The decrease of the drain-source voltage or bus voltage affects the entire spectrum evenly according to Fourier theory. It means that the spectrum will decrease with the drain-source voltage.

• 降低漏源极直流母线电压影响干扰信号按傅立叶展开式的全部频带。这意味着干扰频谱幅值随漏源极电压的降低而降低。