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RADIO RECEIVER, INTERFERENCE REMOVING CIRCUIT BUILT IN THE RECEIVER, AND INTERFERENCE REMOVING METHOD USING THE INTERFERENCE REMOVING CIRCUIT

机译:无线电接收机,接收机中内置的干扰消除电路以及使用干扰消除电路的干扰消除方法

摘要

PROBLEM TO BE SOLVED: To obtain a demodulation output which is free of interference by removing interference components caused by adjacent stations above and below a desired station which are included in an IF signal of a radio receiver.;SOLUTION: The radio receiver can generate an audio signal of the desired station free of interference caused by the adjacent stations by generating a USB and an LSB of the desired station and also generating a USB of the adjacent disturbing station above the desired station and an LSB of the adjacent disturbing station below the desired station by detecting the IF signal from a front end 3 by three synchronous detecting circuits 5, 25 and 35 after digital conversion, removing a component of the upper adjacent disturbing station included in the USB of the desired station by subtracting the USB of the upper adjacent disturbing station from the USB of the desired station, and removing a component of the lower adjacent disturbing station included in the LSB of the desired station by subtracting the LSB of the lower adjacent disturbing station from the LSB of the desired station.;COPYRIGHT: (C)2010,JPO&INPIT
机译:要解决的问题:要通过消除无线电接收机的IF信号中包括所需电台上方和下方的相邻电台所引起的干扰分量来获得无干扰的解调输出;解决方案:无线电接收机可以生成一个通过生成所需站点的USB和LSB,并在所需站点上方生成相邻干扰站点的USB,并在所需站点以下生成相邻干扰站点的LSB,从而消除相邻站点造成的干扰的所需站点的音频信号通过在数字转换之后通过三个同步检测电路5、25和35检测来自前端3的IF信号,通过减去上位相邻USB的USB,去除期望站的USB中包括的上位相邻干扰基站的分量从所需站点的USB干扰站点,并删除LS中包含的下部相邻干扰站点的组件通过从所需站点的LSB中减去下一个相邻干扰站点的LSB来获得所需站点的B。版权所有:(C)2010,JPO&INPIT

著录项

  • 公开/公告号JP2010178227A

    专利类型

  • 公开/公告日2010-08-12

    原文格式PDF

  • 申请/专利权人 FUJITSU TEN LTD;

    申请/专利号JP20090020918

  • 发明设计人 NAKAI HIDEO;

    申请日2009-01-30

  • 分类号H04B1/10;H04B1/26;

  • 国家 JP

  • 入库时间 2022-08-21 19:06:20

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