The present article proposes and validates a new general design methodology that can be used to automatically find proper positions and orientations of waveguide‐based radiating slots capable of realizing any given radiation beam profile. The new technique combines basic radiation theory and waveguide propagation theory in an analytical model that permits the prediction of the radiation characteristics of generic slots without the need to perform full‐wave numerical solution while completely avoiding using transmission‐line models or the slot impedance method. The analytical model is then used to implement a low‐cost objective function within a global optimization scheme and subsequently deployed to find optimum positions and orientations of clusters of radiating slots cut into the waveguide surface such that any desired beam pattern can be obtained, leading to very efficient and robust beamforming capability that can be applied to dynamic beamforming in real‐time scenarios like MIMO systems. The proposed design method is verified using both full‐wave numerical solution and experiment.

中文翻译：

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使用无限小偶极子模型技术的缝隙天线阵列合成：理论与实验

本文提出并验证了一种新的通用设计方法，该方法可用于自动找到能够实现任何给定辐射束轮廓的基于波导的辐射槽的正确位置和方向。这项新技术在分析模型中结合了基本辐射理论和波导传播理论，从而无需进行全波数值求解即可预测通用缝隙的辐射特性，同时完全避免使用传输线模型或缝隙阻抗方法。然后，将分析模型用于在全局优化方案内实施低成本目标函数，然后将其部署以找到切入波导表面的辐射槽簇的最佳位置和方向，从而获得任何所需的波束方向图，从而非常高效且强大的波束成形功能，可将其应用于MIMO系统等实时场景中的动态波束成形。通过全波数值解和实验对所提出的设计方法进行了验证。