A feed network structure and a base station antenna

By using a cascaded power supply network structure for multiple phase shifter cavities, the problems of large size and high-order mode resonance caused by a single phase shifter cavity in traditional base station antennas are solved, thereby reducing antenna sidelobes and optimizing electrical performance.

CN224342530UActive Publication Date: 2026-06-09PROSE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
PROSE TECH CO LTD
Filing Date
2025-07-03
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The single phase shifter cavity in traditional base station antennas results in high sidelobes and large dimensions in the antenna pattern, which affects electrical performance and causes high-order mode resonance problems.

Method used

A power supply network structure with at least two cascaded phase shifter cavities is adopted. By setting a phase shifting medium and transmission structure in each cavity and electrically connecting the output end of the previous cavity to the input end of the next cavity, the size of each cavity is reduced to reduce sidelobe and high-order mode interference.

Benefits of technology

It effectively reduces the size of the phase shifter cavity, lowers the antenna sidelobes, enhances the anti-interference performance of higher-order modes, and optimizes electrical performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The disclosure discloses a feed network structure, which comprises: a first cavity; a first phase-shifting medium and a first transmission structure, the first phase-shifting medium is arranged on both sides of the first transmission structure, and the first phase-shifting medium and the first transmission structure are accommodated in the first cavity; a second cavity; a second phase-shifting medium and a second transmission structure, the second phase-shifting medium is arranged on both sides of the second transmission structure, and the second phase-shifting medium and the second transmission structure are accommodated in the second cavity, and an output end of the first transmission structure is electrically connected with an input end of the second transmission structure. In the feed network structure disclosed in the disclosure, at least two phase-shifter cavities are cascaded, wherein an output end of a former phase-shifter cavity is electrically connected with an input end of a latter phase-shifter cavity, thereby the size of each phase-shifter cavity can be reduced, the influence of high-order modes on the performance of the phase-shifter is reduced, and the sidelobe of an antenna comprising the feed network structure is also reduced.
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