Broadband aperture waveguide structure dual circularly polarized antenna based on 3D printing technology

Abstract

The dual-circularly polarized antenna with broadband aperture waveguide structure based on 3D printing technology provided by the present invention includes a rectangular dielectric block, a rectangular waveguide, a first wedge-shaped structure and a second wedge-shaped structure, the rectangular dielectric block is located above the rectangular waveguide; the first wedge-shaped structure and the second wedge-shaped structure are respectively located at two diagonal positions of the rectangular waveguide and are symmetrical with respect to the central axis of the antenna; the first wedge-shaped structure and the second wedge-shaped structure are respectively provided with a pair of opposite rectangular concaves for improving the axial ratio bandwidth Groove; the distance from the bottom surface of the rectangular waveguide to a quarter of the waveguide wavelength is provided with a first differential port and a second differential port for feeding, and the two differential ports are arranged orthogonally. The antenna is integrally formed by 3D printing medium material, and a metal layer is plated on the surfaces of the rectangular waveguide, the first wedge-shaped structure and the second wedge-shaped structure. The invention has simple structure and convenient processing, and has the advantages of wide axial ratio bandwidth, stable gain, stable pattern, and flexible switching of circular polarization rotation direction.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a broadband aperture waveguide structure dual circularly polarized antenna based on 3D printing technology. Background technique [0002] 3D printing technology is an emerging technology for rapid prototyping of three-dimensional structures with additive methods as the main means. Compared with traditional three-dimensional processing technology, such as: CNC, injection molding, etc., 3D printing technology has a series of advantages such as simple manufacturing procedures, short processing cycle, efficient forming of complex structures, and high material utilization rate. At present, this technology has been widely used in various fields, such as education, medical care, aerospace, architecture, engineering, etc. At the same time, 3D printing technology has also received a lot of attention in the field of antenna research. In recent years, many antenna designs based on this te...

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Problems solved by technology

[0010] The present invention provides a broadband aperture waveguide structure dual circularly polarized antenna based on 3D printing technology to solve the traditional aperture waveguide structure circularly polarized antenna in the prior art with narrow axial ratio bandwidth, heavy weight, difficult processing and single polarization mode. Realize flexible switching of rotation direction and other issues

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