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混频、振幅调制与解调电路是非线性电子线路的基本部分,属于频率变换电路中的频谱搬移电路,它们都能把输入信号的频谱进行无失真的搬移,掌握它们的共性,对进一步理解这部分内容及其应用很有帮助.所谓无失真的频谱搬移乃理想情况,实际电路会有失真,现就这两方面进行讨论.
Mixing, amplitude modulation and demodulation circuits are essential parts of non-linear electronic circuits and belong to the spectrum shift circuit in the frequency conversion circuit. All of them can carry out the distortionless transmission of the frequency spectrum of the input signal and grasp their commonality. For further understanding of this Part of the content and its application is very helpful so-called distortion-free spectrum shift is the ideal situation, the actual circuit will be distorted, are discussed in these two areas.