EMI control method and apparatus, and electronic device

摘要

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.

主权项

1. An electromagnetic interference control method used to control electromagnetic interference of an electronic device, wherein the electronic device comprises a board, at least two radiation sources, and a phase-adjustable clock driver, the at least two radiation sources and the phase-adjustable clock driver are disposed on the board, the method comprising:
determining positions of the at least two radiation sources on the board; determining a preset angle of the at least two radiation sources; calculating an initial phase difference by position between the at least two radiation sources according to the positions of the at least two radiation sources on the board and the preset angle of the at least two radiation sources; calculating, according to the initial phase difference by position between the at least two radiation sources, determined initial clock phases of the at least two radiation sources when a far-field superimposed field strength is a limiting value; and configuring the phase-adjustable clock driver using the determined initial clock phases.