A 64-Element 28-GHz Phased-Array Transceiver With 52-dBm EIRP and 8-12-Gb/s 5G Link at 300 Meters Without Any Calibration
A 64-Element 28-GHz Phased-Array Transceiver With 52-dBm EIRP and 8-12-Gb/s 5G Link at 300 Meters Without Any Calibration
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DOI：
10.1109/tmtt.2018.2854174
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发表时间：
2018-12-01
影响因子：
4.3
通讯作者：
Rebeiz, Gabriel M.
中科院分区：
文献类型：
--
作者：
Kibaroglu, Kerim;Sayginer, Mustafa;Rebeiz, Gabriel M.
本文提出了一种基于2x 2发射/接收（TRX）波束形成器芯片的用于5G通信的64单元28 GHz相控阵收发器。16个2 x 2 TRX芯片与威尔金森合路器/分频器网络和28-32 GHz堆叠贴片天线一起组装在12层印刷电路板（PCB）上。由于2 x 2波束形成器芯片和PCB威尔金森网络的对称设计，64单元阵列分别产生1.1 dB和8.9度均方根幅度和相位误差，无需校准。分析了64阵元之间的相位和幅度失配对相控阵性能的影响，结果表明，由于相控阵的平均效应，64阵元之间的相位和幅度失配对相控阵性能的影响很小。详细的模式，有效的各向同性辐射功率（EIRP），并在没有任何阵列校准的情况下进行链路测量，并显示对称设计技术的鲁棒性。相控阵天线可以扫描到+/- 50度的方位角（H平面）和+/- 25度的仰角（E平面），具有低旁瓣，并实现了52 dBm的饱和EIRP，4 GHz的3 dB带宽。使用两个64单元TRX阵列和16-/64-QAM波形，在所有扫描角度上以8-12 Gb/s的创纪录数据速率演示了300 m无线链路。
This paper presents a 64-element 28-GHz phased-array transceiver for 5G communications based on 2x2 transmit/receive (TRX) beamformer chips. Sixteen of the 2 x 2 TRX chips are assembled on a 12-layer printed circuit board (PCB) together with a Wilkinson combiner/divider network and 28-32-GHz stacked-patch antennas. The 64-element array results in 1.1 dB and 8.9 degrees rms amplitude and phase error, respectively, with no calibration due to the symmetric design of the 2 x 2 beamformer chips and the PCB Wilkinson network. The effect of phase and amplitude mismatch between the 64 elements is analyzed and shown to have little impact on the 64-element array performance due to the averaging effects of phased arrays. Detailed pattern, effective isotropic radiated power (EIRP), and link measurements performed without any array calibration are presented and show the robustness of the symmetrical design technique. The phased array can scan to +/- 50 degrees in azimuth (H-plane) and +/- 25 degrees in elevation (E-plane) with low sidelobes and achieves a saturated EIRP of 52 dBm with 4-GHz 3-dB bandwidth. A 300-m wireless link is demonstrated with a record-setting data rate of 8-12 Gb/s over all scan angles using two 64-element TRX arrays and 16-/64-QAM waveforms.