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    Frequency synthesizer for broadcast telephone system having multiple assignable frequency channels
    33.
    发明授权
    Frequency synthesizer for broadcast telephone system having multiple assignable frequency channels 失效
    具有多个可分配频道的广播电话系统的频率合成器

    公开(公告)号：US4862107A

    公开(公告)日：1989-08-29

    申请号：US211758

    申请日：1988-06-27

    申请人： Eric Paneth

    发明人： Eric Paneth

    IPC分类号： H03L7/23

    CPC分类号： H03L7/23

    摘要： In a broadcast telephone system for communicating information signals over an assigned frequency channel, the combination of a synthesizer for generating a signal at the assigned frequency and a PROM storing a plurality of sets of first and second signals associated with different predetermined assignable frequencies. The synthesizer includes a first phase-locked loop for generating an output signal at a frequency within a first predetermined range including the plurality of assignable frequencies in response to the combination of a first frequency reference signal having a predetermined frequency and a second reference frequency signal having a frequency within a second predetermined range and derived from a second phase-locked loop a second phase-locked loop for generating a third reference frequency signal within a third predetermined range in response to a combination of a first signal from the PROM associated with a given assignable frequency and a fourth frequency reference signal having a predetermined frequency; and a frequency divider coupled to the PROM for dividing the frequency of the output signal from the second phase-locked loop by an amount indicated by a second signal from the PROM associated with said given assignable frequency to provide the second reference signal to the first phase-locked loop. The phase-locked loops each include a minimizing phase noise and electronic noise due to microphonics.

    摘要翻译： 在用于在分配频道上传送信息信号的广播电话系统中，用于产生分配频率信号的合成器和存储与不同预定可分配频率相关联的多组第一和第二信号的PROM的组合。 合成器包括第一锁相环，用于响应于具有预定频率的第一频率参考信号和具有预定频率的第二参考频率信号的组合而产生包括多个可分配频率的第一预定范围内的频率的输出信号，该第二参考频率信号具有 在第二预定范围内的频率，并且从第二锁相环导出第二锁相环，用于响应于来自与给定的相关联的PROM的第一信号的组合，在第三预定范围内产生第三参考频率信号 可分配频率和具有预定频率的第四频率参考信号; 耦合到PROM的分频器，用于将来自第二锁相环的输出信号的频率除以由与所述给定可分配频率相关联的PROM的第二信号指示的量，以将第二参考信号提供给第一相位 锁定环。 锁相环各自包括最小化相位噪声和由于麦克风引起的电子噪声。

    Frequency synthesizer for broadcast telephone system having multiple assignable frequency channels
    34.
    发明授权
    Frequency synthesizer for broadcast telephone system having multiple assignable frequency channels 失效
    具有多个可分配频道的广播电话系统的频率合成器

    公开(公告)号：US4785260A

    公开(公告)日：1988-11-15

    申请号：US840908

    申请日：1986-03-18

    申请人： Eric Paneth

    发明人： Eric Paneth

    IPC分类号： H03L7/22 ,  H03L7/093 ,  H03L7/23 ,  H04B1/04 ,  H04J1/00 ,  H03L7/00

    CPC分类号： H03L7/23

    摘要： In a broadcast telephone system for communicating information signals over an assigned frequency channel, the combination of a synthesizer for generating a signal at the assigned frequency and a PROM storing a plurality of sets of first and second signals associated with different predetermined assignable frequencies. The synthesizer includes a first phase-locked loop for generating an output signal at a frequency within a first predetermined range including the plurality of assignable frequencies in response to the combination of a first frequency reference signal having a predetermined frequency and a second reference frequency signal having a frequency within a second predetermined range and derived from a second phase-locked loop a second phase-locked loop for generating a third reference frequency signal within a third predetermined range in response to a combination of a first signal from the PROM associated with a given assignable frequency and a fourth frequency reference signal having a predetermined frequency; and a frequency divider coupled to the PROM for dividing the frequency of the output signal from the second phase-locked loop by an amount indicated by a second signal from the PROM associated with said given assignable frequency to provide the second reference signal to the first phase-locked loop. The phase-locked loops each include a minimizing phase noise and electronic noise due to microphonics.

    摘要翻译： 在用于在分配频道上传送信息信号的广播电话系统中，用于产生分配频率信号的合成器和存储与不同预定可分配频率相关联的多组第一和第二信号的PROM的组合。 合成器包括第一锁相环，用于响应于具有预定频率的第一频率参考信号和具有预定频率的第二参考频率信号的组合而产生包括多个可分配频率的第一预定范围内的频率的输出信号，该第二参考频率信号具有 在第二预定范围内的频率，并且从第二锁相环导出第二锁相环，用于响应于来自与给定的相关联的PROM的第一信号的组合，在第三预定范围内产生第三参考频率信号 可分配频率和具有预定频率的第四频率参考信号; 耦合到PROM的分频器，用于将来自第二锁相环的输出信号的频率除以由与所述给定可分配频率相关联的PROM的第二信号指示的量，以将第二参考信号提供给第一相位 锁定环。 锁相环各自包括最小化相位噪声和由于麦克风引起的电子噪声。