一种新型EBG结构的设计

Design of a New EBG Structure

电源平面和接地平面之间的同步开关噪声(SSN)是现代高速数字电路设计和应用的瓶颈之一。而现有的抑制SSN的方法各有不足,不能有效抑制SSN。电磁带隙结构(EBG)因其良好的禁带特性,提供了一种有效抑制SSN的新途径。因此提出了一种新型的二维电磁带隙结构(EBG)设计来抑制SSN。通过HFSS的仿真该EBG结构,可以发现,新型EBG结构的禁带中心频率为3.7GHz,在抑制深度为-30dB时,该EBG结构的阻带宽度为6.6GHz,能够有效的抑制0.4GHz〜7.0GHz的SSN。

The simultaneous switching noise(SSN)between power and ground planes is one of the bottlenecks in th modem high-speed digital circuit design and applicat—ion.But SSN suppression of the existing methods have deficiencies,can not eff-ectively inhibit the SSN.Electromagnetic bandgap(EBG)structure because of their good features,provides an effective new way to suppress SSN.This article presents a new two-dimensional EBG structure to suppress the SSN.By HFSS simulation of the EBG structure can be found,The center frequency of the new structure is 3.7GHz,depth is-30dB in the inhibition,the stopband EBG structure for the 6.6GHz,can effectively inhibit the SSN among 0.4GHz-7.0GHz.