Yang Xueqing, Anselmi Nicola, Rocca Paolo
ELEDIA Research Unit, CNIT-University of Trento, Via Sommarive 9, 38123 Trento, Italy.
ELEDIA Research Center (ELEDIA@UniTN-University of Trento), DICAM-Department of Civil, Environmental, and Mechanical Engineering, Via Mesiano 77, 38123 Trento, Italy.
Sensors (Basel). 2025 Feb 12;25(4):1096. doi: 10.3390/s25041096.
The design of a thinned linear optical phased array (OPA) comprising a collection of waveguide grating antennas (WGAs) is addressed in this work. Given a fully populated linear OPA with antennas located in a uniform grid, the problem of selecting which elements have to be removed or retained is formulated as an optimization one. To this end, the definition of the optimal thinning architecture is produced through a multi-objective optimization strategy with the goal of minimizing the number of required antenna elements while maintaining a low sidelobe level and narrow beam width. A set of representative results is presented, also considering realistic WGA modeling to assess the capabilities and the potentialities of the proposed approach.
本文探讨了一种由波导光栅天线（WGA）集合组成的稀疏线性光学相控阵（OPA）的设计。对于一个天线位于均匀网格中的全填充线性OPA，选择哪些元件需要移除或保留的问题被表述为一个优化问题。为此，通过多目标优化策略来定义最优稀疏架构，目标是在保持低旁瓣电平和窄波束宽度的同时，尽量减少所需天线元件的数量。还给出了一组具有代表性的结果，同时考虑了实际的WGA建模，以评估所提方法的能力和潜力。
