Detector for indicating frequency deviation peaks
    1.
    发明授权
    Detector for indicating frequency deviation peaks 失效
    用于指示频率偏差峰值的检测器

    公开(公告)号:US4653116A

    公开(公告)日:1987-03-24

    申请号:US693800

    申请日:1985-01-23

    IPC分类号: H03D3/00 H04B1/10 H04B17/00

    CPC分类号: H04B1/1027 H03D3/00

    摘要: A detector for indicating reception disturbances during ultrashort wave broadcast reception by demodulating of intermediate frequency signals has a frequency modulated demodulator with a demodulation characteristic line formed so that a controlling region within which the output signal increases with increasing frequency deviation from a carrier frequency extends advantageously over the entire band width of the ultrashort wave intermediate frequency channel and is significantly greater than the maximum frequency deviation of the intermediate frequency carrier modulated with the basic band signal in the frequency, and the output signal of the frequency demodulator is supplied to an evaluating circuit at whose output the exceeding of a predetermined frequency disturbance deviation threshold is indicated by a logic signal.

    摘要翻译: 用于通过解调中频信号来指示在超短波广播接收期间的接收干扰的检测器具有频率调制解调器,其具有形成的解调特性线,使得其中输出信号随着与载波频率偏差的增加而增加的控制区域有利地超过 超短波中频通道的整个带宽,并且明显大于用频率中的基本频带信号调制的中频载波的最大频率偏差,并且频率解调器的输出信号被提供给评估电路 其输出超过预定频率干扰偏差阈值由逻辑信号指示。

    Antenna diversity reception system for eliminating reception
interferences
    2.
    发明授权
    Antenna diversity reception system for eliminating reception interferences 失效
    用于消除接收干扰的天线分集接收系统

    公开(公告)号:US4752968A

    公开(公告)日:1988-06-21

    申请号:US861205

    申请日:1986-05-08

    CPC分类号: H04B7/0874 H04B7/0848

    摘要: An antenna diversity system for the mobile reception of frequency-modulated oscillations having a receiver, antennae and a diversity processor. An optimum system according to the invention includes an FM tuner with intermediate frequency part (2) and at least two antennae, while the diversity processor (3) receives an intermediate frequency signal or high-frequency signal, which corresponds to a given linear combination derived from the antenna signals. The diversity processor (3) further includes an FM demodulator (32) with a succeeding frequency sweep threshold detector (31) and a device by which, in dependence upon the occurrence of an interference-dependent frequency sweep pulse exceeding the frequency sweep threshold of the frequency sweep threshold detector (31) in the intermediate frequency of high-frequency signal, another linear combination derived from the antenna signals is supplied to the input side of the tuner with intermediate frequency part (2).

    摘要翻译: 一种用于移动接收具有接收机,天线和分集处理器的调频振荡的天线分集系统。 根据本发明的最佳系统包括具有中频部分(2)和至少两个天线的FM调谐器,而分集处理器(3)接收对应于给定的线性组合的中频信号或高频信号 从天线信号。 分集处理器(3)还包括具有后续频率扫描阈值检测器(31)的FM解调器(32)和根据超过频率扫描阈值检测器的频率扫描阈值的干扰相关频率扫描脉冲的出现的装置 在高频信号的中频中的频率扫描阈值检测器(31),从天线信号导出的另一线性组合被提供给具有中频部分(2)的调谐器的输入侧。

    Detector for indicating reception disturbances during ultrashort wave
broadcast reception
    3.
    发明授权
    Detector for indicating reception disturbances during ultrashort wave broadcast reception 失效
    用于在超短波广播接收期间指示接收干扰的检测器

    公开(公告)号:US4777659A

    公开(公告)日:1988-10-11

    申请号:US9115

    申请日:1987-01-28

    IPC分类号: H04B1/10

    CPC分类号: H04B1/10

    摘要: A detector for indicating reception disturbances during frequency modulated ultrashort wave broadcast reception, particularly in power vehicles, has a detector for indicating frequency disturbance deviations in high frequency or intermediate frequency carriers and an amplitude modulation detector for indicating disturbance amplitude modulation in the high frequency or intermediate frequency carrier, and an evaluating circuit with two inputs arranged so that the output signals of the detectors are supplied to the respective inputs of the evaluating circuit and an output signal of the evaluating circuit depends both on the disturbance amplitude modulation and the frequency disturbance deviation.

    摘要翻译: 用于指示频率调制的超短波广播接收期间的接收干扰的检测器,特别是在动力车辆中,具有用于指示高频或中频载波中的频率干扰偏差的检测器和用于指示高频或中间的干扰幅度调制的幅度调制检测器 频率载波和具有两个输入的评估电路,其布置成使得检测器的输出信号被提供给评估电路的相应输入,并且评估电路的输出信号都取决于干扰幅度调制和频率干扰偏差。