一种低互耦的小型化北斗抗干扰阵列天线
By combining the antenna-to-ground decoupling structure with the ferrite absorber, the electromagnetic coupling between array elements is blocked and absorbed, solving the mutual coupling problem of Beidou anti-interference array antenna under miniaturized design. This achieves efficient adaptive anti-interference and high-precision navigation performance, and is suitable for UAVs, handheld terminals and vehicle-mounted equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING TIANHAIDA TECH CO LTD
- Filing Date
- 2026-04-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing BeiDou anti-interference array antennas have strong mutual coupling between array elements due to miniaturization design, which leads to signal crosstalk, decreased performance of adaptive algorithms and low positioning accuracy. Moreover, existing decoupling methods are difficult to balance between miniaturization, multi-band coverage, low mutual coupling and radiation performance.
The antenna ground decoupling structure and the spatially coordinated layout of the ferrite absorber are adopted. The metal ground slot structure blocks the electrical coupling and the ferrite absorber absorbs the magnetic coupling, forming a dual decoupling mechanism of "blocking + absorption". Combined with the low noise amplification module and the anti-interference integrated module, low mutual coupling is achieved in a compact layout.
With a compact layout of element spacing ≤0.35λ, the isolation between elements reaches -25dB, the effectiveness of the adaptive anti-interference algorithm is improved, the radiation efficiency is ≥65%, which meets the high-precision navigation requirements of Beidou terminals and is suitable for UAVs, handheld terminals and vehicle-mounted equipment.
Smart Images
Figure CN122068282B_ABST