Abstract
In this paper, an efficient power noise suppression method using power-and-ground (PG) via pair array in multilayered printed circuit boards (PCBs) is proposed. The power noise suppression performance is doubled by using both power and ground vias compared with the ground via array. The stopband bandwidth of the PG via pair array is derived. The evolvement from mushroom electromagnetic bandgap (EBG) structure to PG via pair array is demonstrated. The proposed method has overcome many shortcomings of the mushroom EBG structures. It is shown that the PG via pair array has excellent power noise suppression, signal integrity (SI), and electromagnetic compatibility (EMC) performance. It is a comprehensive power noise suppression scheme.
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