A novel 1 × 4 phased array elliptical inverted T-shaped slotted sectored patch antenna with defected ground structure (DGS), resonate at proposed ultra-wide tetra band at 28, 43, 51, and 64 GHz with high gain and beam-steering capabilities is presented. An inverted T-shaped slotted stub is used with the sectored patch to achieve ultra-wideband properties. In order to resonate the antenna at four different bands, DGS of round bracket slot is etched on the ground. The 1 × 4 phased arrays are used at the top edge and bottom edge of mobile PCB with high gain. The simulation results show that the antenna has four ultra-wide bands: 25.8–29.7, 40.6–44.6, 49.2–53.1, and 62.2–74 GHz with a maximum gain of 16.5 dBi at 51 GHz. The phased array antenna is capable to steer its main beam within ±30° at the 26, 28, and 43 GHz, using appropriate phase shifts of each antenna element. The proposed millimeter wave antenna is particularly suitable for cellular infrastructures and can be a candidate for emerging 5G mobile applications. The availability of an additional 11.8 GHz (62.2–74 GHz) of contiguous unlicensed spectrum will allow the launching of new exciting wireless services.

中文翻译：

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使用具有波束控制功能的 DGS 设计用于 5G 应用的超宽带四频相控阵倒 T 形贴片天线

一种具有缺陷接地结构 (DGS) 的新型 1 × 4 相控阵椭圆倒 T 形开槽扇形贴片天线，在 28、43、51 和 64 GHz 的提议的超宽四频段谐振，具有高增益和波束控制能力被呈现。倒 T 形开槽短截线与扇形贴片一起使用，以实现超宽带特性。为了使天线在四个不同频段产生共振，圆形支架槽的 DGS 被蚀刻在地面上。1×4相控阵用于高增益移动PCB的顶边和底边。仿真结果表明，该天线具有四个超宽带：25.8–29.7、40.6–44.6、49.2–53.1 和 62.2–74 GHz，在 51 GHz 时最大增益为 16.5 dBi。相控阵天线能够在 26、28 和 43 GHz 频率下将其主波束控制在 ±30° 范围内，使用每个天线元件的适当相移。拟议的毫米波天线特别适用于蜂窝基础设施，可以成为新兴 5G 移动应用的候选者。额外的 11.8 GHz（62.2-74 GHz）连续免许可频谱的可用性将允许推出新的令人兴奋的无线服务。