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图1所示电路用于补充“设计实例(Design Idea)”栏目以前的一篇文章渗考文献1)。图中的调制器使用了一个移相网络,把一个低频的(声频)信号分成同相和90°相差(正交)的两个分量。这里的移相网络比其他移相电路优越之处在于,它产生的移相误
The circuit shown in Figure 1 is used to supplement the previous article “Design Idea” in Perforated Literature 1). The modulator in the figure uses a phase-shifting network that divides a low frequency (audio) signal into two components that are out of phase (in quadrature) with 90 ° in phase. The phase-shifting network here is superior to other phase-shifting circuits in that it produces phase-shifting errors