A Broadband High Gain Metal Lens Antenna Based on Four Ridge Waveguide

Abstract

The invention discloses a broadband high-gain metal lens antenna based on a four-ridge waveguide, which includes a lens composed of a plurality of lens units and a feed horn located at the focal plane of the lens, wherein each lens unit consists of a square waveguide and four A ridge located in the center of the four walls of the square waveguide solves the problem that the traditional lens antenna is difficult to achieve wide gain bandwidth and high aperture efficiency at the same time; the antenna of the invention has high gain and wide working gain bandwidth, which can meet the long-distance requirements of millimeter waves. Communication requirements; the antenna of the invention, while realizing far-field high-gain radiation, realizes dual-polarization scanning in two dimensions, and is suitable for the application scenario of millimeter-wave multi-beam scanning.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a wide-band high-gain metal lens antenna based on a four-ridge waveguide. Background technique [0002] With the rapid development of mobile communication technology, the requirements of various systems for antennas are also increasing. On the one hand, due to the continuous improvement of the working frequency band of the antenna, its transmission loss has increased compared with the traditional low-frequency antenna. Therefore, in this case, a high-gain antenna with high directivity and long-distance transmission characteristics must be used. On the other hand, modern antennas need to cover a larger spatial range to meet multi-beam application scenarios, so beam scanning antennas have also attracted much attention. High-gain beam scanning antennas are widely used in millimeter-wave communication fields such as satellite communication, radar detection, and space communication....

AI Technical Summary

Problems solved by technology

Due to the insertion loss and high Q value introduced by the addition of lumped elements, this type of lens antenna has the disadvantage of low efficiency for narrow bandwidth apertures

Metasurface lenses use new artificial materials to achieve phase regulation, but their structures are often complex and the design is cumbersome. Like multilayer frequency selective surface lenses, they have the disadvantages of narrow bandwidth and ohmic loss and dielectric loss.

Through the review and analysis of the existing technology, the current lens antenna is difficult to achieve wide bandwidth, high efficiency, and high gain at the same time

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