论文名称为“V-band wideband circularly polarized endfire multibeam antenna with wide beam coverage”。作者提出了一种高效设计稀疏近场聚焦稀疏阵列天线的方法。首先，建立了方形网格、圆形网格和正三角形网格三种阵列拓扑的计算模型和分析方法。当稀疏阵列的聚焦性能接近半波长单元间距的参考聚焦阵列时，评价准则为阵列的稀疏性。通过比较不同网格阵列天线的聚焦性能，选择圆形网格阵列为最优聚焦方式，进一步讨论不同拓扑参数的影响。最后，利用该方法设计了稀疏近场聚焦稀疏阵列，并用全波仿真结果验证了该方法的正确性。工作主要完成人为杨晓琳，程钰间。

论文链接： https://ietresearch.onlinelibrary.wiley.com/doi/10.1049/iet-map.2018.6193

Abstract—The method to efficiently design a sparse near-field focusing sparse array antenna is introduced here. First, the calculation model and analysis method of three array topologies including the square grid, the circular grid, and the regular triangular grid are established. The evaluation criterion is the lowest sparsity under the condition that the focusing performance of the sparse array approaches to that of a referenced focusing array with the element spacing of a half of one wavelength. After comparing the focusing performance of these array antennas with different grids, the circular-grid array is the optimal one and selected to further discuss the influence of different topology parameters. The optimal sparse near-field focusing array should have the constant distance between two adjacent rings and increase three elements compared with the last ring. Finally, the method based on the proposed selection criteria is employed to design a sparse near-field focusing sparse array. The correctness of the method has been validated by the full-wave simulated results.