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An ultra-wideband origami microwave absorber
Akash Biswas1, Constantinos L Zekios2, Collin Ynchausti3
1Department of Electrical and Computer Engineering, Florida International University, Miami, FL, 33174, USA. abisw002@fiu.edu.
Scientific Reports
|August 4, 2022
Summary
Researchers developed a novel, low-cost ultra-wideband microwave absorber using origami principles. This new design achieves high absorptivity over a broad frequency range, overcoming limitations of complex, expensive traditional absorbers.
Area of Science:
- Electromagnetics
- Materials Science
- Applied Physics
Background:
- Microwave absorbers are crucial for mitigating signal interference and shielding electromagnetic systems.
- Traditional wideband absorbers are often complex and expensive due to multi-layer designs and multiple electromagnetic components.
- A significant challenge exists in developing cost-effective wideband microwave absorbers.
Purpose of the Study:
- To propose a novel, low-cost design approach for ultra-wideband microwave absorbers.
- To leverage origami mathematics combined with electromagnetics for simplified fabrication.
- To achieve high absorptivity over an unprecedented bandwidth with minimal cost.
Main Methods:
- Utilized a Tachi-Miura origami pattern in a honeycomb configuration for absorber design.
- Developed analytical models based on transmission-reflection theory for inhomogeneous media.
- Validated absorber performance through electromagnetic simulations and experimental measurements.
Main Results:
- Demonstrated the first origami-based microwave absorber with absorptivity above 90% across a 24.6:1 bandwidth.
- The proposed design offers a significant improvement in bandwidth compared to conventional absorbers.
- Analytical models successfully explained the ultra-wideband behavior observed in simulations and measurements.
Conclusions:
- Origami-inspired design offers a viable and cost-effective solution for ultra-wideband microwave absorbers.
- This approach simplifies fabrication and assembly while maintaining high performance.
- The study paves the way for new, efficient electromagnetic shielding and signal mitigation technologies.
