This study proposes an approach to minimize the electromagnetic radiated emissions (RE) from the plate-fin type heatsinks, and the proposed approach is based on the parametric analysis using measurement and simulation results. In the parametric analysis, width, length, height, number of fins, base height, and fin thickness on electromagnetic interference effects are taken into account in the range of 2–8 GHz (S-C band). Simulations are held as a first step, and that is followed by the production of them. The next step is conducting regular standard measurements in an anechoic chamber to validate the simulation results. According to the results, first, parameters such as length, fin height and width are more effective on radiated emission than the others with an amount of change in RE of 1–6 dBmV/m. Second, these three parameters are effective in 52%, 73%, and 38% of the 2–8 GHz band, respectively. The length of the heatsink is recommended in the widest frequency band (73%). Lastly, when the effects of these three parameters on RE are examined, width is the most efficient with 5–6 dBmV/m.

中文翻译：

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板翅式 CPU 散热器在 2-8 GHz 辐射发射的参数研究

本研究提出了一种最小化板翅式散热器的电磁辐射 (RE) 的方法，该方法基于使用测量和模拟结果的参数分析。在参数分析中，在 2-8 GHz（SC 频段）范围内考虑了宽度、长度、高度、鳍片数量、基部高度和鳍片厚度对电磁干扰效应的影响。模拟是第一步，然后是生产。下一步是在消声室中进行定期标准测量，以验证模拟结果。根据结果​​，首先，长度、鳍片高度和宽度等参数对辐射发射比其他参数更有效，RE 的变化量为 1–6 dBmV/m。第二，这三个参数分别在 2-8 GHz 频段的 52%、73% 和 38% 中有效。建议在最宽频带 (73%) 中使用散热器的长度。最后，当检查这三个参数对 RE 的影响时，宽度是最有效的，为 5–6 dBmV/m。