Meandered Inductor Shape of DGS for Coupling Suppression Between Adjacent Elements of Array Antenna

M. Yunus, Prama Artha Nugraha, Waryari, H. Nusantara, A. Munir
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引用次数: 7

Abstract

Defected ground structure (DGS) has been recently applied to enhance the bandwidth and gain of microstrip antenna, as well as to effectively improve the radiation characteristics by suppressing the higher mode harmonics and coupling between adjacent elements of array antenna. This paper presents the use of DGS which takes meandered inductor (MI) shape to improve the return loss ($S_{11}$) and to suppress the coupling between adjacent elements ($S_{21}$) of array antenna. An FR4 epoxy dielectric substrate with the thickness of 1.6 mm is used for deploying the antenna. The MI shape slot is embedded on the groundplane at the bottom side of dielectric substrate between two elements of array antenna which are deployed on the top side. The simulated results show that values of $S_{11}$ and $S_{21}$ have been improved up to 4.4 dB and 1.9 dB, respectively, at the resonant frequency of 2 GHz. This is comparable with the measured results which have achievement up to 8 dB and 5 dB for $S_{11}$ and $S_{21}$, respectively.
阵列天线相邻单元间耦合抑制的DGS弯曲电感形状
近年来,有缺陷地结构(DGS)被用于提高微带天线的带宽和增益,并通过抑制阵列天线的高模次谐波和相邻单元之间的耦合来有效改善天线的辐射特性。本文介绍了采用弯曲电感(MI)形状的DGS来改善阵列天线的回波损耗($S_{11}$)和抑制相邻元件($S_{21}$)之间的耦合。天线采用厚度为1.6 mm的FR4环氧介电基板展开。所述MI形槽嵌入在所述顶部部署的阵列天线的两个元件之间的介电基板底部的接平面上。仿真结果表明,在2 GHz谐振频率下,$S_{11}$和$S_{21}$的值分别提高了4.4 dB和1.9 dB。这与测量结果相当,分别为$S_{11}$和$S_{21}$,分别达到8db和5db。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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