一种基于多层阻抗膜结构的超宽带透明吸波器
By designing a multilayer impedance film structure, the problems of large thickness and low transparency of traditional absorbing materials are solved, realizing thin, high-transparency ultra-wideband electromagnetic wave absorption, which is suitable for electromagnetic wave control at various incident angles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
- Filing Date
- 2023-11-08
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional electromagnetic absorbing materials have high reflectivity, large thickness, and low transparency, which cannot meet the needs of special application scenarios.
An ultrawideband transparent absorber employing a multilayer impedance film structure includes first and second resonant layers, a PET substrate, and a PMMA dielectric layer. It utilizes double-ring and symmetrical tetrahedral patch impedance films to absorb electromagnetic waves, achieving impedance matching and resonant absorption.
It achieves thin, highly transparent electromagnetic wave absorption, with an absorption efficiency of over 90% in the 5.85-32.64GHz frequency band and a bandwidth of 139.20%. It is insensitive to electromagnetic wave polarization and is suitable for various incident angles.
Smart Images
Figure CN117394044B_ABST