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本文提出的是一种基于平面型EBG(Electromagnetic Bandgap)结构的创新型结构,对于同步开关噪声(Simultaneous Switching Noise,SSN)的抑制有更优秀的特性。我们设计的这款新型EBG结构,是在周期性L-bridge EBG结构的基础上,在一些单元内插小型的L-bridge EBG。通过仿真验证,此结构具有传统型L-bridge EBG结构所不具有的超带宽抑制能力和较大的抑制深度。然后我们运用电路模型和平行板谐振腔原理分析了该结构上下变频。另外,通过3-D仿真,得到结构的IR-Drop和直流阻抗。最后,通过眼图验证该结构的信号传输特性。
This paper presents an innovative structure based on the planar EBG (Electromagnetic Bandgap) structure, which has better performance for suppressing the SSN (Simultaneous Switching Noise). The new EBG structure we designed is based on the periodic L-bridge EBG structure, which interpolates small L-bridge EBGs in some cells. The simulation results show that this structure has the superior capability of suppressing the ultra-bandwidth and the greater depth of suppression than the traditional L-bridge EBG structure. Then we use the circuit model and parallel plate resonator principle analysis of the structure up and down frequency. In addition, IR-Drop and DC resistance of the structure are obtained by 3-D simulation. Finally, verify the signal transmission characteristics of the structure by eye diagram.