Method and device and communication equipment of reducing interference of clock on radio frequency system

Abstract

The invention discloses a method and a device and communication equipment of reducing interference of a clock on a radio frequency system. The method is used for reducing the interference of the clock of the communication equipment on the radio frequency system and comprises obtaining center frequency of a signal channel which builds connection with the communication equipment and network, obtaining frequency of a bus clock of the communication equipment, and naming secondary clock frequency, comparing the center frequency and the secondary clock frequency, obtaining a comparing result, when the comparing result is the center frequency and frequency doubling of the secondary clock frequency, controlling bus clock frequency hopping, and enabling the center frequency not to be on the frequency doubling of the secondary clock frequency. By adoption of the technical scheme, interference of a harmonic component of a secondary clock on the radio frequency system can be removed, and the receiving performance of the radio frequency system is prevented from decreasing.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, to a method and device for reducing clock interference to a radio frequency system, and communication equipment. Background technique [0002] The clock source will generate abundant harmonic components. When the RF system works on the multiplied channel of the clock source, the harmonic components of the clock source will have a serious impact on the receiving performance of the RF system. For example, see figure 1 , the mobile phone has a clock source 10 with a frequency of f0 (mostly 26MHz at present), and the f0 clock source generates 12 with a frequency of f1 (mostly 12MHz at present) and a frequency of f2 (mostly 13MHz at present) through clock distribution. The bus clock frequency fi of the camera, display screen, USB interface, memory, SD card and other devices is based on f1 or f2 as the reference clock source, and is obtained through frequency multiplication by ...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method, device and communication equipment for reducing the clock source interference to the radio frequency system, which are used to solve the problem in the prior art that the solution to the interference of the clock source to the radio frequency system is not ideal

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