Acta Optica Sinica, Volume. 39, Issue 12, 1223005(2019)
Design of Transmission-Absorption-Integrated Electromagnetic Window with Flexibility and Ultrathin Thickness
This study proposes a novel method for designing an integrated absorption-transmission flexible ultrathin electromagnetic window, which can absorb the unpolarized incident waves over a wide range of angles and is almost transparent at a given frequency band. The experimental results demonstrate 93% absorption at 4.46 GHz and 98% transmittance at 2.86 GHz, indicating an insertion loss of 0.09 dB. The total sample thickness is 0.288 mm, which makes the structure flexible and easy to conform to the curved target. Furthermore, a method for designing a broadband-integrated absorption-transmission electromagnetic window is proposed. The simulation results denote that the absorption can reach 90% at 7.7-12.2 GHz and that the transmittance is 90% at 4.35 GHz. The proposed broadband structure performs appropriately over a wide range of incident angles.
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Lixia Li, Rongqiang Li, Biao Wang, Tao Deng, Tiancheng Han. Design of Transmission-Absorption-Integrated Electromagnetic Window with Flexibility and Ultrathin Thickness[J]. Acta Optica Sinica, 2019, 39(12): 1223005
Category: Optical Devices
Received: Jul. 8, 2019
Accepted: Aug. 8, 2019
Published Online: Dec. 6, 2019
The Author Email: Li Rongqiang (liyq2011@cuit.edu.cn), Han Tiancheng (tchan123@swu.edu.cn)