中圖分類號：TN929.5 文獻標志碼：A DOI: 10.16157/j.issn.0258-7998.223380 中文引用格式： 趙欣洋，尹琦云，楊晨，等. 孔縫尺寸參數(shù)對腔體的5G屏蔽效能影響規(guī)律研究[J]. 電子技術(shù)應用，2023，49(4)：16-20. 英文引用格式： Zhao Xinyang，Yin Qiyun，Yang Chen，et al. Influence of aperture size parameters on 5G shielding effectiveness of shielding cavity[J]. Application of Electronic Technique，2023，49(4)：16-20.
Influence of aperture size parameters on 5G shielding effectiveness of shielding cavity
Zhao Xinyang，Yin Qiyun，Yang Chen，Lu Hongjian
(State Grid Ningxia Electric Power Co.， Ltd.， Ultra-High Voltage Company，Yinchuan 750000，China)
Abstract： In order to ensure the shielding performance of the shielding cavity of the 5G equipment in the converter station, and to clarify the rule of the influence of the number and size of the cavity aperture on its shielding effectiveness, this study constructs the electromagnetic shielding effectiveness analysis model of the shielding cavity under the HFSS simulation environment, and analyzes the spatial distribution characteristics of the electromagnetic radiation of the 5G microstrip patch antenna. Then, the influence of the slot height of the cavity on the shielding effectiveness is analyzed. It is found that the shielding effectiveness under different slot diameters increases with the increase of the slot height, and the electromagnetic radiation intensity decreases from 24.81 dB at 0.5 mm height to 16.29 dB at 2.0 mm height. At the same time, the analysis shows that the shielding effectiveness decreases with the increase of the slot diameter, and the maximum radiation intensity increases from -15.13 dB at 1.0 mm diameter to 49.87 dB at 7.0 mm diameter. Finally, with a certain proportion of the aperture area, it is found that the shielding effectiveness of the shielding cavity is continuously improved with the increase of the aperture number and the decrease of the aperture diameter.
Key words : 5G communication technology；electromagnetic radiation；shielding cavity；aperture dimension parameters
