【作者】 赵程； 雷世文； 陈梦龙； 孙晓童； 孙凯； 陈波；

【Author】 Cheng Zhao;Shiwen Lei;Menglong Chen;Xiaotong Sun;Kai Sun;Bo Chen;University of Electronic Science and Technology of China;

【机构】 电子科技大学；

【摘要】 本文提出一种由直缝隙和一对旋转对称的弯曲缝隙组成的缺陷地结构,并用于双天线系统的解耦。此外,采用共模-差模理论对去耦原理进行了分析和解释。最后,将该结构蚀刻在天线间距为0.36λ₀（λ₀为2.5 GHz对应的自由空间波长）的两个微带天线间的地板上。相较于无缺陷地结构加载的阵列,S₂₁能够改善33 dB。同时,辐射方向图并未发生明显畸变。更多还原

【Abstract】 In this paper,a defected ground structure consisting of a straight gap and a pair of rotationally symmetrical curved gaps is proposed to reduce the mutual coupling of the dual-antenna system.In addition,the principle of decoupling is analyzed and explained by using common/differential mode theory.Finally,this structure is etched on the ground between two microstrip antennas with a center-to-center distance of 0.36 λ₀（where λ₀ is the free space wavelength at 2.5 GHz）.Compared to the array without this defected ground structure,S₂₁ can improve by 33 dB.At the same time,the radiation pattern is not significantly distorted.更多还原