新型宽带小型化微带天线

doi:10.3969/j.issn.1001-2400.2017.04.009

摘要/Abstract

摘要：

研究了低剖面单层微带贴片天线频带展宽的方法，设计了一种新型加载哑铃型缺陷地结构单层贴片天线．天线主要由矩形贴片和C形缝隙加载的寄生贴片构成．通过对寄生贴片的谐振特性分析，确定了寄生贴片的尺寸，再利用刻蚀缝隙和缺陷地结构展宽天线带宽．利用Ansoft高频结构仿真软件对该贴片天线进行仿真．仿真计算结果表明，这种方法可以有效地展宽天线频带，天线的带宽从500MHz展宽到1000MHz．与传统单层微带天线相比，此天线尺寸更小，重量更轻，纵向尺寸更低，应用于阵列设计时能够减小单元间的互耦．天线基板采用了单层RF4材料，便于在工业制作中推广应用．

关键词: 微带天线, 寄生贴片, 缺陷地结构, 宽带小型化

Abstract:

The method of broadening the bandwidth of the low-profile single patch antenna is studied. A novel rectangle-shape broadband signal patch antenna using the dumbbell-shape Defect Ground Structure (DGS) is proposed in this paper. The antenna consists mainly of the rectangle patch and two surrounding parasitic patches with a C-shaped slot. The resonance characteristics of the parasitic patches are analyzed to determine the dimension of the parasitic patches, and then taking advantage of the gap in etching and DGS, the bandwidth of the antenna is widened. This patch antenna is calculated by Ansoft HFSS. The results validate the proposed approach, which helps the improvement of the bandwidth of the antenna from 500MHz to 1000MHz. Compared with the typical microstrip antenna, the proposed antenna is compact in size, light in weight, and low in longitudinal dimension. The designed antenna is suitable for the design of an array to reduce the coupling among array elements. The substrate of the antenna is the signal layer RF4, and it can be applied in industrial production expediently.

Key words: microstrip antenna, parasitic patch, defect ground structure, miniaturized broadband

郑庚琪;孙保华. 新型宽带小型化微带天线[J]. 西安电子科技大学学报, 2017, 44(4): 47-50+137.

ZHENG Gengqi;SUN Baohua. Design of a novel miniaturized broadband microstrip antenna[J]. Journal of Xidian University, 2017, 44(4): 47-50+137.

参考文献

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