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RF front-end adjacent channel interference suppression circuit and wlan access equipment

An adjacent channel interference and radio frequency front-end technology, applied in the field of radio frequency front-end adjacent channel interference suppression circuits and WLAN access equipment, can solve problems such as deteriorating receiving sensitivity, and achieve the goal of avoiding receiving sensitivity, improving signal receiving sensitivity, and suppressing adjacent channel interference. Effect

Active Publication Date: 2019-12-31
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of realizing the present invention, the inventor found that there is a problem of degrading the receiving sensitivity in the traditional anti-jamming technology

Method used

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  • RF front-end adjacent channel interference suppression circuit and wlan access equipment
  • RF front-end adjacent channel interference suppression circuit and wlan access equipment
  • RF front-end adjacent channel interference suppression circuit and wlan access equipment

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Embodiment Construction

[0046] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0047] The radio frequency front-end adjacent channel interference suppression circuit provided by this application can be applied to such as figure 1RF front-end shown. Wherein, the signal demodulation module 102 and the radio frequency front-end transceiver module 104 communicate through the signal receiving link, and the radio frequency front-end adjacent channel interference suppression circuit can be connected between the signal demodulation module 102 and the radio frequency front-end transceiver module 104, The adjacent channel interference suppression is performed...

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PUM

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Abstract

The application relates to a radio frequency front-end adjacent channel suppression circuit. The radio frequency front-end adjacent channel suppression circuit comprises an amplification filtering module, a local oscillator circuit, a down-conversion unit, an interference suppression module and an up-conversion unit in communication connection in order; the amplification filtering module is used for communicating and connecting a radio frequency front-end transceiving module; and the upper-conversion unit is used for communicating and connecting a signal demodulation module. The application further discloses WLAN access equipment. By arranging the amplification filtering module, the local oscillator circuit, the down-conversion unit, the interference suppression module and the up-conversion module, the signal intensity of the adjacent channel interference signal after the intermediate frequency is suppressed after a received radio frequency signal is down-converted to an intermediate frequency signal; and then, the intermediate signal after interference suppression is up-converted back to the radio frequency signal, thereby obtaining the radio frequency after effectively suppressing the adjacent channel interference to send to the signal demodulation module to demodulate. Therefore, the adjacent channel interference can be effectively suppressed without adding insertion loss ona receiving link, and the signal receiving sensitivity is greatly improved.

Description

technical field [0001] The present application relates to the technical field of communication, in particular to a radio frequency front-end adjacent channel interference suppression circuit and WLAN access equipment. Background technique [0002] With the development of network technology, frequency point planning is required when WLAN equipment engineering is deployed. However, when two wireless access points (Wireless Access Point, AP) use adjacent frequency points and are placed relatively close to each other, the signals of the two APs often interfere with each other, deteriorating the signal receiving sensitivity, and ultimately affecting the service rate. . Adjacent channel interference (ACS) is a relatively important test item in the centralized procurement bidding test of wireless local area network (WLAN) AP equipment in the industry. [0003] In the market, WLAN baseband and radio frequency chips basically adopt the SOC solution. However, SOC chip manufacturers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/525H04B1/10H04B1/12H04B1/04H04W88/08
CPCH04B1/0475H04B1/1036H04B1/12H04B1/525H04B2001/0491H04B2001/1045H04B2001/1072H04W88/08
Inventor 袁嘉智
Owner COMBA TELECOM SYST CHINA LTD
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