矩形电源板在PMC边界条件下的目标阻抗分析

摘要

Aiming at the noise problems from the power supply in high speed circuit, a target impedance formula for rectangular power ground plane is deduced in this paper. The voltage distribution is obtained to accurately determine the global capacitance loading position, references for reducing the noise for PCB.%针对高速电路中电源地噪声问题,推导出矩形电源地平面的目标阻抗公式,得到电压场的分布规律,进而准确确定全局电容的加载位置,为降低PCB的电源地噪声提供理论依据.