一种赋形阵列天线的优化设计

给出一种S 波段波束赋形阵列天线的优化设计过程，由带状耦合结构的印刷阵子天线并排组成16 元直线阵列。为使天线的辐射波束达到给定方向图的主瓣和副瓣要求，采用联合应用DFP 和BFGS 公式的变度量优化算法，对阵列天线各单元的馈电幅度和相位同时进行优化，并考虑阵列中各单元之间的互耦对阵列的影响，通过全波电磁仿真软件HFSS 进行了验证，所得的方向图与理论计算十分吻合。根据仿真优化的结果，制作了天线阵实物并进行了测试，得到的测试结果与仿真结果一致。

Optimization Design of a Array Antenna with Shaped Beam

Optimization and design process for a S-band shaped beam array antennas is presented. This array consisted of16 parallel printed dipoles. In order to form a given three-dimensional antenna pattern for array antennas, variable metricalgorithms, Davidon-Fletcher-Powell(DFP) and Broyden-Fletcher- Goldfarb- Shanno (BFGS) were jointly used to optimize theamplitude and phase distribution of the current excitations. By the using of the full-wave EM field simulator-HFSS, somesimulation of the linear array was obtained taking into account of the mutual coupling in array, and Patterns obtained are in a good agreement with the pre-numerical results, According to the results of simulation and optimization, antenna array wasproduced and tested, these results reach a good agreement with the simulation.