Frequency tuning through physical reconfiguration of a corrugated origami frequency selective surface

Frequency tuning is investigated for a dipole-based frequency selective surface on a corrugated structure through origami folding. Three types of 1D folding patterns that alter the in-plane and out-of-plane element spacing at different rates are used to examine the frequency response in relation to spatial rearrangement. Folding decreases the in-plane spacing and leads to smaller Floquet periodicity lengths and a higher stop-band frequency. In some fold arrangements, folding increases the out-of-plane spacing and results in phase-shift and two distinct coupling modes.