Low-profile wide-beam unmanned aerial vehicle-mounted dual-frequency satellite navigation antenna

By designing a low-profile wide-beam drone-mounted dual-frequency satellite navigation antenna, using an optimized support structure and radiation arm design, the wind resistance problems caused by the large size and high profile of traditional antennas and the limited reception frequency of single-frequency antennas are solved, and the wide beam width and low profile characteristics in the dual-band are achieved, which improves the accuracy and speed of the drone navigation system.

CN119726067AActive Publication Date: 2025-03-28DALIAN MARITIME UNIVERSITY
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Patent Information

Application Number
CN202510030279.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-08
Publication Date
2025-03-28
Estimated Expiration
2045-01-08

AI Technical Summary

Technical Problem

Traditional satellite navigation antennas have large size and high profile, which increase the wind resistance of drones and are difficult to be used in narrow spaces or complex environments. At the same time, the single-frequency antenna receives signal frequency is limited, making it difficult to meet the needs of high-speed motion and attitude changes of drones.

Method used

A low-profile wide-beam drone-mounted dual-frequency satellite navigation antenna was designed, using FPC dielectric substrate, spiral radiation arm, covering film, top annular support, bottom annular support, hollow lantern support, curved radiation arm and coaxial feeding structure. By optimizing the support structure and radiation arm design, losses are reduced and gain is improved.

Benefits of technology

The wide beam width and low profile characteristics of the antenna in the dual-band band are realized, and the accuracy and speed of the navigation system are improved, and it is suitable for high-speed motion and attitude changes of drones in complex environments.

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Abstract

The invention discloses a low-profile wide-beam unmanned aerial vehicle-mounted double-frequency satellite navigation antenna which comprises an FPC dielectric substrate, a spiral radiation arm, a covering film, a top annular support, a bottom annular support, a hollow lantern-shaped support, a bent radiation arm, a floor and a coaxial feed. The antenna is lower in profile, and has higher gain and wider axial ratio and half-power beam width in double frequency bands of satellite navigation. As the antenna is relatively high in low-elevation signal receiving capability and relatively low in profile, the antenna can be used for realizing an unmanned aerial vehicle-mounted satellite navigation terminal with low wind resistance and high sensitivity, and the positioning precision and speed of a high-speed moving carrier are effectively improved.
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