Transforming single-band static FSS to dual-band dynamic FSS using origami

Area of Science:

• Electromagnetics
• Metamaterials
• Applied Physics

Background:

• Frequency selective surfaces (FSSs) are crucial for controlling electromagnetic waves but often rely on complex, static designs.
• Existing FSS designs present implementation challenges and lack reconfigurability.
• Traditional FSSs are static and cannot adapt their electromagnetic performance post-fabrication.

Purpose of the Study:

• To introduce a novel approach for designing reconfigurable frequency selective surfaces (FSSs) using origami principles.
• To achieve enhanced electromagnetic performance and new degrees of freedom by morphing FSS geometries.
• To transform a single-band FSS into a dual-band FSS with tunable characteristics.

Main Methods:

• Utilizing origami patterns to create morphable frequency selective surface (FSS) designs.
• Incorporating strongly coupled electromagnetic resonators within the origami structures.
• Analyzing the excitation of symmetric and anti-symmetric modes due to strong coupling and element orientation.

Main Results:

• Successfully transformed a single-band FSS into a dual-band FSS through origami-based morphing.
• Demonstrated that strong coupling and element orientation excite both symmetric and anti-symmetric modes, enabling dual-band operation.
• Showcased the ability to tune the dual-band performance by folding and unfolding the origami FSS structure.

Conclusions:

• The proposed origami FSS is a dynamic, reconfigurable electromagnetic structure, unlike static traditional FSSs.
• Origami-inspired designs offer a new pathway for creating adaptable and tunable frequency selective surfaces.
• This work provides a method for achieving reconfigurable dual-band electromagnetic response through geometric transformation.