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| Seawater Electromagnetic Shield |
| Received:August 13, 2018 Revised:May 25, 2019 |
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| DOI：10.7643/ issn.1672-9242.2019.05.003 |
| KeyWord:seawater, Debye model, conductivity, electromagnetic shielding materials, shielding effectiveness, transmission coefficient |
| Author | Institution |
| WANG Shen-yun |
Research Center of Applied Electromagnetics, Nanjing University of Information Science and Technology, Nanjing , China |
| JI Xiang-jian |
Research Center of Applied Electromagnetics, Nanjing University of Information Science and Technology, Nanjing , China |
| CHEN Da-wei |
Research Center of Applied Electromagnetics, Nanjing University of Information Science and Technology, Nanjing , China |
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| Abstract: |
| Objective To investigate the shielding effectiveness of the seawater and its affecting factors where seawater is used as electromagnetic shielding material. Methods Formulas for calculating the shielding effectiveness of composite electromagnetic shielding structure made up of a seawater layer sandwiched by double glazing glass were derived with electromagnetic property parameters of sea water and glass and electromagnetic boundary condition that tangential fields be continuous. Results The seawater electromagnetic shielding wall with enough salinity and thickness had good shielding effectiveness. The shielding effectiveness could be enhanced by increasing the thickness, salty and temperature of the seawater layer, while it was not sensitive to the glass thickness. Conclusion Seawater can be used as effective electromagnetic shielding material. It has advantages of optical transparency, shielding effectiveness reconfiguration, cycle control of heat conduction. It has theoretical and application value in military and civilian areas. |
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