Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2020. No. 8
ContentsFull text in Russian (pdf)
DOI https://doi.org/10.30898/1684-1719.2020.8.9
UDC 621.396.67
Maximum permissible parameters of an electromagnetic field pulse with a linearly increasing amplitude in the superface antenna of a high power microwave generator
A. A. Volkov
Military Educational-Research Centre of Air Force «Air Force Academy named after professor N.E. Zhukovsky and Y.A. Gagarin», Staryh Bolshevikov 54A, Voronezh, 394064, Russia
The paper is received on July 29, 2020
Abstract. The efficiency of high power microwave generators in the solving a number of applied problems directly depends on the power of the electromagnetic field emitted into the atmosphere. In atmospheric conditions, the radiation power is always limited by the electrical breakdown of the air in the antenna. Typical antennas for high power microwave generators are superface antennas. Therefore, studies related to the search for ways to increase the electric strength of superface antennas are of practical interest. One of these ways is associated with the use of pulses with a linearly increasing amplitude of the electric field strength. The purpose of the research is to determine the maximum permissible breakdown parameters of pulses of this type (maximum amplitude of the electric field strength, peak power and energy) in the superface antenna of a high power microwave generator and compare them with similar parameters of pulses with constant amplitude. The basis for solving the problem is the breakdown criterion and the equation of continuity of electrons in air. As a result, expressions were obtained for estimating the maximum permissible breakdown parameters of a pulse with linearly increasing amplitude in a superface antenna. The above parameters are compared with similar parameters of a pulse with constant amplitude. It is shown that the breakdown field and the maximum permissible peak power of a pulse with linearly increasing amplitude are higher, and the maximum permissible energy is lower than corresponding parameters of a pulse with a constant amplitude at the same duration. The regularities connecting the maximum permissible energy and the peak power of the pulses have been determined. It was found that at the same maximum permissible peak power, the energy of a pulse with linearly increasing amplitude is higher than that of a pulse with constant amplitude.
Key words: air breakdown, superface antenna, microwave generator.
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For citation:
Volkov A.A. Maximum permissible parameters of an electromagnetic field pulse with a linearly increasing amplitude in the superface antenna of a high power microwave generator. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2020. No.8. https://doi.org/10.30898/1684-1719.2020.8.9. (In Russian)