In a multimodule system, an increase in the number of radiating optical modules will increase the electromagnetic emissions. This article investigates the scaled tendency of the emissions in a router system loaded with hundreds of optical modules. An artificial router mimicking the real system was built to investigate this tendency. A patch antenna array mimics the radiation of the optical modules. It can be excited in in-phase and random-phase configurations. The measurement data verifies the theoretical analysis and the prediction from a statistical method without performing hundreds of different experiments on a real router. Assuming that all radiators are radiating at the same frequency and have similar radiation pattern with random phases, the average of the maximal directivity of the system will saturate if the number of radiators (N) is larger than 14. Furthermore, the average of the maximal electric field radiated will increase following a 10 log10 N (dB) tendency.

中文翻译：

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具有多个辐射器的人工路由器系统的系统级 EMI：预测和验证

在多模块系统中，增加辐射光模块的数量会增加电磁辐射。本文研究了装载有数百个光模块的路由器系统中发射的缩放趋势。一个模仿真实系统的人工路由器被构建来研究这种趋势。贴片天线阵列模拟光学模块的辐射。它可以在同相和随机相位配置中被激发。测量数据验证了理论分析和统计方法的预测，而无需在真实路由器上进行数百次不同的实验。假设所有辐射器都以相同的频率辐射并且具有相似的随机相位辐射图，