Multi-octave ultra-wideband antenna and conformal array antenna

Abstract

The invention belongs to the technical field of antenna design, and particularly relates to a multi-octave ultra-wideband antenna and a conformal array antenna. The multi-octave ultra-wideband high-isolation antenna comprises a dielectric substrate, a feed structure and metal radiation patches attached to the front surface and the back surface of the dielectric substrate; the metal radiation patches on the front surface and the back surface of the dielectric substrate are gradual patches of the same structure and jointly form an antipodal Vivaldi antenna, and the two metal radiation patches are symmetrically distributed on the upper side and the lower side of the dielectric substrate; the metal radiation patches are defined by internal index tapered slot lines and external index tapered slot lines, and a radiation open slot is formed between the two metal radiation patches on the front surface and the back surface. According to the conformal array antenna, the antenna is used as an antenna unit, the six antenna units are uniformly arranged on the side surface of a circular truncated cone carrier, a certain gap is kept between the adjacent antenna units, and the antenna units keep the original shape. According to the invention, the low-frequency working bandwidth, the radiation gain and the directivity of the antenna are improved.

Description

technical field [0001] The invention belongs to the technical field of antenna design, and in particular relates to a multi-octave ultra-wideband antenna and a conformal array antenna. Background technique [0002] With the rapid development of science and technology and the emergence of information-based weapons and equipment, the use of electromagnetic spectrum resources has become more frequent, the electromagnetic environment has become increasingly complex, and electromagnetic wave control methods are facing new challenges. [0003] With the continuous improvement of the level of countermeasures, the demand for the integration of perception, detection, guidance and countermeasures has gradually emerged, which requires the antenna to have adaptive and ultra-wideband performance. At the same time, due to performance constraints such as aerodynamics and stealth of the aircraft platform, it is expected that the corresponding antenna has the characteristics of being coplanar...

AI Technical Summary

Problems solved by technology

The calculation result of S11 for this antenna is as follows figure 2 As shown, it can be seen that the working bandwidth of the antenna is 2-12.5GHz, and the low-frequency cut-off frequency is 2GHz, which cannot meet the performance requirements of ultra-wideband systems.

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