flock". One of the main suppression methods is ultrashort electromagnetic pulse irradiation. The present work is devoted to the creation of an emitter of such UWPS and the assessment of their efficiency.
Materials and methods. Fatal damage on semiconductor junctions arises under the influence of electromagnetic overvoltage, which becomes possible in the presence of an effective antenna system capable of transmitting the power of ultrashort microwave pulses without loss. A radiator in the form of a Vivaldi antenna, which has the necessary technical characteristics, is proposed. A method is proposed for calculating such an antenna in a multifunctional UAV suppression system.
Results. Approximate calculation and optimization in the computer-aided design system have been carried out; verification of the results obtained when simulating the antenna; as well as verification of the results obtained when simulating the antenna.
Conclusions. The finite element method was used to calculate the Vivaldi antenna, a genetic algorithm for optimizing the resulting antenna was proposed, with the help of which it was possible to achieve acceptable characteristics of the emitter. A conclusion is made about the relevance of using a phased antenna array based on a Vivaldi antenna. 

unmanned aerial vehicles, electromagnetic radiation, onboard electronic equipment, means of suppression or destruction, microwave radiation, antennas, modeling