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针对紧耦合展宽阵列天线带宽的原理,利用紧耦合阵列天线阻抗的变化规律,研究单元间强耦合与地板共同对天线阻抗的影响;结合已有文献中紧耦合等效电路的特性,提出了一种能够对应天线单元形状与尺寸的紧耦合等效电路模型。该等效电路模型较文献中已有的等效电路模型具有更强的准确性和适用性,能较好地反映天线模型阻抗曲线和驻波曲线,为优化该类天线阵列的前期设计提供了指导方向。
According to the principle of tightly coupled broadened array antenna bandwidth, the influence of the strong coupling between cells and the common ground on the antenna impedance is studied based on the variation of the impedance of the tightly coupled array antenna. Based on the characteristics of the tightly coupled equivalent circuit in the literature, A tightly coupled equivalent circuit model that corresponds to the shape and size of an antenna unit. The equivalent circuit model has more accuracy and applicability than the equivalent circuit model in the literature, which can well reflect the impedance curve and the standing wave curve of the antenna model, and provide an optimization for the pre-design of the antenna array Guidance.