Isabela Buitron-Burbano, C. A. Perez-Lopez, A. Ávila
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引用次数: 0
摘要
在消费电子行业，5G承诺随时随地为任何人提供高速互联网和完整连接，这引发了对可能的信号干扰的担忧，并提出了对电磁屏蔽解决方案的需求。我们设计和制造了一个3D打印的六边形网格(13 x 9 x 0.05) cm3，单元最大直径2.7 mm，以减少2.4 GHz和5 GHz的EM穿透。采用MIL-STD-285标准在消声室中对网格进行了表征，以改变网格与接收机天线的分离距离。结果表明，该网格在两种频率下均表现出较高的SEA和较低的SE，在5 GHz时总SE为15 dB，比2.4 GHz时高23.66%。网片离接收器越近，吸收能力越强。衰减可以用复合灯丝在同心结构中的结合所产生的相消干涉来解释。
3D Printed Composite Mesh for EM Shielding Applications
The promises of 5G for high-speed internet and complete connectivity, anytime, anywhere and for anyone within a consumer electronics sector, rises concerns for possible signal interference and imposes the need for EM shielding solutions. We present the design and fabrication of a 3D printed hexagonal mesh (13 x 9 x 0.05) cm3 with unit cell maximal diameter 2.7 mm to reduce EM penetration at 2.4 GHz and 5 GHz. The mesh was characterized in an anechoic chamber adapting the MIL-STD-285 standard to vary the mesh-receiver antenna separation distance. The results show that the mesh exhibits a high SEA with a low SER for both frequencies and a total SE of 15 dB for 5 GHz, 23.66% higher than for 2.4 GHz. The closer the mesh to the receiver, the superior the absorption capacity. Attenuation could be explained by the destructive interference associated to the combination of composite filament in a concentric structure.
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