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    FREQUENCY SYNTHESIZED TRANSCEIVER
    14.
    发明申请
    FREQUENCY SYNTHESIZED TRANSCEIVER 审中-公开
    频率合成收发器

    公开(公告)号：WO1982003477A1

    公开(公告)日：1982-10-14

    申请号：PCT/US1982000392

    申请日：1982-03-30

    Applicant: MOTOROLA INC

    Inventor： MOTOROLA INC ,  BORRAS JAIME ANDRES ,  GONZALEZ RUBEN JESUS ,  SMITH DANIEL MARTIN ,  WIECZOREK ALFRED BRUNO ,  SUAREZ JOSE IGNACIO ,  VICTOR ALAN MICHAEL ,  POPEK MARC HOWARD

    IPC: G06F07/38

    CPC classification number: H03C3/0966 ,  H03C3/0933 ,  H03C3/0941 ,  H03C3/0958 ,  H03C3/227 ,  H03D13/005 ,  H03J5/0281 ,  H03K23/66 ,  H03K23/667 ,  H03L7/0802 ,  H03L7/193 ,  H03L7/199 ,  H04B1/405

    Abstract: A frequency synthesized transceiver capable of tuning to a plurality of communication channels. The transceiver includes a receiver section (72) and a transmitter section (74) which are coupled to the synthesizer which generates the appropriate injection signals to achieve tuning. The frequency synthesizer includes a multiposition switch (52, 200) which accesses various addressable memory locations in a programmable read-only (60) where the appropriate divisors are stored to cause tuning of the synthesizer to the appropriate communication channel. A zone selector switch (202) enables grouping and easy retrievability of channels. The divisors are supplied to a single synchronous binary swallow counter (46) which works in conjunction with a dual modulus prescaler (44) to monitor the frequency output of the voltage controlled oscillator (42). A programmable divider (32) coupled to a reference oscillator source (30) is compared with the output of the synchronous counter in a digital and analog phase detector (34). The phase detector (34) supplies signals through a loop filter (40) to apply the appropriate voltage to the voltage controlled oscillator (42). The phase detector (34) includes means to rapid advance the voltage controlled oscillator to cause frequency tuning.

    Abstract translation: 一种能够调谐到多个通信信道的频率合成收发器。 收发器包括接收器部分（72）和发射器部分（74），其耦合到合成器，其产生适当的注入信号以实现调谐。 频率合成器包括一个多位开关（52,200），该多位开关访问可编程只读（60）中的各种可寻址存储器位置，其中存储适当的除数以使合成器调谐到合适的通信信道。 区域选择器开关（202）使得能够分组并且容易地检索通道。 除数被提供给与双模预分频器（44）一起工作以监视压控振荡器（42）的频率输出的单个同步二进制吞咽计数器（46）。 耦合到参考振荡器源（30）的可编程分频器（32）与数字和模拟相位检测器（34）中的同步计数器的输出进行比较。 相位检测器（34）通过环路滤波器（40）提供信号，以将适当的电压施加到压控振荡器（42）。 相位检测器（34）包括快速前进压控振荡器以引起频率调谐的装置。

    A RECEIVER SYSTEM FOR ELIMINATING SELF-QUIETING SPURIOUS RESPONSES.
    15.
    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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