A Planar Switchable 3-D-Coverage Phased Array Antenna and Its User Effects for 28-GHz Mobile Terminal Applications
A Planar Switchable 3-D-Coverage Phased Array Antenna and Its User Effects for 28-GHz Mobile Terminal Applications
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DOI：
10.1109/tap.2017.2681463
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发表时间：
2017-12-01
影响因子：
5.7
通讯作者：
Pedersen, Gert Frolund
中科院分区：
文献类型：
--
作者：
Zhang, Shuai;Chen, Xiaoming;Pedersen, Gert Frolund
本文介绍了一种适用于 28 GHz 移动终端应用的平面可切换 3D 覆盖相控阵。为了用简单的平面阵列实现3D覆盖光束扫描，底盘表面波由三个相同的槽子阵列有效地激发和控制。三个子阵列将它们的波束切换到三个不同的区域。每个子阵列都作为相控阵来控制每个区域内的波束。实现了大的覆盖效率。 （例如，80% 的空间球已实现超过 8 dBi 的增益。）所提出的天线覆盖 28 GHz 频段中超过 2 GHz 的带宽。还研究了 28 GHz 数据模式和通话模式（语音）下的用户对可切换阵列的影响。在通话模式下，通过将可切换阵列放置在机箱顶部（靠近食指），可以实现良好的指向性和波束切换。并且将其放置在机箱底部（靠近手掌）可以显着减少用户阴影。在数据模式下，安装在顶部的可切换阵列比安装在底部的阵列损失更少，覆盖范围更大。所提出的天线已制造并测量。对话模式下顶部的阵列是由真人测量的。测量结果与模拟结果非常吻合。
This paper introduces a planar switchable 3-D-coverage phased array for 28-GHz mobile terminal applications. In order to realize 3-D-coverage beam scan with a simple planar array, chassis surface waves are efficiently excited and controlled by three identical slot subarrays. Three subarrays switch their beams to three distinct regions. Each subarray works as a phased array to steer the beam within each region. Large coverage efficiency is achieved. (e.g., 80% of the space sphere has the realized gain of over 8 dBi.) The proposed antenna covers a bandwidth of over 2 GHz in the band of 28 GHz. User effects on the switchable array are also studied in both data mode and talk mode (voice) at 28 GHz. In talk mode, good directivity and beam switching can be realized by placing the switchable array at the top of the chassis (close to the index finger). And the user shadowing can be significantly reduced by placing it at the bottom of the chassis (close to the palm). In data mode, the switchable array, mounted at the top, achieves less body loss and larger coverage than at the bottom. The proposed antenna is fabricated and measured. The array at the top in talk mode is measured with a real human. The measurements align well with simulations.