Defected ground structures (DGS) are certain structures with artificially etched units that alter current distribution on the metallic plane of microwave circuit, and the transmission lines with DGS could behave characteristic of prohibition in special frequency range.
缺陷接地结构(DGS)是通过在微波电路底面的金属接地板蚀刻“缺陷”,改变接地板上的电流分布,从而使整个微波电路在特定频段处表现出禁带特性的电路结构。
参考来源 - 神经网络在缺陷接地结构最优化设计中的应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
V-T If a line or pattern is etched into a surface, it is cut into the surface by means of acid or a sharp tool. You can also say that a surface is etched with a line or pattern. 蚀刻; 凿刻
Crosses were etched into the walls.
十字架被凿刻在了墙上。
Windows are etched with the vehicle identification number.
窗户被凿刻上了车辆识别号码。
V-T PASSIVE If something is etched on your memory, you remember it very clearly, usually because it has some special importance for you. 铭刻 (在记忆中) [文学性]
The ugly scene in the study was still etched on her mind.
书房中丑陋的一幕仍然铭刻在她的脑海中。
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