一种近全向隐身电磁吸波材料
By designing electromagnetic absorbing materials with periodic structures, the problem of complex control of anisotropic materials in existing technologies has been solved, achieving lightweight, low-profile, and broadband omnidirectional absorbing effects, supporting efficient absorption of arbitrary polarized waves over a wide angle range.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIV OF ELECTRONICS SCI & TECH OF CHINA
- Filing Date
- 2022-10-24
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the complex control of anisotropic material parameters results in a large stealth cloak structure and limited stealth frequency band, making it difficult to achieve the engineering practical requirements of omnidirectional absorption and low cost, light weight, low profile, and broadband absorption in multi-static radar systems.
A near-omnidirectional stealth electromagnetic wave absorbing material is designed, which adopts a periodic structure composed of an upper resistive film, a middle resistive film, and a lower resistive film. Through creative design of different sheet resistance values and positional distributions, it achieves efficient absorption of different polarization waves, including the absorption of TM polarization and TE polarization waves in an ultra-wide angle range.
It achieves efficient absorption of arbitrary polarization waves over a wide range, with the absorption space covering almost half the space, providing high absorption rate under large angle incident conditions. It supports 90% absorption rate of TM polarized spatial waves in the ±82° incident range and 90% absorption rate of TE polarized spatial waves in the ±75° incident range. Moreover, the material is lightweight and has a low profile.
Smart Images
Figure CN115882234B_ABST