Dual-polarization strong-coupling ultra-wideband phased-array antenna loaded with electromagnetic metamaterial

Abstract

The invention discloses a dual-polarization strong-coupling ultra-wideband phased-array antenna loaded with an electromagnetic metamaterial. The antenna comprises a strong-coupling folding dipole unit, a feed balun, a metamaterial wide-angle impedance matching layer, a microstrip transition line and a reflection floor, wherein the tail end of the strong-coupling folding dipole unit is slotted forfacilitating the dual-polarization design. A dipole and the designed feed balun are integrated on the same dielectric substrate, and the bottom of the dipole and the bottom of the designed feed balunare vertically embedded in the reflection floor; the wide-angle impedance matching layer is arranged at the top of the strong-coupling dipole unit, and the lower part completes the coaxial electric connection with the balun by bending the microstrip transition line, thereby achieving the impedance matching effect at the same time. The dual-polarization characteristic is achieved through the careful design of the tail end of the dipole, and a strong coupling folded dipole form is introduced; a novel wide-angle impedance matching layer structure is loaded to achieve the physical characteristicsof low profile and light weight and the excellent radiation performance of ultra wide band, low cross polarization and the like.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering, and in particular relates to a dual-polarization ultra-broadband strong coupling folded dipole phased array antenna loaded with a metamaterial wide-angle impedance matching layer. Background technique [0002] Phased array antenna technology appeared as early as the late 1930s, and its working principle is to control the beam by changing the feed phase in the array antenna. Phased array antennas are widely used in the fields of radar, communication and electronic countermeasures because of their rapid beam changing capabilities, multi-beam scanning capabilities, and space signal power combining capabilities. The development of modern radar, electronic communication and other technologies, as well as the emergence of high-speed platforms such as aircraft and missiles, have put forward higher requirements for the detection range of radar and the ability of fast tracking and identificati...

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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the dual-polarized ultra-broadband strong-coupling folded dipole phased array antenna provided by the present invention solves the problems of excessive antenna weight, high profile and isolation characteristics in the existing phased array antenna. bad question

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