Electromagnetic resonator-based two-dimensional luneberg lens

Abstract

The invention relates to an electromagnetic resonator-based two-dimensional luneberg lens and belongs to the technical field of microwaves. The electromagnetic resonator-based two-dimensional luneberglens comprises n layers of concentric electromagnetic resonator unit modules, wherein each layer of electromagnetic resonator unit module is a circle formed by a plurality of electromagnetic resonator units with the same structure; and each electromagnetic resonator unit comprises a dielectric layer and an etching pattern layer, a metal copper material is adopted by the etching pattern layer andthe etching pattern layer is laminated on the dielectric layer; and the etching pattern layers of the electromagnetic resonator units in different layers of electromagnetic resonator unit modules arethe same in pattern and different in pattern size, and the dielectric layers are identical. The two-dimensional luneberg lens is arranged in a waveguide structure, horizontally polarized electromagnetic waves enter in parallel along one side of the two-dimensional luneberg lens, and an electromagnetic wave convergence effect can be obtained in the 180-degree direction of the incident waves. The electromagnetic resonator-based two-dimensional luneberg lens is achieved through a PCB processing technology, has the characteristics of being easy to process, low in cost and high in repeatability, and can be widely applied to a DOA estimation technology and an antenna beam convergence scene.

Description

technical field [0001] The invention relates to a two-dimensional Luneberg lens based on an electromagnetic resonator, which belongs to the field of microwave technology. Background technique [0002] Lunberg lens is an electromagnetic wave converging device, which can realize multi-beam and large-angle scanning, and is mainly used in communication, electronic countermeasures and other fields. The commonly used Luneberg lens is generally Luneberg sphere, but its shortcomings such as large volume, heavy weight and difficult fixation of the spherical structure are greatly restricted in practical applications. At the same time, the traditional three-dimensional Lumber ball has high requirements on the manufacturing process, and its realization and repeatability are poor. Since the DOA (Direction of Arrival) estimation measures the azimuth and elevation angles separately in two orthogonal planes, the Lunberg lens only needs to have good convergence characteristics in a certain ...

AI Technical Summary

Problems solved by technology

At present, the existing two-dimensional Luneberg lens with interdigitated electromagnetic resonator unit structure, due to the existence of air gaps, the units are not connected, and it is impossible to make a real object.

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