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    A RECEIVER SYSTEM FOR ELIMINATING SELF-QUIETING SPURIOUS RESPONSES.
    14.
    发明公开
    A RECEIVER SYSTEM FOR ELIMINATING SELF-QUIETING SPURIOUS RESPONSES. 失效
    接收器系统用于自动静音通过对噪声敏感的响应处置。

    公开(公告)号：EP0144394A4

    公开(公告)日：1985-12-30

    申请号：EP84902256

    申请日：1984-05-14

    Applicant: MOTOROLA INC

    Inventor： VICTOR ALAN MICHAEL ,  DAVIS DARRELL EUGENE

    IPC: H03D7/16 ,  H03J5/02 ,  H04B20060101 ,  H04B1/26

    CPC classification number: H03J5/0281 ,  H03D7/163

    Abstract: A multiple conversion superheterodyne receiver system (200) includes a first frequency synthesizer (230) capable of generating any one of a number of predetermined first local oscillator frequencies for mixing with an incoming signal to produce a first intermediate frequency. A second frequency synthesizer (235) selectively generates any one of two local oscillator frequencies corresponding to either high side or low side injection to be mixed with first intermediate frequency producing an appropriate second intermediate frequency. A frequency selecting circuit (260, 255, 250) is operatively coupled to the first and second frequency synthesizer (230, 235) for selecting an appropriate one of the first local oscillator freqencies to tune the receiver to a desired channel and for selecting an appropriate one of the second local oscillator frequencies for avoiding receiver self-quieting spurious responses.

    Abstract translation: 一种多变频超外差接收机的系统（200）包括第一频率合成器（230）能够产生多个预定第一本机振荡器的频率中的任何一个用于与输入信号混合，以产生第一中频。 第二频率合成器（235）选择性基因的速率在两个本地振荡器频率的对应要么高侧或低侧注入任一个与第一中频在适当的第二中间频率产生混合。 频率选择电路（260，255，250）被可操作地耦合到所述第一和第二频率合成器（230，235），用于在所述第一本地振荡器freqencies将接收机调谐到所希望的信道的适当的一个选择和设计的适当选择 第二本机振荡器的频率，以避免接收器自静默杂散响应中的一个。

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