基于构形树的圆盘状电源板设计  

The Constructal Optimization for Tree-shaped Structures on a Disc Power Plane

作　　者：郭巍[1] 黄惠芬[1] 

机构地区：[1]华南理工大学电子与信息学院,广州510641

出　　处：《新型工业化》2011年第2期62-72,共11页The Journal of New Industrialization

基　　金：博士点基金新教师基金:(D1090110);国家自然科学基金:(B5101730)

摘　　要：随着电子设备越来越高速化、小型化,电子之间的相互干扰也越来越严重,其中电源板上的干扰对系统的稳定工作影响更是严重,如何提供稳定的电源供电系统成为了研究的关键。传统方法通过加去耦电容来抑制电源板上的电磁干扰,但当频率偏高时效果不理想,近期采用电磁带隙结构(EBG)来抑制电源板上的电磁干扰成为研究热点,但是这些结构未考虑电源电压降问题。本文运用构形理论的方法设计了一种树形圆盘电源板,这种电源板具有低的电源电压降、小型化和宽带噪声抑制特性。In this paper, a disc-shaped power tree is constructed for optimal DC performance. Given are the entire disc area and the structure of the tree. The conductivity path number N connecting with the center point source, the radial distance ratio, the area fraction and the number of pairing levels n are f^ee to vary. The effect for parameters on resistance is investigated and the optimal parameters are obtained. The complexity of the tree increases because n increases and a more complex structure is beneficial for flow, but there exists a modest （not maximal） complexity. In the meantime, a disc power plane is designed based on the designed disc-shaped power tree. The disc power plane has multi-functions of equidistribution, low voltage drop, compactness and wideband noise isolation while maintaining a relatively simple design of geometry. Compared with leaf vein power plane, the disc power plane based on two pairing levels has smaller resistance and voltage drop than leaf vein power plane based on the same level assembled vein tree.

关 键 词：电磁兼容 构形理论 电源电压降 信号完整性 

分 类 号：TN41[电子电信—微电子学与固体电子学]