多波束阵列天线的稀疏化设计  

Design of Sparse Multi⁃beam Antenna Array

作　　者：张伟[1] 文舸一[1] ZHANG Wei;WEN Geyi(Research Center of Applied Electromagnetics,Nanjing University of Information Science and Technology,Nanjing,210044,CHN)

机构地区：[1]南京信息工程大学应用电磁学研究中心,南京210044

出　　处：《固体电子学研究与进展》2021年第2期125-131,共7页Research & Progress of SSE

基　　金：国家自然科学基金资助项目(61971231)。

摘　　要：讨论利用加权最大功率传输效率法(Weighted method of maximum power transmission efficiency,WMMPTE)实现多波束阵列天线的稀疏化,使得天线单元数目小于天线波束数数目。待设计天线与置于波束方向的测试天线形成无线功率传输系统,再利用WMMPTE优化可得到多波束阵列天线的最优激励分布。根据最优激励分布可进行阵列单元的稀疏化。通过工作频率为5.8 GHz的一维直线阵列和二维平面阵列为例介绍了稀疏化设计过程。模拟和实验表明,经WMMPTE优化后,利用3单元天线阵列可以实现4个波束、8单元天线阵列可以实现9个波束。The weighted method of maximum power transmission efficiency(WMMPTE)was discussed to achieve sparse multi-beam antenna array in this paper,so that multiple beams could be re⁃alized with less number of array elements than that of beams.The array to be designed and the tested receiving antennas placed in the beam directions form a wireless power transmission system.The opti⁃mal distribution of excitations for the multi-beam antenna array can be obtained by WMMPTE,based on which a sparse array can be built.The design process of sparse array is illustrated through one-di⁃mensional linear array and two-dimensional planar array,both operating at 5.8 GHz.Simulation and experimental results indicate that,after optimization with WMMPTE,a 3-element antenna array can achieve 4 beams and an 8-element array antenna can achieve 9 beams.

关 键 词：多波束天线阵列 加权最大功率传输效率法 稀疏化阵列 馈电网络 

分 类 号：TN82[电子电信—信息与通信工程]