Low-Cost Millimeter-Wave Circularly Polarized Planar Integrated Magneto-Electric Dipole and Its Arrays With Low-Profile Feeding Structures
Low-Cost Millimeter-Wave Circularly Polarized Planar Integrated Magneto-Electric Dipole and Its Arrays With Low-Profile Feeding Structures
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DOI：
10.1109/lawp.2020.3002343
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发表时间：
2020-06
影响因子：
4.2
通讯作者：
Junfeng Xu;W. Hong;Z. Jiang;Hui Zhang
中科院分区：
文献类型：
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作者：
Junfeng Xu;W. Hong;Z. Jiang;Hui Zhang
提出了一种低成本、结构简单的毫米波圆极化（CP）平面集成磁电偶极（ME-dipole）单元，采用可直接与Ka波段前端电路集成的低剖面馈电结构馈电。采用两个旋转对称的L形贴片代替原线极化ME偶极子的两个直臂，产生旋转电场，从而辐射CP波。在此基础上，研制了具有低剖面全共电馈电网络的2 × 2和4 × 4辐射体的共电阵列天线，无需任何附加介质层。这两个CP阵列天线的原型制作和测量。仿真结果与实测结果吻合较好，验证了两种设计方案的正确性。2 × 2阵列显示出|S11| < −10 dB相对带宽为34.67%，3 dB轴比带宽为11.33%，最大增益为13.12 dBic，而4 × 4阵列的相应性能分别为21.83%、5.9%和18.28 dBic。因此，它们可以是例如5G毫米波通信、Ka波段卫星通信等应用的良好候选者。
A low-cost millimeter-wave circularly polarized (CP) planar integrated magneto-electric dipole (ME-dipole) element with simple structure is proposed, which is fed by a low-profile feeding structure capable of being directly integrated with Ka-band front-end circuits. Two rotationally symmetrical L-shaped patches are adopted to replace the two straight arms of the original linearly polarized ME-dipole to generate a rotated electric field, thus radiating CP waves. Based on this CP ME-dipole element, CP array antennas containing 2 × 2 and 4 × 4 radiators with low-profile full-corporate feeding networks are developed without any additional dielectric layer. Prototypes of these two CP array antennas are fabricated and measured. Good agreement between the simulated and measured results is achieved, validating the correctness of these two designs. The 2 × 2 array exhibits a |S11| < −10 dB relative bandwidth of 34.67%, a 3 dB axial-ratio bandwidth of 11.33%, and a maximum gain of 13.12 dBic, while the corresponding performance of the 4 × 4 array is 21.83%, 5.9%, and 18.28 dBic, respectively. Thus, they can be good candidates for applications, for example, 5G millimeter-wave communications, Ka-band satellite communications, etc.