标题： 利用粒子群优化探索相控阵的径向对称性 显示英文标题

标题： Exploring Radial Symmetry on Phased Arrays Using Particle Swarm Optimization

摘要： 相控阵天线能够实现动态波束成形，在非静止轨道（NGSO）卫星通信中至关重要，因为在这些系统中高效的波束分配非常重要。本研究专注于对由八个复制扇区组成的圆形孔径薄化相控阵天线。圆形孔径减少了有源元件的数量，降低了系统成本，并通过均匀分布能量提高了辐射性能，有助于降低旁瓣电平（SLL）。粒子群优化方法被用于解决薄化问题，处理了选择哪些元件应被激活的挑战。所得到的设计实现了-25.67 dB的SLL，优于之前具有-22.53 dB SLL降低的设计。获得的结果强调了圆形孔径相控阵天线改善波束质量、最小化干扰以及为NGSO卫星提供具有成本效益解决方案的潜力。 显示英文摘要

摘要： Phased antenna arrays enable dynamic beam shaping, which is essential for Non-Geostationary (NGSO) satellite communications where efficient beam distribution is important. This study focuses on thinning phased antenna arrays with circular apertures made up of eight replicated sectors. Circular apertures reduce the number of active elements, lowering system costs and improving radiation performance by evenly distributing energy, which helps to reduce Side Lobe Levels (SLL). Particle Swarm Optimization was used to approach the thinning problem, addressing the challenge of selecting which elements should be activated. The resulting design achieves an SLL of (-25.67 dB), outperforming previous designs with SLL reductions of (-22.53 dB). Achieved results underscore the potential of circular aperture phased arrays to improve beam quality, minimize interference, and deliver cost-effective solutions for NGSO satellites.