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来源：百度知道 编辑：UC知道 时间：2024/06/24 05:47:25
The higher the reference frequency the faster may be the loop, but the speed of the phase-locked synthesizer can only approach that achievable with other types when its bandwidth is wide enough to make control of the phase shift in components, such as operational amplifiers, difficult, and only if the switching time is measured to a point where final frequency has not been too closely approached(i.e., a few time constants).

较高的参考频率快可循环，但速度锁相环频率合成只能办法，实现与其他类型时，其带宽足够宽，使控制的相移元件，如运算放大器，困难，只有在切换时间是衡量一个地方最终频率还没有过于密切接触（即，有几个时间常数） 。