A horn antenna

By setting a dielectric protrusion at the opening of the horn antenna to refract electromagnetic waves, the problem of narrowing main beamwidth in gain and sidelobe suppression of horn antennas is solved, achieving high gain and high sidelobe suppression, while reducing manufacturing costs and simplifying integration and installation.

CN122370719APending Publication Date: 2026-07-10RUIJIE NETWORKS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
RUIJIE NETWORKS CO LTD
Filing Date
2025-01-09
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

While existing horn antennas improve gain and sidelobe suppression, the main beamwidth tends to narrow, and metamaterials are complex and costly to process, which is not conducive to product integration and installation.

Method used

A dielectric protrusion is set at the horn opening, and the dielectric protrusion is coaxially set with the horn cavity. The radial dimension of the dielectric protrusion is smaller than the horn opening, and the cross-sectional area gradually decreases. The electromagnetic wave is refracted by the dielectric protrusion to achieve beam shaping, improve gain and sidelobe suppression without reducing the main beam width.

Benefits of technology

Without affecting the main beamwidth, the gain and sidelobe suppression performance of the horn antenna are significantly improved, manufacturing costs are reduced, and product integration and installation processes are simplified.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to the field of communication technology, and in particular to a horn antenna. The horn antenna includes a horn cavity and a dielectric protrusion. Along the axial direction of the horn cavity, the two ends of the horn cavity are a feed input terminal and a horn opening, respectively. The dielectric protrusion is disposed at the horn opening and is coaxially arranged with the horn cavity. The radial dimension of the dielectric protrusion is smaller than the diameter of the horn opening, and the cross-sectional area of ​​the dielectric protrusion gradually decreases from the horn opening towards the feed input terminal. The horn antenna in this application achieves beam shaping by setting a dielectric protrusion at the horn opening, thereby improving the horn antenna gain and sidelobe suppression without reducing the main beamwidth.
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