公开(公告)号：US20150171842A1

公开(公告)日：2015-06-18

申请号：US14562003

申请日：2014-12-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jincan Cao

IPC: H03K5/01

CPC classification number: H03K5/01 ,  H03K5/1252 ,  H03K5/135

Abstract: An electromagnetic interference (EMI) control method to adjust initial clock phases of radiation sources of an electronic device, so as to control EMI of the electronic device. The EMI control method includes determining positions of radiation sources; determining a preset angle of the radiation sources; calculating an initial phase difference by position between the radiation sources according to the positions of the radiation sources and the preset angle of the radiation sources; calculating, according to the initial phase difference by position, determined initial clock phases of the radiation sources when a far-field superimposed field strength is a limiting value; and configuring a phase-adjustable clock driver of the electronic device using the determined initial clock phases, so as to adjust initial clock phases of the radiation sources to the determined initial clock phases.

Abstract translation: 一种用于调整电子设备的辐射源的初始时钟相位的电磁干扰（EMI）控制方法，以便控制电子设备的EMI。 EMI控制方法包括确定辐射源的位置; 确定辐射源的预设角度; 根据辐射源的位置和辐射源的预设角度，计算辐射源之间的位置的初始相位差; 根据初始相位差计算当远场叠加场强为极限值时辐射源的初始时钟相位; 以及使用所确定的初始时钟相配置所述电子设备的相位可调时钟驱动器，以便将所述辐射源的初始时钟相位调整到所确定的初始时钟相位。