As 5G millimeter wave (mmWave) wireless device involves some new technologies, such as beamforming, the radiofrequency (RF) exposure compliance test for the 5G mmWave wireless device is significantly complicated. In order to shorten the compliance period for 5G mmWave terminals, the relevant regulatory authorities recommend a combination of numerical simulation and measurements to demonstrate compliance. To verify the feasibility of this method, the RF exposure test conducted in this paper was a reverse procedure according to IEEE (the Institute of Electrical and Electronics Engineers) standards. First, actual measurements under various conditions, including different beam configurations, different test distances, different input power levels, different duty cycle, and nonpeak directions, were performed, and the changing trend of PD over testing conditions was analyzed. Then one dual-polarized patch antenna array was selected for simulation analysis. The feasibility of the method proposed in IEEE standards was proved through the comparison of the results experiment and numerical analysis.

中文翻译：

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5G 毫米波阵列天线的功率密度案例研究

由于5G毫米波（mmWave）无线设备涉及波束成形等一些新技术，5G毫米波无线设备的射频（RF）暴露合规性测试非常复杂。为了缩短5G毫米波终端的合规期，相关监管部门建议采用数值模拟和测量相结合的方式来证明合规性。为了验证该方法的可行性，本文中进行的射频暴露测试是根据 IEEE（电气和电子工程师协会）标准进行的逆向程序。首先，进行了各种条件下的实际测量，包括不同的光束配置、不同的测试距离、不同的输入功率电平、不同的占空比和非峰值方向，并分析了PD随测试条件的变化趋势。然后选择了一个双极化贴片天线阵列进行仿真分析。通过实验结果对比和数值分析，证明了IEEE标准中提出的方法的可行性。