【作者】 刘畅； 阙肖峰； 赖林；

【Author】 Chang Liu;Xiaofeng Que;Lin Lai;University of Electronic Science and Technology of China;

【机构】 电子科技大学；

【摘要】 在超表面设计过程中,需要通过电磁反演获得超表面口径上切向电磁场分量从而满足计算需求。本文研究了共轭梯度算法在电磁反演问题中的应用。使用改进的共轭梯度算法求解得到等效电流、磁流源,并通过引入Love条件约束,简化虚拟电磁流源和虚拟表面切向电磁场的联系。仿真结果数据表明,加入约束条件后反演所得超表面等效电流磁流源对应辐射远场与目标远场较为吻合。更多还原

【Abstract】 In the process of metasurface design,it is necessary to obtain the tangential electromagnetic field components on the metasurface aperture through electromagnetic inversion to meet the computational requirements.This paper studies the application of the conjugate gradient algorithm in electromagnetic inversion problems.The equivalent current and magnetic current sources are obtained by using the improved conjugate gradient algorithm,and the connection between the virtual electromagnetic current source and the tangential electromagnetic field of the virtual surface is simplified by introducing the Love condition constraint.The simulation result data show that after adding the constraint conditions,the radiation far-field corresponding to the metasurface equivalent current flux source obtained by inversion is relatively consistent with the target far-field.更多还原