Frequency-selection-surface invisible radome with dielectric medium truss structure

Abstract

The invention discloses a frequency-selection-surface invisible radome with a dielectric medium truss structure and belongs to the technical field of modern weapons. The radome takes a dielectric medium truss as a skeleton network to support an FSS (frequency Selective Surface) flexible screen so as to realize a stable filtering characteristic and further improve the invisibility and reliability of the FSS radome. The radome comprises a radome base, the dielectric medium truss, a flexible base and the FSS screen; the radome is of a closed structure and sequentially comprises the radome base, the dielectric medium truss, the flexible base and the FSS screen from the outermost layer to the innermost layer; and the radome base, the dielectric medium truss, the flexible base and the FSS screen are connected with adjacent parts. According to the invention, the ideal filtering characteristic of the FSS radome which utilizes air as a matching medium can be realized, the stable passband of electromagnetic waves which are incident with large angels and in different polarization ways can be maintained, and detection radar waves emitted by an enemy can be reflected to other directions so as to reduce echo signals, thereby realizing the aim of invisibility of a radar.

Description

technical field [0001] The invention belongs to the technical field of modern weapons, and in particular relates to a frequency selective surface stealth radome with a dielectric truss structure. Background technique [0002] With the development of military stealth technology, frequency selective surface technology has gradually attracted the attention of various countries. The English of frequency selective surface is Frequency Selective Surfaces, referred to as FSS. It is a spatial electromagnetic filtering structure that allows electromagnetic waves in a specific frequency band to pass through, while filtering out electromagnetic waves outside the frequency band. If it is applied to the radome of a fighter jet or a ship, it can realize the normal operation of the own radar, and reflect the electromagnetic waves of the enemy's radar working frequency band to other directions, so that the enemy's radar cannot receive the echo signal and cannot find our side. target, so f...

AI Technical Summary

Problems solved by technology

Northwestern Polytechnical University, Beijing University of Aeronautics and Astronautics, Changchun University of Science and Technology, Chinese Academy of Sciences Changchun Institute of Optics, Fine Mechanics and Physics and other scientific research institutes have done a lot of work in theoretical analysis and verification experiments, and the theoretical analysis methods for FSS technology are very mature. , but the FSS process implementation scheme has been unable to break through

Images