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

A technology for communication equipment and radio frequency systems, applied in the field of communication, can solve problems such as unsatisfactory solutions, and achieve the effect of avoiding the degradation of reception performance and eliminating interference

Inactive Publication Date: 2013-06-12
LENOVO MOBILE COMM TECH
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  • Abstract
  • Description
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  • Application Information

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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

Method used

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

Examples

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[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0026] figure 2 A main flow chart showing a method for reducing clock interference to a radio frequency system according to an embodiment of the present invention.

[0027] see figure 2 As shown, methods to reduce clock interference to radio frequency systems include:

[0028] S101: Obtain the center frequency of the channel through which the communication device establishes a connection with the network;

[0029] S103: Obtain the frequency of the bus clock of the communication device, which is called the secondary clock frequency;

[0030] S105: Comparing the central frequency with the secondary clock frequency to obtain a comparison result;

[0031] S107: When the comparison result is that the central frequency is a multiple of the secondary...

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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 ...

Claims

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Application Information

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IPC IPC(8): H04B1/10
Inventor 肖声亮林金强郑煊杨万丽
Owner LENOVO MOBILE COMM TECH
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