论文标题
真正的手对5G毫米波手机天线的影响：测量和电磁模型
Impacts of Real Hands on 5G Millimeter-Wave Cellphone Antennas: Measurements and Electromagnetic Models
论文作者
论文摘要
手机进入市场的渗透需要在随着时变的无线电环境中的强大操作，尤其是对于毫米波通信。人类的手和手指会导致手机物理环境的重大变化，这在很大程度上影响了沟通质量。在本文中，开发了真实手和手机天线的电磁模型，并通过文献中首次测量来验证它们的功效。设计的手机天线阵列为$ 28 $，设计了$ 39 $ 〜GHz。通过对两个原型的近场扫描来评估它们的辐射特性，首先在自由空间中进行校准天线测量系统和构建手机阵列的简化模型。接下来，用真实的手进行辐射测量值，以便将它们与阵列的手和简化模型之间相互作用的电磁模拟进行比较。比较表明，在球形覆盖范围方面达成了密切的一致性，表明手和天线阵列模型以及测量方法的功效。测量值的可重复性为$ 0.5 $〜dB的差异，在中间水平的球形覆盖范围的累积分布方面。
Penetration of cellphones into markets requires their robust operation in time-varying radio environments, especially for millimeter-wave communications. Hands and fingers of a human cause significant changes in the physical environments of cellphones, which influence the communication qualities to a large extent. In this paper, electromagnetic models of real hands and cellphone antennas are developed, and their efficacy is verified through measurements for the first time in the literature. Referential cellphone antenna arrays at $28$ and $39$~GHz are designed. Their radiation properties are evaluated through near-field scanning of the two prototypes, first in free space for calibration of the antenna measurement system and for building simplified models of the cellphone arrays. Next, radiation measurements are set up with real hands so that they are compared with electromagnetic simulations of the interaction between hands and simplified models of the arrays. The comparison showed a close agreement in terms of spherical coverage, indicating the efficacy of the hand and antenna array models along with the measurement approach. The repeatability of the measurements is $0.5$~dB difference in terms of cumulative distributions of the spherical coverage at the median level.
