Abstract
A dual-band and high-efficiency reflective linear polarization converter composed of a layer of slotted metal wires has been proposed. Both the simulated and experimental results indicate that the structure can convert a linearly polarized wave to its cross-polarized state for two distinct frequency bands under normal incidence: 9.8–15.1 and 19.2–25.7 GHz. This phenomenon is attributed to a resonance that corresponds to the “trapped mode” at 15.8 GHz. This mode is stable with structural parameters and incident angle at a relatively wide range, and thus becomes promising for dual-band (also multiband) devices design. By surface current distribution and electric field analysis, the operation mechanism has been illuminated, especially for the “trapped mode”, identified by the equally but also oppositely directed currents in each unit cell.
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The authors are grateful to the supports from the National Natural Science Foundation of China under Grant no. 61471097, the Program for Changjiang Scholars and Innovative Research Team in University and the Program for New Century Excellent Talents in University (NCET).
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Li, F., Zhang, L., Zhou, P. et al. Dual-band reflective polarization converter based on slotted wire resonators. Appl. Phys. B 124, 28 (2018). https://doi.org/10.1007/s00340-018-6900-6
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DOI: https://doi.org/10.1007/s00340-018-6900-6