Reduction of mutual coupling between closely-packed antenna elements using defected ground structure
Reduction of mutual coupling between closely-packed antenna elements using defected ground structure
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DOI：
10.1049/el.2009.0985
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发表时间：
2009-06
期刊：
影响因子：
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通讯作者：
F. Zhu;Jiadong Xu;Qian Xu
中科院分区：
文献类型：
--
作者：
F. Zhu;Jiadong Xu;Qian Xu
提出了一种简单的接地层结构，可以减少密集天线单元之间的互耦。该结构由一个哑铃状图案蚀刻在一个单一的接地平面。研究发现，两个共用一个接地层的平行独立平面倒F天线（PIFA）之间的隔离度可以达到−40 dB以上。与其他方法的比较表明，哑铃状缺陷接地结构（DGS）的独特能力，减少互耦合。研究了所设计的DGS对辐射方向图和接地层表面电流分布的影响。
A simple ground plane structure that can reduce mutual coupling between closely-packed antenna elements is proposed. The structure consists of a dumb-bell-like pattern etched in a single ground plane. It is found that isolation of more than −40 dB can be achieved between two parallel individual planar inverted F antennas (PIFAs) sharing a common ground plane. Comparison of the proposed dumb-bell-like defected ground structure (DGS) with other approaches shows its unique capability of reducing mutual coupling. Influence of the designed DGS on radiation pattern and surface current distribution on the ground plane is also investigated.