一种基于NiZn铁氧体的P波段双层井字形金属超材料吸波器
By designing a NiZn ferrite-based P-band double-layer grid-shaped metallic metamaterial absorber, the problems of narrow bandwidth, low efficiency, and large thickness of existing absorbing materials in the P-band were solved, achieving high-efficiency, thin absorbers with broadband coverage and angle insensitivity in the P-band.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIV OF ELECTRONICS SCI & TECH OF CHINA
- Filing Date
- 2024-03-04
- Publication Date
- 2026-07-17
AI Technical Summary
Existing microwave absorbing materials have narrow absorption bandwidth, low absorption efficiency, and large thickness in the P-band, making it difficult to meet the needs of practical applications.
A P-band double-layer grid-shaped metallic metamaterial absorber based on NiZn ferrite is designed. By designing a double-layer grid-shaped metallic metamaterial structure on the basis of NiZn ferrite, a bottom metal plate, a lower NiZn ferrite, a middle grid-shaped metallic metamaterial, an upper NiZn ferrite, and a top grid-shaped metallic metamaterial are formed. This achieves a P-band absorption bandwidth with a reflection loss of less than -10dB. The resonant frequency and absorption bandwidth are controlled by adjusting the structural parameters.
It significantly improves the absorption bandwidth and absorption efficiency of the absorber. It is thin and angle-insensitive, and can ensure that the absorption bandwidth covers the P-band under different electromagnetic wave polarization angles and large incident angles, thus meeting the needs of practical applications.
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Figure CN117895244B_ABST