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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。
An optimization design process of S-band beamforming array antenna is given. A 16-element linear array is formed side by side by the printed antenna array of the strip-shaped coupling structure. In order to make the radiation beam of the antenna reach the main lobe and sidelobe of a given pattern, the variable magnitude optimization algorithm combined with the DFP and BFGS formulas is adopted to optimize both the amplitude and the phase of the feed of each antenna of the array antenna, The influence of the mutual coupling between the units on the array was verified by the full-wave electromagnetic simulation software HFSS. The obtained pattern is in good agreement with the theoretical calculation. According to the result of simulation and optimization, the antenna array is fabricated and tested, and the test results obtained are in accordance with the simulation results.