一种基于超表面的小型化宽带圆极化微带天线
By using metasurface layers and slot structures to cascade multiple circular polarization modes, the problem of narrow bandwidth and large size of traditional microstrip circular polarization antennas is solved, achieving broadband circular polarization and low sidelobe levels, making it suitable for compact array designs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NAT SPACE SCI CENT CAS
- Filing Date
- 2023-11-24
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional microstrip circularly polarized antennas have narrow bandwidth and large size, which leads to excessive spacing between array elements in the array design, affecting the high-frequency sidelobe level.
The design employs a metasurface layer and a multifunctional slot structure. By cascading multiple circular polarization modes, the antenna bandwidth is broadened within a limited size by combining the metasurface layer and the slot structure. The metasurface layer realizes the surface wave radiation and polarization conversion functions, while the slot structure serves as the feeding and radiation structure. Multiple circular polarization modes are nested in the design.
Achieving broadband circular polarization within a limited size reduces high-frequency sidelobe levels. The structure is simple and suitable for compact array design.
Smart Images
Figure CN117353016B_ABST