Wing-borne low-scattering ultra-wideband conformal phased array based on strong coupling effect

Abstract

The invention discloses a wing-borne low-scattering ultra-wideband conformal phased array based on a strong coupling effect. The whole antenna structure of the array is subjected to conformal processing, and + / -45 degree scanning in the arraying direction is realized within a broadband of 0.5-2GHz. Compared with the traditional planar ultra-wideband phased array, the phased array disclosed by theinvention has significant low-scattering characteristics inside and outside the working band of the antenna. The whole antenna structure mainly includes a coaxial feeding structure of an antenna radiation unit, a gradient line balun used for connecting an antenna radiation patch and the feeding structure, a metal ground plate which is conformal with a flight carrier, a parasitic metal block located on the metal ground plate, a conformal dielectric substrate used for supporting the radiation structure of the whole phased array, connected long-slot conformal radiation patches based on the strongcoupling effect, a conformal dielectric substrate used for supporting a resistive electromagnetic metamaterial, a circular resistive electromagnetic metamaterial with an ultra-wideband electromagnetic wave absorbing effect and parasitic slots on both sides of the antenna radiation unit.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering, and in particular relates to an ultra-wide bandwidth angular scanning conformal phased antenna array system, specifically an ultra-wide-bandwidth angular scanning conformal phased antenna array system based on a strong coupling effect, conformal to a local wing carrier platform, and having low scattering characteristics. Phased antenna array with wide bandwidth angular scan. It is especially suitable for flight carrier platforms that require antennas with good stealth performance and low profile characteristics, and can realize ultra-wide bandwidth angular scanning. Background technique [0002] With the increasing development of modern electronic information technology, especially the increasingly stringent requirements of military electronics on antenna performance, traditional mechanical scanning antennas have been difficult to meet the demand. Because the electronically scanned p...

AI Technical Summary

Problems solved by technology

Its antenna unit adopts a strong coupling ultra-wideband planar antenna array unit, which has not been redesigned in a conformal environment. The curvature of the conformal frustum carrier of the entire phased array antenna is small, and the scattering of the conformal phased array is not considered. The analysis and comparison of the characteristics did not reflect the low scattering characteristics of the phased array conformal on the complex carrier platform

Images