Infrared-Transparent Semiconductor Membranes for Electromagnetic Interference Shielding of Millimeter Waves

IF 6.4 3区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Materials Technologies Pub Date : 2024-07-13 DOI:10.1002/admt.202401013

Emma J. Renteria, Grant D. Heileman, Jordan P. Neely, Sadhvikas J. Addamane, Thomas J. Rotter, Ganesh Balakrishnan, Christos G. Christodoulou, Francesca Cavallo

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Abstract

It is demonstrated that single-crystalline and highly doped GaAs membranes are excellent candidates for realizing infrared-transparent shields of electromagnetic interference at millimeter frequencies. Measured optical transmittance spectra for the semiconductor membranes show resonant features between 750 and 2500 nm, with a 100% maximum transmittance. The shielding effectiveness of the membranes is extracted from measured scattering parameters between 65 and 85 GHz. Selected GaAs membranes and membranes/polyamide films exhibit shielding effectiveness ranging from 22 to 40 dB, which are suitable values to ensure the safe operation of infrared devices for commercial applications. Theoretical calculations based on a plane wave model show that the interplay of primary reflection and multiple internal reflections of the radio-frequency waves results in broadband shielding capabilities of the membrane between 10 and 300 GHz.

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用于屏蔽毫米波电磁干扰的红外透明半导体膜

研究表明，单晶和高掺杂砷化镓膜是实现毫米频率电磁干扰红外透明屏蔽的绝佳候选材料。测量到的半导体膜光学透射光谱显示出 750 至 2500 纳米之间的共振特征，最大透射率为 100%。从 65 至 85 GHz 的测量散射参数中提取了膜的屏蔽效能。精选的砷化镓膜和膜/聚酰胺薄膜显示出 22 至 40 dB 的屏蔽效果，这些值适合确保商业应用中红外设备的安全运行。基于平面波模型的理论计算表明，射频波的一次反射和多次内部反射的相互作用使膜具有 10 至 300 GHz 的宽带屏蔽能力。

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来源期刊

Advanced Materials Technologies Materials Science-General Materials Science

CiteScore

10.20

自引率

4.40%

发文量

566

期刊介绍： Advanced Materials Technologies Advanced Materials Technologies is the new home for all technology-related materials applications research, with particular focus on advanced device design, fabrication and integration, as well as new technologies based on novel materials. It bridges the gap between fundamental laboratory research and industry.